Free Health & Fitness Calculators
Understand your body with clear, science-based calculators — BMI, body fat, BMR and healthy weight ranges.
2 free toolsBMI Calculator
Calculate BMI with healthy weight range, body-fat %, BMR & a visual scale
Calorie Calculator
Daily calories (TDEE), BMR & goals for weight loss, maintenance & gain
Check your Body Mass Index on a colour-coded scale, see your healthy weight range, estimate body-fat percentage and daily calorie needs. Results are shown in both metric and imperial for men and women, with plain-English guidance.
Frequently Asked Questions
Are these health calculators accurate?
They use widely-accepted formulas (BMI, BMR, body-fat estimates) and are great for tracking trends, but they're for general guidance, not medical advice.
Are they free?
Yes, every health calculator is free with no sign-up.
Do they support metric and imperial?
Yes — you can switch between metric (kg, cm) and imperial (lb, ft/in) units.