Caffeine Calculator

How Much Caffeine Is Safe?

Caffeine is a stimulant found in coffee, tea, cola, energy drinks, and chocolate. Daily limits vary by age and pregnancy status. Use this calculator to total your intake from several items and compare it with a guideline. Related tools: Caffeine Overdose Calculator and Caffeine Half-Life Tracker.

Typical Caffeine Content

Values are approximate and depend on brand, brew strength, and serving size. Black tea is often around 50 mg per cup, filter coffee about 140 mg per mug, instant coffee about 100 mg, cola about 40 mg per can, energy drinks about 80 mg, chocolate about 6 mg per bar, espresso about 45 mg per shot, and green tea about 40 mg per cup.

Daily Limits by Profile

• Adults: up to about 400 mg per day for most healthy adults
• Teens: up to about 100 mg per day
• Pregnancy: up to about 200 mg per day