Skip to main content

Does decaf coffee keep you awake? What you need to know before bed

How decaf coffee affects your alertness

roasted coffee beans
ธันยกร ไกรสร / Pexels

Do you drink coffee because of its flavor or for the energy boost? If you love to sip on a delicious cup of fresh coffee for the taste alone, decaf coffee is the best option for drinking all day, anytime (it’s quickly becoming an integral part of my daily routine). Decaf coffee is also one of the greatest inventions for coffee drinkers who are highly sensitive to the effects of caffeine. Coffee drinkers experience a win-win” with decaf coffee, packed with all the flavor but free of caffeine. But is decaf coffee truly decaffeinated? Does decaf coffee keep you awake? I’ll help you explore the caffeine content in decaf coffee and how it can impact your sleep.

Does decaf coffee keep you awake?

Coffee with cream on side
Raduz / Pexels

According to James from Decadent Decaf Coffee Company, decaffeinated coffee will not keep you awake. Although decaffeinated coffee is not 100% caffeine-free, the caffeine that remains is minimal and unlikely to affect your ability to sleep. For example, decaffeinated coffee using the Swiss Water decaf process removes 99.9% of the caffeine from coffee beans. This method removes the most possible caffeine out of any of the decaf coffee methods. However, according to Swiss Water Decaf, several variables can affect how much caffeine remains in a cup of coffee after undergoing the Swiss Water decaf process. Regardless, the average cup of decaf coffee still only contains about 2 milligrams of caffeine.

Recommended Videos

Other decaffination methods, such as those that use chemical solvents like Methylene Chloride or Ethyl Acetate, remove up to 97% of caffeine from coffee beans. Like with Swiss Water Decaf, varying methods can alter exact caffeine levels slightly. Still, the average decaf cup will only contain 2 to 15 milligrams of caffeine per cup.

Regardless of the decaffeination method used, James said the amount of caffeine in both decaf coffees is negligible. With this in mind, you’d potentially have to drink a pretty hefty amount of decaf coffee before bed to keep you awake. Highly sensitive individuals could be slightly impacted, though it’s unlikely to occur after drinking just one cup of decaf coffee. Although decaf coffee probably won’t keep you awake, consuming too much liquid before could impact your sleep. If you drink decaf before bed, be mindful to consume it with enough time before lying down to avoid excessive bathroom trips.

Psychosomatic effects

In most cases, the answer to “Does decaf coffee keep you awake?” is no. Yet, some decaf coffee drinkers swear their decaf cup of joe keeps them awake at night. James refers to this as a psychosomatic effect of drinking decaf coffee. For those people, he said, it’s probably more important to look at your sleeping routine and behavior before bed, such as not using electronics in the bedroom and paying close attention to the light sources in your bedroom. Many people who struggle to fall asleep at night may believe decaf coffee is playing a role in keeping them awake, but there’s a higher-than-likely chance their alertness is due to other poor sleep hygiene habits.

Why do people drink decaf coffee at night?

Cup of coffee
Karolina Grabowska / Pixabay

Drinking decaf coffee at night is one of my favorite post-dinner rituals. Often paired with dessert, coffee at night allows many to enjoy its flavor without experiencing the effects of caffeine. If you want a coffee and look at the time and it’s past 5 p.m., it’s probably best to choose decaf over regular coffee. Most experts recommend cutting off your caffeine intake at least five to six hours before bedtime to avoid potential sleep disruptions.

On average, an 8-ounce cup of regular coffee contains about 95 milligrams of caffeine, which increases alertness and makes it more difficult to fall asleep and stay asleep. Even for those with a high caffeine intolerance, drinking regular coffee too close to bed can impact your sleep quality without you realizing it. Options such as half-caff coffee still contain 40 to 50 mg of caffeine per serving, which is still enough caffeine to keep you awake.

As a long-time coffee drinker, I understand many coffee drinkers’ hesitation surrounding decaf coffee. In the past, decaf coffee has gotten a bit of a bad rep for having a “weakened” flavor compared to regular coffee. For this reason, I love drinking decaf coffee that has been decaffeinated using the Swiss Water method. I find the flavor of this type of decaf coffee is just as bold and flavorful as the real thing. Since the decaf coffee trend has emerged, there are now even more decaffeinated coffee options on the market than before. Want cold brew before bed? Options like STOK decaf cold brew are great for a nightcap, as are decaf cold brew concentrates.

Emily Caldwell
Emily is a freelance journalist with a focus on food, beverage, health, fitness, and travel content. She loves to travel to…
How to clean a coffee grinder for a fresher, better-tasting brew
What to know about keeping your coffee tools clean
Coffee bean grinder machine

Though we all want to brew delicious coffee at home, most aren't thrilled about cleaning our coffee gear. Even remembering to run regular cleaning cycles on my coffee maker seems inconvenient. While it's not the most thrilling of tasks, keeping your coffee tools clean is non-negotiable for enjoying a fresh-tasting cup of coffee.

Your coffee grinder plays a critical role in your coffee bar, but when did you last clean it? If you can't answer, this guide is for you. I've put together a guide of what you need to know about how to clean a coffee grinder, an essential coffee tool most of us forget to clean.
Why cleaning your coffee grinder matters

Read more
Free Rein Coffee debuts first-ever decaf roast: Spurless
New decaf blend designed for dark-roast coffee drinkers
Free Rein Spurless

Today, Free Rein Coffee Company debuted its first-ever decaf roast coffee, Spurless Decaf Roast. This 100% Arabica decaf roast is bold and rich, and drinks just like regular coffee. Free Rein Coffee is redefining decaf with this bold new release: Spurless. Crafted for those who love the ritual of coffee but prefer it without the caffeine, this rich, full-bodied dark roast features smooth milk chocolate notes and a robust finish. Using the same commitment to quality and craftsmanship that defines every Free Rein blend, Spurless proves that going decaf doesn’t mean sacrificing flavor.

The new Spurless decaf is all-natural, water-processed, and roasted in the USA. Available in bags or pods, coffee drinkers using any type of coffee maker can now enjoy this exciting new decaf roast.

Read more
What’s most surprising about Starbucks’ new secret Iced Lavender Oatmilk Latte
How (and why you should) order this variation
Starbucks Iced Lavender Oatmilk Latte

If you follow Starbucks on social media, you might've caught the brand's post yesterday about how to order a new (secret) variation of the traditional Iced Lavender Oatmilk Latte. I'll admit, I've never tried lavender coffee, nor did I have a deep urge to do so until I saw the Instagram post. I'm unsure if the bright purple for springtime or the curiosity around lavender coffee intrigued me to order this. Regardless, I'm glad I tried this drink because it doesn't taste anything like I thought it would. From the looks of this drink, I expected it to be super sweet and overpowering. Yet, after one sip, it's safe to say I'm hooked on the taste of lavender in coffee. The drink is light, smooth, and sweet enough without tasting like a whole dessert.

The Instagram post starts by ordering a Grande Iced Lavender Oatmilk Latte. When ordered right off the menu, this drink is crafted with Starbucks blonde espresso roast, creamy oatmilk, ice, and infused with sweet and subtle floral notes of lavender. Despite heading to Starbucks several times over the last month, I'm ashamed to admit I've never tried this springtime favorite beverage.

Read more