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The Amazon Kindle has revolutionized how we read books. The newest Kindle Paperwhite is 7.23 ounces and 6.9” x 4.9” and can carry around thousands of books. It hosts all sorts of features like screen reading, highlighting text and adjusting margins – all for a relatively reasonable price.
But if you’re concerned about blue light – how it affects your sleep, circadian rhythms, eye strain and more, you might wonder, does Kindle emit blue light?
Yes, all the current Kindle models do emit blue light.
Every one of them offer brightness adjustment powered by LED lights. LED lights emit blue light.
Read about the specific models below and how you can mitigate the effects of blue light.
Jump straight to the Kindle model:
Does Kindle Emit Blue Light?
Does Kindle Paperwhite Emit Blue Light?
Does Kindle Oasis Emit Blue Light?
Does Kindle Kids Emit Blue Light?
Does Kindle Paperwhite Kids Emit Blue Light?
What is Blue Light and Why Should I Be Concerned?
Blue light has really come into popular culture in the last decade as smart phones, and yes, e-readers, have burst onto the scene. But you might not know exactly what it is and why you should be concerned about it.
Blue light is part of the visible light spectrum, meaning, what the eye can see.
According to the University of California, Davis Eye Health and Vision Science:
“Vibrating within the 380 to 500 nanometer range, it has the shortest wavelength and highest energy. About one-third of all visible light is considered high-energy visible, or “blue,” light. Sunlight is the most significant source of blue light. Artificial sources of blue light include fluorescent light, compact fluorescent light (CFL) bulbs, LEDs, flat screen LED televisions, computer monitors, smart phones and tablet screens.”
Blue light is very important to our health at the right times of the day.
Our bodies are on a 24 hour cycle. Natural processes respond to light and dark and as we know, humans typically sleep at night and are awake during the day.
Circadian rhythms are important for things like hormone release, body temperature, eating and digestion, among other things.
It’s probably not surprising that artificial light from electronic devices can impact our circadian rhythm. It does this by suppressing melatonin release.
Blue light is a particular significant culprit for this.
According to an article from Harvard Health:
“While light of any kind can suppress the secretion of melatonin, blue light at night does so more powerfully. “
Macular degeneration and blue light
During my research for this article, I was surprised to find some people creating a link between blue light from devices like Kindle and macular degeneration.
This appears to be a little disingenuous.
Although blue light from sunlight, if direct, can cause damage to the eye, blue light from devices like phones and Kindles are nowhere near the same with respect to damaging the tissue of the eye.
Now that we have an understanding of what blue light is and how it can impact circadian rhythms and the health impact of that, let’s dig deeper on whether Kindles emit blue light.
This is likely of particular interest to someone who enjoys reading before bed – as I do!
Does Kindle Emit Blue Light?
Here’s the Kindle we’re referring to in this section.
The current 10th generation Kindle released in 2019 added a front light for “anytime reading.”
You can adjust this light and it uses 4 LED lights on the bottom to project light upwards.
Here’s what it looks like to adjust the light on this Kindle model:
So the question now becomes, do LED lights emit blue light?
Yes, LED lights to emit blue light.
A Harvard medical school article notes: “LED lights are more efficient than fluorescent lights, but they also produce a fair amount of light in the blue spectrum.”
Interestingly, it’s not clear in the Kindle User Guide around the use of LED lights for the backlight technology and only addresses the electronic paper technology:
“Your Kindle uses a high-resolution display technology called electronic paper. The display is reflective, which means you can read it clearly even in bright sunlight. Electronic paper uses ink just like books and newspapers, but it displays the ink particles electronically.”
So you can’t simply go to the user guide to figure out that the Kindle does emit blue light but you need to do a little research.
We now know that this model added backlighting, powered by 4 LED lights and LED lights do emit a good amount of blue light.
It’s roundabout but we are able to figure this out – yes, Kindle does emit blue light.
What about the newest Kindle e-reader – the Paperwhite?
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Does Kindle Paperwhite Have Blue Light?
Here is the Kindle Paperwhite this section refers to.
The most recent version is the 11th generation released in 2021. We will be addressing both the Standard and Signature Edition Kindle Paperwhite and whether they emit blue light.
As we know, the user guide unfortunately doesn’t come out and address whether the device emits blue light or night.
