Free Health & Fitness Calculators with HealthCalc

Free online health calculators. BMI calculator, calorie calculator, body fat percentage, water intake, and more.

All Tools

Calculate your Body Mass Index and healthy weight range.

Estimate your daily calorie needs based on your goals.

Calculate how much water you should drink daily.

Estimate your body fat percentage using US Navy method.

Find your healthy weight range based on height.

Estimate your baby's due date accurately.

Calculate optimal heart rate zones for exercise.

Calculate your ideal macronutrient ratios.

Find optimal bedtimes based on sleep cycles.

Calculate your running pace and finish time.

All tools run in your browser. Instant results.

Your health data stays private.

No signup, no limits, no premium tiers.

Works on phones, tablets, and desktops.