Caffeine in Coffee
Complete caffeine data for every brew method and major brand — plus your personalised cup limit.
✓ Last reviewed March 2026 · USDA & brand data
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MyCaffeineCalculator Health Research Team
Caffeine data sourced from USDA FoodData Central, FDA caffeine analysis, and official brand nutrition panels. Reviewed March 2026.
How Many Cups Is Safe for You Today?
Caffeine by Brew Method
The way you brew coffee has a bigger impact on caffeine than the bean variety. Here's a definitive comparison:
| Brew Method | Typical Serving | Caffeine Range | Avg per oz |
|---|---|---|---|
| Drip / Filter (home) | 8 oz | 70–140 mg | ~12 mg/oz |
| French Press | 8 oz | 80–135 mg | ~13 mg/oz |
| Pour-over | 8 oz | 90–150 mg | ~14 mg/oz |
| AeroPress | 6 oz | 50–130 mg | ~14 mg/oz |
| Espresso (single shot) | 1 oz | 47–75 mg | ~63 mg/oz |
| Espresso (double / doppio) | 2 oz | 94–150 mg | ~63 mg/oz |
| Moka Pot | 3 oz | 60–130 mg | ~35 mg/oz |
| Cold Brew (ready to drink) | 12 oz | 150–250 mg | ~16 mg/oz |
| Cold Brew Concentrate | 2 oz (diluted) | 100–200 mg | varies |
| Instant Coffee | 8 oz | 30–90 mg | ~8 mg/oz |
| Decaf (drip) | 8 oz | 2–15 mg | ~2 mg/oz |
Why cold brew is stronger than hot coffee: Cold brew uses a coffee-to-water ratio 2–3× higher than drip brewing, and steeps for 12–24 hours rather than minutes. This extracts significantly more caffeine per ounce. A 12oz cold brew from a café typically contains 150–250mg — 60–160% more than a standard 8oz drip coffee.
Caffeine by Major Coffee Brand
Starbucks
| Drink | Tall (12oz) | Grande (16oz) | Venti (20oz) |
|---|---|---|---|
| Pike Place Roast (brewed) | 235 mg | 310 mg | 410 mg |
| Blonde Roast (brewed) | 270 mg | 360 mg | 475 mg |
| Cold Brew | 155 mg | 205 mg | 310 mg |
| Nitro Cold Brew | 215 mg | 280 mg | — |
| Latte (hot or iced) | 75 mg | 150 mg | 150 mg |
| Cappuccino | 75 mg | 150 mg | 150 mg |
| Americano | 150 mg | 225 mg | 300 mg |
| Flat White | 130 mg | 195 mg | — |
| Frappuccino (coffee based) | 65 mg | 95 mg | 125 mg |
| Chai Latte | 70 mg | 95 mg | 120 mg |
| Matcha Latte | 55 mg | 80 mg | 110 mg |
Starbucks Venti Blonde Roast (475mg) exceeds the FDA's 400mg daily guideline in a single drink for most adults. It's the most caffeinated regularly ordered item at any major coffee chain. A 120 lb person's entire safe daily limit is about 336mg — this drink alone puts them 41% over their limit.
Dunkin' & Other Chains
| Drink | Small | Medium | Large |
|---|---|---|---|
| Dunkin' Brewed Coffee | 150 mg (10oz) | 210 mg (14oz) | 300 mg (20oz) |
| Dunkin' Cold Brew | 174 mg | 260 mg | 347 mg |
| Dunkin' Espresso (single) | 75 mg per shot | ||
| McDonald's McCafé Coffee | 109 mg (12oz) | 145 mg (16oz) | 180 mg (21oz) |
| Tim Hortons Brewed Coffee | 140 mg (10oz) | 205 mg (14oz) | 270 mg (20oz) |
| Peet's Coffee Drip | ~200 mg (12oz) | ~267 mg (16oz) | — |
Dark Roast vs Light Roast: Which Has More Caffeine?
This is one of the most common coffee myths. The short answer: light roast has slightly more caffeine — but the difference is minimal in practice.
Roasting burns off a small amount of caffeine. A light roast bean has marginally more caffeine than the same bean after dark roasting. However, dark roast beans expand and lose density during roasting. If you measure coffee by weight (as professionals do), light roast has marginally more caffeine. If you measure by scoops (as most home brewers do), dark roast may have slightly more because the lighter-density beans pack more mg per scoop.
The practical difference is small — roughly 5–10% between roast levels of the same bean. Far more significant is the brew method, water temperature, grind size, and brew time, all of which have much larger effects on caffeine extraction than roast level.
The Starbucks Blonde vs Pike Place example: Starbucks Blonde is a light roast, Pike Place is a medium roast. A Grande Blonde has 360mg; a Grande Pike Place has 310mg — a 16% difference. But this difference comes primarily from Starbucks using slightly more coffee in the Blonde blend, not purely from roast level.
How Much Coffee Is Too Much?
The FDA's 400mg/day guideline translates to roughly 4–5 standard 8oz cups of drip coffee for the average adult. But the "how many cups" answer varies widely by drink type:
| Drink | Cups to reach FDA 400mg limit |
|---|---|
| Instant coffee (8oz) | ~6–7 cups |
| Standard drip coffee (8oz, 95mg) | ~4 cups |
| Espresso shots | ~6 shots |
| Cold brew (12oz) | ~2 cups |
| Starbucks Grande Pike Place | 1.3 drinks |
| Starbucks Venti Blonde Roast | 0.8 drinks (one is already over) |
Frequently Asked Questions
How much caffeine is in a cup of coffee?
A standard 8oz cup of drip brewed coffee contains approximately 95mg on average, with a range of 70–140mg depending on bean, grind, and brew time. Espresso contains 63mg per 1oz shot. Cold brew runs 150–250mg per 12oz serving. Instant coffee is lower at 30–90mg per cup.
Does dark roast have more caffeine than light roast?
Slightly less, not more. Roasting burns off a small amount of caffeine, so light roast retains marginally more. The difference is roughly 5–10% and largely negligible in practice. Brew method, water temperature, and amount of coffee used have far larger effects on final caffeine content than roast level.
How many cups of coffee can I drink per day?
For an average healthy adult, 4–5 standard 8oz cups of drip coffee (380–475mg total) approaches the FDA's 400mg guideline. Use the calculator at the top of this page for your weight-specific limit. Pregnant women should stop at 2 cups; teenagers at 1 small cup maximum.
Is cold brew stronger than regular coffee?
Yes, significantly. Cold brew uses 2–3× more coffee grounds than drip brewing and steeps for 12–24 hours, extracting far more caffeine per ounce. A 12oz cold brew from a café typically contains 150–250mg — up to 160% more than a standard 8oz drip coffee. When tracking caffeine, treat a cold brew as roughly 2 cups of regular coffee.
How much caffeine is in decaf coffee?
Decaf is not completely caffeine-free. Most decaf coffees contain 2–15mg per 8oz cup, with the average around 7mg. This is negligible for most people, but highly caffeine-sensitive individuals or slow metabolizers may notice even small amounts. Swiss Water Process and CO2 decaffeination methods generally leave less residual caffeine than solvent-based methods.
Related Tools
Sources: USDA FoodData Central · FDA caffeine guidance · Starbucks, Dunkin', McDonald's official nutrition panels · Last reviewed March 2026