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470 tools
This free lean body mass (LBM) calculator estimates LBM based on body weight, height, age, and gender. It compares the results of several popular formulas.
This pregnancy weight gain calculator provides a recommended weight gain schedule on a week-by-week basis based on pre-pregnancy bodyweight and IOM guidelines.
This free calculator calculates the target heart rate range for maximizing exercise benefit based on age and resting heart rate.
Free calculator to estimate the number of calories burned during routine daily activities or a workout based on activity duration.
This free calculator estimates a person's one rep max (1RM) based on the number of repetitions they can perform with a given weight.
This free body fat calculator estimates body fat percentage based on the U.S. Navy Method and the BMI method. It gives the loss needed to reach ideal body fat.
This free ideal weight calculator estimates ideal healthy bodyweight based on age, gender, and height based on several popular formulas.
This calorie calculator estimates the number of calories needed each day to maintain, lose, or gain weight. Learn the kinds of calories and their effects.
This macro calculator estimates the macronutrient needs of a person based on their age, physical characteristics, activity level, and bodyweight goals.
This free protein calculator estimates the amount of protein a person needs each day to remain healthy based on certain averages and recommendations.
Calculator to compute the time to wake up or go to bed based on sleep cycle or duration of sleep required. Also learn more about sleep.
This free conception calculator estimates possible as well as most likely dates of conception, and their corresponding due dates over six menstrual cycles.
This free due date calculator estimates the due date based on the menstrual cycle, ultrasound, conception date, or IVF transfer date.
This free ovulation calculator provides estimates of a person's possible ovulation windows and corresponding due dates over six menstrual cycles.
Free Body Mass Index calculator gives out the BMI value and categorizes BMI based on provided information from WHO and CDC for both adults and children.
Calculate your body frame size with our free online tool. Get accurate results instantly. No signup required.
Use the calorie deficit calculator to estimate how long it will take to reach your target weight by following a given calorie deficit.
Calculate your training heart rate zones using Max HR, Karvonen (HR Reserve), or Lactate Threshold methods. Optimize cardio training intensity.
Heart rate training keeps you in "the zone". Use the max heart rate calculator to know what your average heart rate should be during a training session.
The waist-to-hip ratio calculator helps you assess your waist-hip ratio, used as an indicator or measure of health.
Use this pace calculator to plan your running pace per mile in order to determine how fast you need to run to finish your race within a certain time.
This calculator computes body fat percentage using methods from the Army Body Fat Assessment of the Army Body Composition Program.
This free fat intake calculator estimates the amount of dietary fat a person should consume daily based on age, height, weight, and activity.
Our keto calculator helps you find the optimal macros intake for your ketogenic diet.