Health & Fitness Calculators
All our calculators are free, instant, and support both metric and imperial units. Export your results as PDF for easy sharing.
BMI Calculator
Check your Body Mass Index (BMI) using metric or imperial units.
Daily Calorie Needs (BMR/TDEE)
Estimate daily calories burned at rest (BMR) and total daily energy expenditure (TDEE).
Body Fat % Calculator
Estimate body fat % using circumference-based methods.
Ideal Weight Calculator
Compare multiple formulas (Devine, Robinson, Miller) for 'ideal' body weight ranges.
Macro Split Calculator
Get daily grams of protein, carbs, and fat based on calorie target and goal.
How to Use These Calculators
Each calculator is designed to be simple and accurate. Enter your measurements, choose your preferred units (metric or imperial), and click Calculate to get instant results.
Your inputs are automatically saved in your browser, so you can easily recalculate if your measurements change. All calculators support PDF export for your records.
Need help understanding your results? Check out our comprehensive guides or worked examples.