To track your caffeine intake, multiply the number of servings by the caffeine in each. This formula adds up a day of coffee, tea, and other sources.
Total (mg) = Servings × mg per serving
What the terms mean
| Symbol | Meaning |
|---|---|
| Total | Total caffeine, in mg |
| Servings | Number of servings |
| mg per serving | Caffeine in one serving |
Worked example
Three 8 oz cups of brewed coffee at about 95 mg each is 3 × 95 = 285 mg of caffeine.
The 400 mg guideline. Health authorities consider up to about 400 mg of caffeine a day safe for most adults. Sensitivity varies, so adjust to how you feel.
See the Caffeine Calculator and the Caffeine Content Chart.