Caffeine calculator →

Add what you drank today and see how much is still in you at bedtime.

A Monster →

About 164 mg per 16 fl oz can.

A Rockstar →

About 164 mg per 16 fl oz can.

A Monster Zero Ultra →

About 144 mg per 16 fl oz can.

An iced latte →

About 133 mg per 12 fl oz.

A flavored latte →

About 130 mg per 12 fl oz.

A latte →

About 130 mg per 12 fl oz.

A cappuccino →

About 130 mg per 12 fl oz.

An oat milk latte →

About 130 mg per 12 fl oz.

An Americano →

About 127 mg per 12 fl oz.

A mocha →

About 123 mg per 12 fl oz.

Cuban coffee →

About 119 mg per 1 cafecito (2 fl oz).

Coffee →

About 96 mg per 8 fl oz.

A sugar-free Red Bull →

About 76 mg per 8.4 fl oz can.

A Red Bull →

About 75 mg per 8.4 fl oz can.

Iced tea →

About 72 mg per 12 fl oz.

An energy drink →

About 72 mg per 8 fl oz can.

A shot of espresso →

About 64 mg per 1 shot (1 fl oz).

Black tea →

About 48 mg per 8 fl oz.

A Diet Coke →

About 43 mg per 12 fl oz can.

Oolong tea →

About 38 mg per 8 fl oz.

A Coke →

About 33 mg per 12 fl oz can.

Green tea →

About 29 mg per 8 fl oz.

Hot chocolate →

About 7 mg per 8 fl oz.

Dark chocolate →

About 4 mg per 1 square (8 g).