How much caffeine is in a Monster?
A 16 oz Monster Energy has about 160 mg of caffeine. See the amounts by size and variety, and how it compares to coffee.
A standard 16 oz Monster Energy has about 160 mg of caffeine, roughly two small coffees in one can. That works out to about 10 mg per ounce, so the bigger cans climb quickly.
| Monster | Size | Caffeine |
|---|---|---|
| Original (green) | 16 oz | 160 mg |
| Ultra (zero sugar) | 16 oz | 150 mg |
| Monster | 24 oz | 240 mg |
| Java Monster | 15 oz | ~200 mg |
At 160 mg, one 16 oz Monster is close to half the ~400 mg daily ceiling for adults. Pair it with morning coffee and you're near the top. See your real daily total in the Caffeine Calculator, or compare it with a Red Bull.
Compare other energy drinks
See the caffeine in Red Bull, 5-Hour Energy, Celsius, Prime Energy, Bang, Alani Nu, C4 Energy.
Written by Mike Zagare · Published
Mike Zagare is the founder of Knuckle. He tapered off a 500 to 600mg-a-day habit and built Knuckle from that protocol.
Common questions
Is a Monster stronger than a Red Bull?
By the can, usually yes. A 16 oz Monster (~160 mg) has about twice an 8.4 oz Red Bull (80 mg), though per ounce they're similar.
How much caffeine is in a Monster Ultra?
About 150 mg per 16 oz, nearly the same as the original, just zero sugar.
Is one Monster a day too much?
One 16 oz can is within limits for most healthy adults, but it's a large single dose, especially later in the day when it can hurt sleep.
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