How Much Caffeine Is in a Cup of Decaffeinated Coffee

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Here’s the truth that might surprise you: decaf does not mean caffeine-free. It’s a bit like calling a movie “silent” when it still has a faint hum. The U.S. government, in its infinite wisdom, allows coffee to be labeled “decaffeinated” if at least 97% of the original caffeine is removed.

So, what does that mean for your mug? A standard 8-ounce cup of decaf usually contains between 2 and 15 milligrams of caffeine. Compare that to a regular cup, which can pack 95 to 200 milligrams. It’s a tiny amount, but it’s not nothing.

What That Feels Like (Spoiler: Not Much)

For most people, 2 to 15 milligrams is barely a whisper. It’s about the same as a single square of dark chocolate—or a few sips of green tea. Have you ever felt a jolt from a chocolate chip cookie? Probably not.

But here’s the cool part: if you’re super sensitive to caffeine—like, the kind of person who gets a buzz from a breath mint—this little amount can keep you wired. It’s all about your personal biochemistry. Weird, right?