Your body has metrics. Know them.
Free, accurate, evidence-based health calculators. No sign-up, no invasive ads.
Calculators
Tools based on formulas validated by international health organisations
BMI Calculator
Calculate your Body Mass Index and find out if your weight is healthy for your height.
CalculateBody Fat % Calculator
Estimate your body fat percentage using the US Navy method.
CalculateIdeal Weight Calculator
Calculate your ideal weight using different validated scientific formulas.
CalculateWaist-to-Height Ratio
Calculate your waist-to-height ratio, a reliable cardiovascular risk indicator more accurate than BMI.
CalculateFFMI
Calculate your fat-free mass index to assess your natural muscular potential.
CalculateBMR & Calorie Calculator
Calculate your Basal Metabolic Rate and daily calorie needs based on your activity level.
CalculateTDEE — Total Daily Energy Expenditure
Calculate your total daily energy expenditure with detailed caloric targets by goal.
CalculateMacro Calculator
Calculate your ideal distribution of protein, carbohydrates and fat based on your TDEE and goal.
CalculateHydration Calculator
Calculate your daily water needs based on your weight, activity level and climate.
CalculateEnergy Balance
Calculate your caloric surplus or deficit and estimate the rate of weight change.
CalculateHeart Rate Calculator
Calculate your maximum heart rate and personalised training zones.
CalculateHeart Rate Zones
Discover your 5 cardiovascular training zones and what each one develops.
CalculateTarget Heart Rate
Calculate your target heart rate for each training intensity.
CalculateVO2 Max
Estimate your maximum oxygen uptake using the Cooper, Rockport or HR ratio method.
CalculatePace / Speed / Time
Calculate running pace, speed and finish time for any distance.
Calculate1RM (One Rep Max)
Estimate your maximum one-rep weight and get your complete training intensity table.
CalculatePower Zones (FTP)
Calculate your 7 cycling power training zones based on your FTP.
CalculateWorkout Routine Generator
Generate a personalised training plan based on your goal, level and available days.
CalculateUnit Converter
Convert weight, height, distance, temperature and speed units instantly.
CalculateFitness Name Generator
Generate original names for your gym, fitness brand, class or training app.
Calculate