Yes, dark chocolate has caffeine. Per USDA FoodData Central, dark chocolate at 70-85% cacao contains 80mg of caffeine per 100g, dark chocolate at 45-59% cacao contains 43mg per 100g, milk chocolate contains 20mg per 100g, and white chocolate contains 0mg. In practical terms, a 1oz square of strong dark chocolate carries about 23mg of caffeine, roughly what you get from a few sips of drip coffee.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. How caffeine affects you depends on your own tolerance and health, so treat these numbers as information, not advice.
Why the cacao percentage is the whole story
Caffeine in chocolate comes from one place: cocoa solids. The more cacao in the bar, the more caffeine, which is why the USDA numbers climb in a straight line from milk chocolate to 85% dark. White chocolate is made from cocoa butter, sugar, and milk with no cocoa solids at all, and its USDA entry shows exactly 0mg of caffeine and 0mg of theobromine.
Theobromine is the number worth knowing if you want to sound smart behind the bar. It is cacao's primary stimulant, a milder cousin of caffeine, and it shows up at roughly ten times the caffeine level in every chocolate the USDA measures: 802mg per 100g in 70-85% dark, 493mg in 45-59% dark, and 205mg in milk chocolate. That gentle, longer buzz people report from dark chocolate is mostly theobromine doing the work, not caffeine.
For scale, the FDA puts a 12oz cup of brewed coffee at 113 to 247mg of caffeine. You would need to eat well over 100g of strong dark chocolate, an entire large bar or more, to match even the low end of one coffee. Nobody is getting wired off a mocha's chocolate. The espresso is doing that.
Caffeine in chocolate by type
All figures are from USDA FoodData Central (SR Legacy entries). The per-ounce column is the same data converted to a typical 1oz (28g) serving, about three squares of a standard bar.
| Chocolate type | Caffeine per 100g | Caffeine per 1oz (28g) | Theobromine per 100g |
|---|---|---|---|
| Dark, 70-85% cacao | 80mg | ~23mg | 802mg |
| Dark, 45-59% cacao | 43mg | ~12mg | 493mg |
| Milk chocolate | 20mg | ~6mg | 205mg |
| White chocolate | 0mg | 0mg | 0mg |
What about brand-name bars like Hershey's?
Hershey used to publish caffeine figures for its products, and while the numbers no longer appear on the company's site, Caffeine Informer preserves Hershey's published data. A 1.5oz Hershey's Milk Chocolate bar has 9mg of caffeine, which lines up almost exactly with the USDA milk chocolate figure for that weight. A 1.45oz Special Dark bar has 20mg. Nine Kisses run 10mg, a tablespoon of Hershey's Cocoa has 8mg, and two tablespoons of chocolate syrup have 5mg. Hershey may have adjusted formulations since it stopped publishing these, so treat the brand figures as close estimates and the USDA numbers as the reliable baseline.
The syrup number matters for cafe work. If a customer asks whether their mocha has more caffeine than a latte, the honest answer is barely: a standard pump or two of chocolate sauce adds single-digit milligrams next to the 60-75mg in each espresso shot. Hot chocolate made from actual cocoa is the drink where chocolate's caffeine becomes the entire caffeine content.
One more note for the decaf-at-4pm crowd: a couple squares of milk chocolate for dessert is 3 to 6mg of caffeine, which is less than most cups of decaf coffee. A few squares of 85% dark before bed is a different story at 20mg or more, plus the theobromine on top.
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Related reading
- The Barista Life caffeine database: every drink and chain we have measured, in one place
- Yerba mate caffeine content: another plant where the buzz comes from more than just caffeine
- Pumpkin spice latte caffeine: what flavored espresso drinks actually deliver
FAQ
Does dark chocolate have caffeine? Yes. USDA data shows 80mg per 100g for 70-85% cacao dark chocolate and 43mg per 100g for 45-59% cacao. A typical 1oz serving of strong dark chocolate has about 23mg.
Does white chocolate have caffeine? No. White chocolate contains cocoa butter but no cocoa solids, and the USDA entry lists 0mg of caffeine and 0mg of theobromine per 100g.
Can chocolate keep you awake at night? A few squares of milk chocolate deliver under 6mg of caffeine, less than decaf coffee. High-percentage dark chocolate is stronger, around 23mg per ounce plus theobromine, so a large serving late in the evening could matter if you are sensitive to stimulants.