Fitness & Health Calculators

BMI Calculator

Body mass index from height and weight (metric or US).

Calorie Calculator

Estimated daily calories by sex, age, size, and activity.

Body Fat Calculator

Estimate body fat percentage using US Navy circumference formulas.

Army Body Fat Calculator

2023 Army one-site abdomen tape method with maximum allowable % by age.

Lean Body Mass Calculator

Compare Boer, James, Hume, and Peters LBM estimates from weight and height.

BMR Calculator

Basal metabolic rate and daily calories by activity level.

Pregnancy Calculator

Due date from last menstrual period (280-day rule).

Pregnancy Conception

Conception estimate from due date, LMP with cycle, or ultrasound GA.

Pregnancy Weight Gain

Recommended gain ranges by pre-pregnancy BMI.

Calories Burned Calculator

Estimate calories burned during activities by duration or distance.

One Rep Max Calculator

Estimate maximum weight for one repetition from reps and weight.

Target Heart Rate

Target heart rate zones for exercise intensity based on age and resting HR.

Ideal Weight Calculator

Estimate ideal weight using BMI and clinical formulas plus frame size and current weight comparison.

Pace Calculator

Calculate run pace, speed, and finish time for different distances in kilometers or miles.

Due Date Calculator

The Due Date Calculator estimates the delivery date of a pregnant woman based on her last menstrual period (LMP), ultrasound, conception date, or IVF transfer date.