Caffeine Content of Every Drink

80 drinks ranked by caffeine per serving, with the per-ounce column that coffee-shop math hides — an espresso shot is the most concentrated thing on the list while still being small. The % column is each drink against the FDA's 400 mg/day ceiling. Every row links to that drink's cutoff-time page.

Drink	Per serving	Per fl oz	% of 400 mg day	Source
Starbucks Blonde Roast · 16 oz	360 mg	22	90%	brand
Starbucks Pike Place · 16 oz	352 mg	22	88%	brand
Bang · 16 oz	300 mg	19	75%	CSPI
Reign · 16 oz	300 mg	19	75%	brand
Dunkin' iced coffee · 24 oz (medium)	294 mg	12	74%	unverified
Nitro cold brew · 16 oz	280 mg	18	70%	brand
Celsius Essentials · 16 oz	270 mg	17	68%	CSPI
Americano · 16 oz (3 shots)	225 mg	14	56%	brand
Starbucks Tripleshot · 15 oz	225 mg	15	56%	CSPI
Dunkin' hot coffee · 14 oz (medium)	210 mg	15	52%	CSPI
Tim Hortons coffee · 14 oz (medium)	205 mg	15	51%	brand
Cold brew · 16 oz	205 mg	13	51%	brand
C4 Energy · 16 oz	200 mg	12	50%	CSPI
Ghost Energy · 16 oz	200 mg	12	50%	label
Alani Nu · 12 oz	200 mg	17	50%	CSPI
Prime Energy · 12 oz	200 mg	17	50%	brand
Celsius · 12 oz	200 mg	17	50%	CSPI
Java Monster · 15 oz	200 mg	13	50%	brand
5-hour Energy · 1.9 oz	200 mg	105	50%	CSPI
Pre-workout · 1 scoop (typical)	200 mg	—	50%	CSPI
Caffeine tablet (NoDoz) · 1 tablet	200 mg	—	50%	CSPI
Iced coffee · 16 oz	185 mg	12	46%	brand
Vanilla sweet cream cold brew · 16 oz	185 mg	12	46%	brand
Caffè mocha · 16 oz	175 mg	11	44%	brand
Dunkin' cold brew · 14 oz (medium)	174 mg	12	44%	unverified
Monster Energy · 16 oz	160 mg	10	40%	CSPI
Rockstar · 16 oz	160 mg	10	40%	CSPI
NOS · 16 oz	160 mg	10	40%	CSPI
Zoa · 12 oz	160 mg	13	40%	label
Latte · 16 oz (2 shots)	150 mg	9	38%	brand

Most caffeine per fluid ounce

Concentration, not dose — the espresso lesson. Small drinks sit here; big cups sit above.

Drink	mg / fl oz
5-hour Energy · 1.9 oz	105 mg
Espresso · single shot	63 mg
Cortado · 4 oz (2 shots)	32 mg
Turkish coffee · 2 oz	25 mg
Starbucks Blonde Roast · 16 oz	22 mg
Starbucks Pike Place · 16 oz	22 mg
Bang · 16 oz	19 mg
Reign · 16 oz	19 mg
Nitro cold brew · 16 oz	18 mg
Celsius Essentials · 16 oz	17 mg

Common questions

How much caffeine should you have in a day?

The FDA cites 400 mg per day as the safe ceiling for healthy adults — the % column in the table shows each drink against it. Pregnant? The limit drops to 200 mg; that calculator is linked below.

Which drink has the most caffeine per ounce?

Espresso (about 63 mg per single fluid ounce) and 5-hour Energy (roughly 105 mg/oz) lead per ounce. Per serving, the winners are different: Starbucks Blonde Roast (360 mg) and Bang/Reign (300 mg) deliver more total caffeine because you drink more liquid.

Is cold brew stronger than espresso?

Per cup, yes: a 16 oz cold brew carries about 205 mg versus 63 mg in a single espresso shot. Per ounce the espresso wins by far — cold brew just comes in a bigger glass.

Method

Values are per labeled serving (the same figures every calculator on this site uses). Each drink carries its own source — the brand's published figure where one exists, otherwise USDA FoodData Central or CSPI's caffeine chart — shown in the Source column; per fl oz divides by serving volume. Powders and pills have no fluid ounces, so they show a dash there. The ranking is honest about serving size — which is exactly why a 12 oz Celsius (200 mg) outranks an 8.4 oz Red Bull (80 mg) on dose but not concentration.

When to stop, by drink → Drink vs drink →