BMI, calories, body fat, ideal weight, and a few pregnancy and fitness calculators — quick estimates, not medical advice.
Find your daily calorie needs based on activity level.
Estimate body fat using the U.S. Navy tape-measure method.
Get a daily calorie target for losing, maintaining, or gaining weight.
Three well-known formulas for estimated ideal body weight.
Estimate your 1RM and a training percentage table.
Estimate your fertile window from your last period and cycle length.
Find running pace, average speed, or time for any distance.
Estimate your due date and current week from your last period.
These calculators estimate common health and fitness numbers: BMI, ideal weight, body fat percentage, daily calories, BMR and TDEE, one-rep max, running pace, ovulation and pregnancy due dates. They are useful for setting goals, tracking trends and having a more informed conversation with a professional.
They use published formulas, which are population averages. Your own body may differ because of muscle mass, age, genetics, medical conditions and many other factors. Nothing here is medical advice, and none of these tools can diagnose or treat any condition. Speak to a doctor or qualified dietitian before making significant changes to diet, exercise or health care.