Upon doing further research, we can find the Kindle Paperwhite has 17(!) LED lights fueling the backlighting capabilities.
All those LED lights mean the screen is capable of both blue light and warm light.
Although warm light makes it easier to read in low-light conditions and/or nighttime, we know that LED lights emit blue light.
So, yes, Kindle Paperwhite does emit blue light.
Does Kindle Oasis Have Blue Light?
Here’s the Kindle Oasis this section is referring to.
As of the writing of this article, the Kindle Oasis was last updated in 2019 and is on the 10th generation.
I already know the user guide will not be helpful in my quest to find out of the Kindle Oasis emits blue light.
Instead I’ll take my research in the direction of whether it has backlighting. That’s the key.
We see in this video demo that you can adjust the brightness:
So the question is now, what technology is used to add the brightness option. Turns out, unsurprisingly, the Kindle Oasis also uses LED lights to illuminate the screen.
This model boasts 25 LED lights in total – 12 white and 13 amber.
That’s even more LED lights than the 2021 Kindle Paperwhite!
And as we have established, LED lights emit blue light so we know, yes, Kindle Oasis does emit blue light.
Does Kindle Kids Emit Blue Light?
Here’s the Kindle Kids edition this section speaks to.
If your kids read as much as my daughter does, this is a question that might concern you. Particularly if your kids are in the habit of reading before bed.
So far, each Kindle model we’ve reviewed does emit blue light, does this hold true for the Kindle Kids model?
Turns out, the Kindle Kids edition features the same front light that Amazon added to the normal Kindle in the 2019 edition, which means it employs the use of LED lights.
Yes, the Kindle Kids edition does emit blue light.
Does Kindle Paperwhite Kids Emit Blue Light?
Here’s the Kindle Paperwhite Kids edition this part of the article is referring to.
Never one to miss an opportunity, Amazon also carries a Kindle Paperwhite Kids edition.
The Kids edition of the Kindle Paperwhite is very similar to the regular Kindle Paperwhite and this includes the use of 17 LED lights to backlight the screen.
Yes, the Kindle Paperwhite Kids edition emits blue light.
How Do I Stop the Blue Light on my Kindle?
Since we know all the current Kindle models use LED lights for backlighting, you cannot stop the blue light on your Kindle.
But you can reduce the light.
Here’s how you turn down the brightness on the different Kindle models.
Adjust the Brightness Down – Kindle
Adjust brightness by swiping down from the top of the screen, or tap the caret in the center of the screen to access screen light controls.
From here you can drag your finger along the slider down, to the left to reduce the brightness. You can also tap anywhere on the slider to select a specific setting. Alternatively, you can use the +/- and tap the – to turn down the brightness on the Kindle.
Adjust the Brightness Down – Kindle Paperwhite
Similar to the Kindle edition, with Kindle Paperwhite you adjust the brightness by accessing the Quick Actions or from the settings menu. Again, you have the option of dragging your finger along the slider down, to the left to reduce the brightness. You can also tap anywhere on the slider to select a specific setting. Alternatively, you can use the +/- and tap the – to turn down the brightness on the Kindle.
The Paperwhite also has warmth settings that you can adjust up or down. As we know, the Paperwhite has 17 LED lights, which is why warmth is an option with this edition.
Similar to brightness, adjust warmth by dragging your finger along the slider until you reach the desired setting, tapping anywhere in the range or using the +/-.
Adjust the Brightness Down – Kindle Oasis
The Kindle Oasis brightness and warmth adjustment works the same as the Kindle Paperwhite. Remember the Kindle Oasis has 25 LED lights so brightness and warmth are both options to adjust.
Adjust the brightness by accessing the Quick Actions or from the settings menu. Again, you have the option of dragging your finger along the slider down, to the left to reduce the brightness. You can also tap anywhere on the slider to select a specific setting. Alternatively, you can use the +/- and tap the – to turn down the brightness on the Kindle.
The instructions work the same for warmth.
Adjust the Brightness Down – Kindle Kids
From a technology perspective, Kindle Kids is in line with the 2019, 10th generation Kindle and adjusting the brightness works the same way.
Adjust the Brightness Down – Kindle Paperwhite Kids
Similarly, from a technology perspective, Kindle Paperwhite Kids is in line with the 2021 Kindle Paperwhite and the instructions as the same as outlined above for that device.
