Caffeine Calculator

☕ Free Caffeine Calculator

Estimate your daily caffeine limit and a practical single-dose range based on your body weight, age, pregnancy status, and activity level.

Enter Your Information

Please enter a valid adult age and body weight.
This calculator is designed for adults 18 and older.
If pregnant or breastfeeding, the calculator uses a more conservative 200 mg/day reference.
Activity provides exercise context but does not override the daily caffeine reference.
Include coffee, tea, energy drinks, pre-workout, chocolate, and caffeine supplements.

Your Caffeine Recommendation

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recommended daily caffeine reference
Daily Limit —
Single Dose —
Workout Reference —
Remaining Today —
Caffeine Status
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Current Daily Intake —
Enter your information to calculate your caffeine guidance.
This calculator provides general caffeine guidance for informational purposes only. Individual caffeine sensitivity varies. Pregnant or breastfeeding individuals, people with medical conditions, and people taking medications should discuss caffeine intake with a qualified healthcare professional.
CAFFEINE CALCULATOR QUICK GUIDE

How to Use the Caffeine Calculator

Use the Caffeine Calculator to estimate your daily caffeine intake based on the amount and type of caffeine-containing drinks or supplements you consume.

01

Enter Your Caffeine Source

Select or enter the caffeine source you are consuming, such as coffee, tea, energy drinks, soda, pre-workout, or another caffeine-containing product.

02

Enter the Amount

Enter the serving size or caffeine amount shown on the product label. Use the correct unit if the calculator provides different measurement options.

03

Add Your Servings

Enter how many servings you normally consume during the day. Include multiple caffeine sources when calculating your total daily intake.

04

Calculate Your Caffeine Intake

Click the calculate button to estimate your total caffeine intake and review the result in milligrams (mg).

Common Caffeine Sources

Coffee Tea Energy Drinks Pre-Workout Soda Supplements
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Understand Your Result

Your result is an estimate of your total daily caffeine intake based on the information you entered. Caffeine amounts can vary between brands, products, and serving sizes, so check the product label whenever possible.

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WANT TO LEARN MORE?

Learn More About the Caffeine Calculator

Read the complete guide to learn how caffeine intake is estimated, how common caffeine sources compare, and which factors can affect your daily caffeine consumption.

Read the Complete Caffeine Calculator Guide →
Quick Tip: Keep track of all caffeine sources you consume during the day, especially coffee, energy drinks, tea, pre-workout products, and caffeine-containing supplements.
Note: This calculator provides a general educational estimate and is not intended to provide medical advice. Individual sensitivity to caffeine can vary.