Home / Caffeine database Source-backed comparison
Compare caffeine by drink and serving Compare two source-backed drink records by serving, market, caffeine amount, concentration and calculated half-life timeline.
First drinkBrewed coffee — 95 mg Espresso — 63 mg Starbucks UK Caffè Latte — 89.1 mg Starbucks brewed coffee — Tall — 260 mg Costa Signature Blend espresso — 100 mg Nespresso Original espresso — 65 mg Red Bull Energy Drink — 80 mg Monster Energy Original Green — 160 mg CELSIUS Energy — 200 mg PRIME Energy — 200 mg Rockstar Original Energy — 160 mg Lucozade Alert — 160 mg REIGN Total Body Fuel — 300 mg Black tea — 48 mg Green tea — 29 mg Coca-Cola Original Taste — 34 mg Diet Coke — 46 mg Pepsi — 38 mg Pepsi Zero Sugar — 63 mg Starbucks UK Cappuccino — 89.1 mg Starbucks UK Espresso — 44.6 mg Starbucks UK Flat White — 89.1 mg Costa Signature Blend Latte — 200 mg Costa Signature Blend Cappuccino — 325 mg Costa Signature Blend Americano — 325 mg Costa Signature Blend Flat White — 241 mg Costa Signature Blend Cortado — 141 mg Costa Decaf coffee — 2 mg Second drinkBrewed coffee — 95 mg Espresso — 63 mg Starbucks UK Caffè Latte — 89.1 mg Starbucks brewed coffee — Tall — 260 mg Costa Signature Blend espresso — 100 mg Nespresso Original espresso — 65 mg Red Bull Energy Drink — 80 mg Monster Energy Original Green — 160 mg CELSIUS Energy — 200 mg PRIME Energy — 200 mg Rockstar Original Energy — 160 mg Lucozade Alert — 160 mg REIGN Total Body Fuel — 300 mg Black tea — 48 mg Green tea — 29 mg Coca-Cola Original Taste — 34 mg Diet Coke — 46 mg Pepsi — 38 mg Pepsi Zero Sugar — 63 mg Starbucks UK Cappuccino — 89.1 mg Starbucks UK Espresso — 44.6 mg Starbucks UK Flat White — 89.1 mg Costa Signature Blend Latte — 200 mg Costa Signature Blend Cappuccino — 325 mg Costa Signature Blend Americano — 325 mg Costa Signature Blend Flat White — 241 mg Costa Signature Blend Cortado — 141 mg Costa Decaf coffee — 2 mg
Measure Red Bull Energy Drink Brewed coffee Named serving 250 ml can 8 fl oz / 237 ml Market UK General reference Caffeine per serving 80 mg 95 mg Caffeine per 100 ml 32.0 mg 40.1 mg Value basis Manufacturer listed Authoritative reference Estimated after 5 hours 40 mg 47.5 mg
Choose any two records. The selected default serving is used; open each detail page to inspect every documented size.
Calculated five-hour timeline This table applies the same exponential half-life equation to both starting amounts. It does not show measured blood levels or predict which drink will affect a particular person more.
Hours after serving Red Bull Energy Drink Brewed coffee 0 80 mg 95 mg 3 52.8 mg 62.7 mg 5 40 mg 47.5 mg 8 26.4 mg 31.3 mg 10 20 mg 23.8 mg 12 15.2 mg 18.0 mg
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