For your reference, here’s a link to all the Amazon Kindle user manuals.
Is It Okay to Read Kindle Before Bed?
Of course you can choose to read Kindle before bed.
However, if you’re concerned about blue light from the LED lights in your Kindle, you might want to put it aside at night.
I find that I am particularly sensitive to blue light of any kind before bed and believe it does impact my sleep. So I use my Kindle during the day when the time is right for blue light.
Does Reading Kindle Paperwhite Affect Sleep?
That’s hard to say. Although I won’t say directly that reading Kindle Paperwhite does affect sleep, what I can say is blue light has been shown to affect circadian rhythms.
The current lineup of Kindles all use LED lights for backlighting. LED lights to emit blue light.
If you’re concerned about blue light and how it affects your sleep, you might want to consider not reading from the Kindle Paperwhite before going to bed.
Does Kindle Have a Blue Light Filter?
No, Kindle does not have a blue light filter.
What Can I Do to Reduce Blue Light?
The obvious way to reduce blue light is to reduce exposure to blue wavelengths, especially after dark. Of course, this isn’t always practical or desirable.
A number of companies have come into this space with blue light blocking glasses.
These glasses work by using tinting on the glasses to let in more red and green light and less blue light.
The real question is, do these glasses work?
In that same article from Harvard Health referenced above, they cite a study:
“In another study of blue light, researchers at the University of Toronto compared the melatonin levels of people exposed to bright indoor light who were wearing blue-light–blocking goggles to people exposed to regular dim light without wearing goggles. The fact that the levels of the hormone were about the same in the two groups strengthens the hypothesis that blue light is a potent suppressor of melatonin. It also suggests that shift workers and night owls could perhaps protect themselves if they wore eyewear that blocks blue light. Inexpensive sunglasses with orange-tinted lenses block blue light, but they also block other colors, so they’re not suitable for use indoors at night.“
Defendershield is a leader in the EMF radiation blocking space has a number of good options, including some that can fit over reading glasses.
Hopefully this article helps clear up the questions around Kindle Paperwhite blue light and all the other models.
It’s ultimately up to you to decide if kindle bluelight is worth investigating further, considering some blue light blocking glasses or moving to day-time use only.
But I hope I’ve provided you with valuable information moving forward.
Other articles you might like:
Do Cell Phones Emit Radiation in Airplane Mode?
Should You Turn Off Wifi at Night for Your Health? 5 Things You NEED to Know!
EMF Protection for Your Home – Ultimate Guide
Does Kindle Paperwhite give off blue light? ›
Does kindle have blue light? Like most handheld devices and laptops, Kindle does use blue light for backlighting. But the kindle blue light is no more damaging than your average cell phone. In fact, Kindle Paperwhite actually emits a little less blue light compared to other models.Do Kindle readers emit blue light? ›
If you like to read on your Kindle at bedtime, use the Warm Light feature to cut down on the hard blue light. If your Kindle doesn't support the feature, you can use dark mode to reduce eye strain at night.What is the difference between Kindle Paperwhite and kids? ›
The Kindle Paperwhite Kids is the same exact product as the Kindle Paperwhite, but it's pre-set with certain software functions like parental controls. To turn your Kindle Paperwhite Kids into a normal Kindle Paperwhite, just go into Settings, then Device Options on the device and turn off parental controls.What are the benefits of Kindle Paperwhite Kids? ›
The Paperwhite has an adjustable warm light and more LEDs (the Kindle Kids does have a front light for reading in low light.) The Paperwhite kids has 8GB storage while the Kindle Kids has 16GB (yes the cheaper device has more storage.)Which Kindle has the least amount of blue light? ›
Like most handheld devices and laptops, Kindle does use blue light for backlighting. But the kindle blue light is no more damaging than your average cell phone. In fact, Kindle Paperwhite actually emits a little less blue light compared to other models.Which Kindle does not affect sleep? ›
Kindles and Nooks that lack a built-in light cannot adjust the screen, but because the device's e-ink displays have lower contrast, these e-readers are less disruptive to sleep. However, Kindle Paperwhites and Nook with GlowLight should be dimmed as much as possible.Which Kindle is best for sleep? ›
Speaking of screens, Kindle Paperwhite is a great option for bedtime reading, emitting less blue light than other screens. It's wafer thin, lightweight, and waterproof (in case your waterbed from the '80s goes "pop!" in the middle of the night).Does Kindle Paperwhite affect sleep? ›
This feature not only lets you easily use your Kindle in the dark, but also makes sure that you are not disrupting your circadian rhythm if reading before bed; melatonin will still be produced by your body the way it should, and your sleep will not be affected.Are Kindles better for your eyes than a phone? ›
Are e-readers better for your eyes? When compared to the screens of our laptops, smartphones and tablets, e-readers are better for our eyes. E-readers like the Amazon Kindle use e-ink, which is a type of paper display technology that mimics ink on a page.Can you stop your kid purchasing books on a Kindle Paperwhite? ›
Add a Child Profile to Your Amazon Household Account
You can use this feature on any Kindle, including the regular Kindle Paperwhite. If you have an Amazon Household account, you can add a child profile to it. This will give you access to parental controls that you can use to manage your child's Kindle experience.
