Health & Fitness Calculators
Health and fitness calculators for weight, calories, blood pressure, lab results, training and sleep, with sourced cut-offs.
About Health & Fitness Calculators
Results are estimates and screening figures, not a diagnosis. Each tool names its cut-offs and formulas and where they come from, and every calculation runs in your browser.
Work out your BMI, with the lower thresholds for people of South Asian, Chinese and other backgrounds and percentiles for children and teens, the healthy weight range for your height, your waist-to-height and waist-to-hip ratios, and your body fat from tape measurements. Find your BMR, daily calories, macros and a calorie deficit with a goal date. Check a blood pressure reading against the AHA/ACC, NICE and ESC guidelines, read eGFR and creatinine clearance from a creatinine result, and convert HbA1c and blood sugar with the ADA, WHO, NICE and ICMR ranges. Plan training with running pace, splits and race predictions, a one-rep max with its percentage table, and bedtimes and wake-up times in whole sleep cycles, with the hours recommended for your age.