Quick answer: a standard 12 oz Celsius has 200 mg of caffeine. Celsius Essentials jumps to 270 mg per 16 oz can, On-The-Go powder packets match the standard 200 mg, and the Hydration line has none. All figures come from Celsius' own Essential Facts page.
Caffeine by line
| Line | Size | Caffeine |
|---|---|---|
| Celsius (original) and Vibe | 12 oz can | 200 mg |
| Celsius Essentials | 16 oz can | 270 mg |
| On-The-Go powder | 1 packet | 200 mg |
| Celsius Hydration | 1 serving | 0 mg |
Sugar-free flavoring does not change the number; regular and zero-sugar versions of the same line carry identical caffeine. The brand itself recommends no more than two standard cans, or one Essentials, per day, and the Essentials can carries a printed one-per-day warning. For context, the FDA's general guideline for healthy adults is 400 mg daily, so a single standard Celsius is half of that before coffee enters the picture.
Looking for a different drink? The full caffeine database has every chain and can we have verified, including the Celsius vs Alani Nu comparison.
How Celsius compares
Celsius sits at the strong end of mainstream energy drinks: a same-era Red Bull is 80 mg per 8.4 oz and a classic Monster is 160 mg per 16 oz, while Alani Nu and Prime Energy match Celsius at 200 mg. Against coffee, one can lands between a 16 oz latte and a strong drip, and well below a Dutch Bros cold brew.