Is Kindle Paperwhite good for elderly? ›
The Kindle Oasis is one of the best e-readers for older users thanks to its adaptive lighting options and physical buttons for turning pages. Meanwhile, the Kindle Paperwhite is better for older users on a budget, coming with some of the key features of the Oasis yet without the same price tag.How do I make my Kindle Paperwhite kid friendly? ›
- From the Home screen, select the Menu icon.
- Select Amazon Kids.
- Select Add New Profile or Add Child Profile.
- Enter your parental controls pin code, if needed, then the child's name and birthday.
The base Amazon Kids is free, but unlimited access to the selection of child-friendly and educational content on Amazon Kids+ costs $4.99 per month, or $2.99 per month for Prime members. Kindle Kids e-reader models come with one year of Amazon Kids+ free. How Do I Access Amazon Kids?Do you have to pay for Kindle Kids? ›
Amazon Kids+ is a paid subscription service that gives unlimited access to a slew of content specifically made for children, including books, videos, apps, audiobooks, and educational material, and is sorted by three age groups: 3-5, 6-8 and 9-12.Does Kindle Kids have Internet? ›
Do all Amazon Kids (formerly Fire for Kids) users have access to the web? Yes, the "Hand-Selected Websites & Videos" option of the web browser is automatically turned on for all child profiles.Is Kindle better for eyes than iPad? ›
Budget Friendly: Kindle is inexpensive in comparison to iPad. Long Battery Life: Kindle can run for weeks once fully charged. Eye Protection: Kindle does not emit light from its screen as it is based on e-ink technology. Hence, your eyes won't strain even when you read ebooks for hours.How to read without blue light? ›
Use smart lights
Our gadgets aren't the only devices that emit blue light. The normal lightbulbs in our lamps do, too. One way to rectify this–and enable you to read that book with a safe amount of light–is to use warm-colored lightbulbs in your lamps at night.
Best answer: No. The Amazon Kindle Paperwhite doesn't emit a significant amount of blue light as its LEDs direct the light toward the page rather than your eyes. However, there are ways to adjust the lighting to suit your preferences and comfort, including a simple stick-on filter or pair of specialty glasses.Does Kindle ruin sleep? ›
In a 2015 study, researchers found that the use of e-readers before bedtime prolongs the time it takes to fall asleep and reduces alertness the following morning. Wearing blue-light-blocking glasses while reading might help diminish any negative impact the blue light has on your sleep.Should I turn off my Kindle at night? ›
Unless you are subscribed to periodicals that you want to receive overnight, we recommend turning wireless off (Press the Menu button and select “Turn Wireless Off” of the menu options) before leaving the device in sleep mode. This will further conserve battery power.
