Health & fitness calculators

25 calculators

Health & fitness

Adult BMI

Calculate body mass index from weight and height.

Health & fitness

Running pace and pace converter

Convert distance and time into min/km, min/mile, km/h, and mph.

Health & fitness

Calorie needs

Estimate daily energy needs from a basal-energy estimate and activity factor.

Health & fitness

Basal metabolic rate

Estimate basal energy expenditure using the Mifflin–St Jeor equations.

Health & fitness

Body fat estimate

Estimate body-fat percentage from BMI, age and sex coefficient.

Health & fitness

Macronutrients

Split a daily calorie target into carbohydrate, protein and fat grams.

Health & fitness

Ideal weight range

Estimate the weight range corresponding to a chosen BMI range.

Health & fitness

Pregnancy weight gain range

Estimate a planning range by adding guideline values to pre-pregnancy weight.

Health & fitness

Army body-fat estimate

Estimate body-fat percentage using circumference inputs and the U.S. Army-style logarithmic model.

Health & fitness

Carbohydrate intake

Convert a calorie target and carbohydrate percentage into grams per day.

Health & fitness

Lean body mass

Estimate lean mass from body weight and an entered body-fat percentage.

Health & fitness

Healthy weight range

Calculate a screening weight range from height and selected BMI limits.

Health & fitness

Calories burned

Estimate exercise energy using body weight, activity MET value and duration.

Health & fitness

One-repetition maximum

Estimate one-repetition maximum from a lifted weight and repetitions.

Health & fitness

Target heart rate

Estimate training heart-rate zones from age and resting heart rate.

Health & fitness

Protein intake

Calculate a protein target from body weight and a chosen grams-per-kilogram factor.

Health & fitness

Fat intake

Convert a calorie target and fat percentage into grams per day.

Health & fitness

Total daily energy expenditure

Estimate total daily energy expenditure from BMR and an activity multiplier.

Health & fitness

Kidney eGFR planning

Apply an entered age/sex-adjusted clinical coefficient to serum creatinine for educational comparison.

Health & fitness

Body surface area

Estimate body surface area using the Mosteller formula.

Health & fitness

Blood alcohol estimate

Estimate alcohol concentration from alcohol mass, body weight and distribution ratio.

Health & fitness

Overweight screening

Compare current weight with a selected BMI-based upper screening weight.

Health & fitness

Pregnancy and due-date estimate

Estimate due date and conception date from the first day of the last menstrual period.

Health & fitness

Ovulation and period estimate

Estimate the next period and a likely ovulation date from a regular cycle.

Health & fitness

Sleep cycles

Estimate sleep duration and cycle count from a chosen number of average cycles.