Every BMI, calorie, macro, heart-rate, and body-composition tool you need to plan training and nutrition — instant results, calculated entirely on your device.
26 free tools — pick one below or use the search bar above.
Check your Body Mass Index from height and weight in seconds.
Open calculator →Estimate body fat % using the U.S. Navy tape-measure method.
Open calculator →Find a healthy target weight range for your height and frame.
Open calculator →Measure fat distribution and related health risk in one ratio.
Open calculator →Discover whether you lean ectomorph, mesomorph, or endomorph.
Open calculator →Find your fat-free mass using the Boer formula.
Open calculator →Compare your body's fitness level to your actual age.
Open calculator →Get your daily maintenance, cutting, and bulking calorie targets.
Open calculator →Calculate the calories your body burns at complete rest.
Open calculator →Split your calories into protein, carb, and fat grams.
Open calculator →Find your daily protein target based on weight and goal.
Open calculator →Work out how much water to drink based on weight and activity.
Open calculator →Build a personal drink-water schedule spread across your day.
Open calculator →See how many weeks it'll take to reach your goal weight.
Open calculator →See your five training zones from warm-up to max effort.
Open calculator →Get a Karvonen-based target bpm range for any workout intensity.
Open calculator →Estimate calories burned for 20+ activities using MET values.
Open calculator →Turn your daily step count into an estimated calorie burn.
Open calculator →Calculate pace, speed, and finish-time predictions for any run.
Open calculator →Estimate your true one-rep max from any working set.
Open calculator →Estimate your aerobic fitness from resting heart rate.
Open calculator →Compare raw powerlifting strength fairly across bodyweights.
Open calculator →Check your cardiovascular fitness from post-exercise HR drop.
Open calculator →Estimate your due date using Naegele's rule from your last period.
Open calculator →Find your likely ovulation day and fertile window.
Open calculator →Time your bedtime or alarm to 90-minute sleep cycles.
Open calculator →