Which Kindle has the least radiation? ›
The Amazon Kindle paper-white or Kindle e-reader both emit much less radiation, to the point that it really isn't anything to be concerned with unless you're holding it against your head for some reason.Is it worth getting a Kindle Oasis? ›
The Kindle Oasis is the best choice for those who use their Kindle every day. Yes, it's expensive, but it's a genuine pleasure to use and it's the Kindle to buy if you want the very best of the best.Should you read on your bed? ›
Overall, reading a book in bed before going to sleep improved sleep quality. In the intervention group (reading a book in bed), 42% (156 people) felt their sleep quality improved compared to 28% (112 people) in the comparator group (not reading a book in bed), a difference of 14% favouring the intervention group.Is Kindle Oasis better for your eyes? ›
A: Yes, the Kindle Oasis is good for the eyes. Its e-ink screen reduces glare and allows for crisp text. It also has an adjustable backlight, which can be set to a warmer color to reduce blue light and eye strain.Does blue light actually affect sleep? ›
Inversely, exposure to blue light in the hours leading up to bedtime can hinder sleep. Blue light suppresses the body's release of melatonin. View Source , a hormone that makes us feel drowsy. While this promotes wakefulness during the day, it becomes unhelpful at night when we are trying to sleep.Does blue light affect sleep? ›
Blue light has the strongest impact. Exposure to blue light (and white light, which contains blue light) during the sensitive period can make it difficult for you to fall asleep and stay asleep. Exposure to white light during the day can have positive effects, including boosting alertness and mood.Can you read a Kindle Paperwhite in the dark? ›
The Amazon Kindle Paperwhite and the Kindle Oasis has a feature called Dark Mode. This is a system that inverts the text and background, so the background would be black and text is white. This makes reading on the Kindle easier at night, so you won't disturb others.Is it better to read on book or Kindle for your eyes? ›
There really isn't that much difference in terms of eyesight health! The new screens that are being used on E-readers are so improved from earlier versions that our eyes can't detect their movements. So the real issue is the same as reading a paper book.Why is my vision blurry after reading Kindle? ›
Excessive exposure to the blue light emitted from these devices is causing some people to develop a condition called digital eye strain (also called computer vision syndrome). This causes pain, dryness, fatigue, and blurred vision in the eyes.Is It Bad For Your eyes To read On A Kindle in the Dark? ›
Using a phone, iPad, Kindle, or other electronic devices might seem like a great way to read in the dark. After all, the light is built right in. But reading on a digital device in the dark can cause eye strain too. Looking at a bright screen in dim light is difficult work for your eyes.
Do you keep books forever you buy on Kindle? ›
Any books you've paid for are yours forever. You can also borrow Prime books if you have Amazon Prime. Helpful?Can you put your own books on a Kindle Paperwhite? ›
Attach the file to an email, send it to your Kindle's email address (with any subject, and nothing in the body of the email), and it should appear on your Kindle shortly. You can also drag and drop the file onto your Kindle if you attach the device to your PC with a USB cable.What is the lifespan of a Kindle Paperwhite? ›
Recent Kindle device models have a lifespan of 5 – 8 years, provided you proper care of the device. Kindle Fire tablets last for about 2 – 3 years, which is a shorter life span compared to the e-ink versions.Why are old books free on Kindle? ›
Many self-published authors and small publishers give away their books as a promotional tool, for example an older book might be released for free to promote a new book from the same author and they hope you'll enjoy your free one so much you will go on to purchase other books, or tell your friends, or even just give ...Does Kindle Paperwhite Kids have audio? ›
With Audible, Kindle Paperwhite Kids lets your child switch seamlessly between reading and listening via Bluetooth-enabled speakers or headphones.Does Kindle Paperwhite Kids play audiobooks? ›
They won't have access to the books from Kindle Unlimited that you're reading on your own (unless you choose to share them). Can you listen to audiobooks on a Kindle? Yes, but you'll need bluetooth enabled headphones to do so!Does Amazon Kids+ work offline? ›
Amazon Kids+ Content
Content will appear in your child's profile when you connect your device to a wireless network. You can download this content for offline use on Amazon Devices. On Android, iOS and Amazon Glow devices, you need an internet connection to use the content.
It's a potent package for parents who want to encourage their kids to read. That said, the Kindle Paperwhite also comes in a model for Kids for $159.99, and it has a fully waterproof build that should hold up better to messy kids, making it our Editors' Choice winner.What does Kindle Kids include? ›
Or learn more about the Kindle Kids that includes one year of Amazon Kids+, a kid-friendly cover, and a 2-year worry-free guarantee. With Android mobile devices or tablets, kids get access to more than 10,000 popular videos, books, and educational content from kid's favourites like Disney, Nick, CBeebies, and more.Can you listen to audiobooks on kids Kindle? ›
On Kindle, kids can have unlimited access to thousands of books, and hundreds of audiobooks.
