Fitness Calculators

Take the guesswork out of your fitness journey with our science-based calculators

Free to use

Science-backed formulas

Personalised results

Calculate your Body Mass Index to understand if you're in a healthy weight range

Determine your Basal Metabolic Rate - calories your body burns at rest

Estimate your body fat percentage using body measurements

Calculate your one-rep max for any exercise to plan your training

Calculate your daily macronutrient needs for your fitness goals

Find your ideal weight range based on scientific formulas

Why Use Our Calculators?

Our calculators use scientifically proven formulas to give you accurate, personalised results

All calculators are completely free to use with no hidden costs or sign-ups required.

Based on peer-reviewed research and validated formulas used by fitness professionals.

Get results tailored to your specific body composition, goals, and activity level.

Choose a calculator above to begin optimising your fitness journey today.