How much caffeine is in Celsius Essentials?

A 16 fl oz can of Celsius Essentials has 270 mg of caffeine.

That's about 3 cups of brewed coffee, and two thirds of the 400 mg a day the FDA cites for most healthy adults.

Source: celsius.com · checked 10 Nov 2026

When did you have it?

Had at 3 pm, about 95 mg is still in you at an 11 pm bedtime. That might affect your sleep.

Bedtime

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Latest time to drink it

For an 11 pm bedtime, most people should finish a 16 fl oz can of Celsius Essentials by about 10:20 am. The table works it out for other bedtimes and for how sensitive you are: it is the latest time to start one so that the caffeine left stays under the line all night.

Bedtime	Very sensitive under 25 mg	Average under 50 mg	Not very sensitive under 100 mg
9 pm	Too much for one evening	8:20 am	1:20 pm
10 pm	Too much for one evening	9:20 am	2:20 pm
11 pm	5:20 am	10:20 am	3:20 pm
Midnight	6:20 am	11:20 am	4:20 pm
1 am	7:20 am	12:20 pm	5:20 pm

For a 16 fl oz can of Celsius Essentials, average clearance (half-life 5 h), 8 hours of sleep. "Any time" means even one at bedtime stays under the line.

How long it lasts

The caffeine from a 16 fl oz can of Celsius Essentials peaks in your blood about 75 minutes after you start it, at roughly 230 mg. Half of it is gone in about 5 hours for an average adult; that ranges from roughly 3 to 7 hours, and longer in pregnancy or with some medicines.

Time after	3 hours	6 hours	9 hours	12 hours
Still in you	190 mg	125 mg	83 mg	54 mg

So one had at 3 pm leaves about 95 mg at 11 pm. How long caffeine lasts explains the curve.

How it compares

Celsius Essentials is stronger than 93% of the 41 energy drinks we track, by caffeine per serving.

Per fluid ounce (17 mg) it is stronger than 86% of them.

To reach 400 mg in a day you would need about 1½ of these.

Less caffeine

Rockstar Punched 240 mg, 16 fl oz can
5-hour Energy Extra Strength 230 mg, 1 shot
3D Energy 200 mg, 16 fl oz can

More caffeine

Bang Energy 300 mg, 16 fl oz can
Bucked Up Energy Drink 300 mg, 16 fl oz can
Reign Total Body Fuel 300 mg, 16 fl oz can

FAQ

Is Celsius Essentials high in caffeine?

Yes, very. A 16 fl oz can of Celsius Essentials has 270 mg, which is 2.8 times an 8 fl oz cup of brewed coffee (95 mg).

Can I drink Celsius Essentials at night?

Not if you want to sleep well. Had at 7 pm, it leaves about 165 mg in an average adult at an 11 pm bedtime, above the 50 mg most people sleep fine with. The latest time for an 11 pm bedtime is about 10:20 am.

How long does the caffeine in Celsius Essentials last?

It peaks about 75 minutes after you start it. Of the 270 mg, about 125 mg is still in you 6 hours later and 54 mg after 12 hours, for an average adult with a 5-hour half-life.

Does Celsius Essentials have more caffeine than a cup of coffee?

Yes. A 16 fl oz can of Celsius Essentials has 270 mg; an 8 fl oz cup of coffee has 95 mg.

Method and limits

The caffeine figure comes from celsius.com; recipes, brewing and batches vary, so a real serving can differ. The curves use a standard one-compartment model with an average 5-hour half-life and a sleep-friendly line of 50 mg; your own body may clear caffeine faster or slower. How it works has the details.

These are estimates for information, not medical advice. If you are pregnant, ask your doctor; common guidance is under 200 mg a day.