What age is Kindle Kids Unlimited? ›
Designed for kids ages 3-12 to safely learn, grow and explore.How much is a Kindle Kids Edition? ›
Editors' Note: There is a new version of the Amazon Kindle Kids available. Check out the Amazon Kindle Kids (2022 Release). Don't be fooled by the name: Amazon's Kindle Kids isn't just for children. It's a $109.99 bundle of hardware and services that makes sense for everyone.What happens if I cancel Amazon kids? ›
If you cancel the annual subscription after the initial billing cycle, you will immediately lose access to your Amazon Kids+ subscription and you will receive a pro-rated refund.Can Kindle be read without internet? ›
Reading on Kindle Does Not Require an Internet Connection
You can also add books without connecting to the internet by connecting and transferring books to your Kindle device via a computer.
Kindle Oasis – With 7” display and page turn buttons – Wi-Fi + Free Cellular Connectivity, 32 GB, Graphite.Does Kindle kids have apps? ›
Although there are thousands of books, apps, TV shows and movies within Amazon Kids+, each profile is customizable to add or remove content for a hand-crafted experience for each child.Is it OK to read Kindle Paperwhite before bed? ›
Studies show exposure to blue light can negatively impact sleep. In a 2015 study, researchers found that the use of e-readers before bedtime prolongs the time it takes to fall asleep and reduces alertness the following morning.Is there a night mode on Kindle Paperwhite? ›
The Amazon Kindle Paperwhite and the Kindle Oasis has a feature called Dark Mode. This is a system that inverts the text and background, so the background would be black and text is white. This makes reading on the Kindle easier at night, so you won't disturb others.Does Paperwhite have night mode? ›
If you have a Kindle device launched in 2017 or later, you'll be able to use Dark Mode. This includes the Kindle Oasis 2 and Kindle Paperwhite 10. Older Kindles do not support Dark Mode.Does Kindle need blue light filter? ›
Best answer: No. The Amazon Kindle Paperwhite doesn't emit a significant amount of blue light as its LEDs direct the light toward the page rather than your eyes. However, there are ways to adjust the lighting to suit your preferences and comfort, including a simple stick-on filter or pair of specialty glasses.
Are Kindles OK to read at night? ›
If you really want to read from a Kindle, iPad, or other tablet at night, there are a few things you can do to reduce any negative effects: Use a filter to reduce the amount of blue light emitted. You can reduce blue light on iPads with Night Shift, or use dark mode with a Kindle. Try blue light blocking glasses.Is Kindle Dark Mode better for your eyes? ›
Also, Dark mode emits less blue light, which reduces eye fatigue and blinking (dry eyes), especially in low light conditions.Is Dark Mode better for your eyes? ›
Dark mode is used to reduce blue light exposure. This helps with digital eye strain (computer vision syndrome) that may result from prolonged screen time.Which Kindle is best for reading in the dark? ›
Amazon Kindle Paperwhite (2021)
There's a front-lighting system so you can read in the dark, but you can also adjust the colour temperature of this, as you can in the Kindle Oasis (2019).
For a start, the Oasis has a bigger 7-inch screen, while the Paperwhite has a 6-inch display. But, most importantly in our book, only the Oasis allows you to filter out blue light at night if you want to, making nighttime reading a more pleasurable experience.Can you read Kindle Paperwhite in the sun? ›
The Kindle Paperwhite can easily be used in the bright sun. The screen is very similar to the texture and look of actual paper. There is also a backlight that can be used to read during the night or in a dark room.Does Kindle Paperwhite automatically adjust brightness? ›
You can also use the Auto Brightness feature, which allows the Kindle's adaptive front light to change brightness based on the ambient light. Available on the Kindle Paperwhite and Oasis models, you simply check the Auto Brightness box in the Quick Settings menu to enable the feature.Is Kindle Paperwhite bad for sleep? ›
The blue light that is produced from these types of devices can cause a strain to our eyes, give us headaches, and can damage our eyes over time. One of the most common negative aspects of blue light is how it can affect our sleep.Does blue light keep you awake? ›
Among the visible light spectrum, blue wavelengths have the most powerful effect on your sleep-wake internal body clock. Both natural and artificial blue light can boost your alertness and mental sharpness. But too much of it may keep you awake when your body needs to wind down. Block out light to get good sleep.