brewed coffee wins on total caffeine per serving (95mg per 8 oz cup, against 22.7mg for dark chocolate (70 to 85% cacao) and 5.7mg for milk chocolate), but ounce for ounce dark chocolate (70 to 85% cacao) is the strongest of the three at about 22.7mg per fluid ounce. The three servings are different sizes, so the ranking flips depending on which number you mean.
dark chocolate (70 to 85% cacao) vs milk chocolate vs brewed coffee: the numbers
| dark chocolate (70 to 85% cacao) | milk chocolate | brewed coffee | |
|---|---|---|---|
| Caffeine per serving | 22.7mg per 1 oz (28.35g) square | 5.7mg per 1 oz (28.35g) bar | 95mg per 8 oz cup |
| Caffeine per fl oz | 22.7mg | 5.7mg | 11.9mg |
| Servings to reach 400mg (FDA context) | 17.6 | 70.2 | 4.2 |
Sources: dark chocolate (70 to 85% cacao) is 22.7mg per 1 oz (28.35g) square per USDA FoodData Central SR Legacy 170273, 80mg per 100g times 28.35g (source), and the figure is carried in our dark chocolate (70 to 85% cacao) guide; milk chocolate is 5.7mg per 1 oz (28.35g) bar per USDA FoodData Central SR Legacy 167587, 20mg per 100g times 28.35g (source), and the figure is carried in our milk chocolate guide; brewed coffee is 95mg per 8 oz cup per USDA FoodData Central SR Legacy 171890, 40mg per 100g times 237g (source), and the figure is carried in our the caffeine database.
Why the three numbers are not measured the same way
Canned drinks list an exact figure because caffeine is a measured ingredient, so the number on the label is the number in the can. Brewed drinks are averages: grind, dose, water temperature and steep time move a cup of coffee or tea by tens of milligrams either way. When you compare across those categories, treat the canned figures as fixed and the brewed ones as a center point with real spread around it.
The three head-to-head pages
Each pairing has its own page with the full math:
- dark chocolate (70 to 85% cacao) vs milk chocolate, head to head
- dark chocolate (70 to 85% cacao) vs brewed coffee, head to head
- milk chocolate vs brewed coffee, head to head
Which one should you pick?
Take milk chocolate when you want the smallest dose of the three, dark chocolate (70 to 85% cacao) when you want a middle number without thinking about it, and brewed coffee when you actually want the 95mg and know how you handle it. If you drink more than one caffeinated thing a day, the useful move is adding the day up against the 400mg reference rather than judging each drink alone.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
Related reading
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
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Gear from this guide
FAQ
Which has the most caffeine, dark chocolate (70 to 85% cacao), milk chocolate or brewed coffee? brewed coffee, at 95mg per 8 oz cup. dark chocolate (70 to 85% cacao) has 22.7mg per 1 oz (28.35g) square and milk chocolate has 5.7mg per 1 oz (28.35g) bar.
Which of the three is strongest per ounce? dark chocolate (70 to 85% cacao), at about 22.7mg per fluid ounce, ahead of brewed coffee at 11.9mg and milk chocolate at 5.7mg.
How many brewed coffee servings reach the FDA 400mg reference? About 4.2 of them, at 8 oz cup each. The FDA cites 400mg a day as an amount generally not associated with negative effects in healthy adults. This is information, not advice.
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