❤️ Health & Fitness Calculators

BMI, calories, pregnancy and body metrics. 33 free tools.

BMI Calculator

Calculate your Body Mass Index from height and weight and see which category you are in.

BMI body mass index weight

Body Fat Calculator

Estimate body fat percentage with the U.S. Navy circumference method.

body fat body composition navy method

Macro Calculator

Find your daily calories and protein, fat and carb targets by goal and activity.

macros protein carbs

Pregnancy Calculator

Calculate how far along you are, when the baby is due and which trimester you are in.

pregnancy due date gestational age

Pregnancy Conception Calculator

Estimate when conception likely happened from your due date.

conception pregnancy due date

Conception Calculator

Predict your fertile window and ovulation from your cycle.

conception fertility ovulation

Pace Calculator

Convert running or cycling distance and time into pace and speed.

pace running speed

Carbohydrate Calculator

Estimate how many grams of carbohydrates you need each day.

carbs carbohydrate diet

Healthy Weight Calculator

Find a healthy weight range for your height using BMI and common formulas.

healthy weight ideal weight BMI

One Rep Max Calculator

Estimate your one-repetition maximum from a heavy set and get training percentages.

one rep max 1RM strength

Protein Calculator

Estimate your daily protein needs by body weight and goal.

protein diet muscle

TDEE Calculator

Calculate total daily energy expenditure and calorie targets for losing, maintaining or gaining.

TDEE maintenance calories BMR

GFR Calculator

Estimate your glomerular filtration rate (kidney function) from a blood creatinine test.

GFR kidney creatinine

Futurism BMI Calculator

A BMI calculator in the style of the popular Futurism tool, with level classification.

BMI body mass index

Calorie Calculator

Estimate your daily calorie needs for losing, maintaining or gaining weight.

calories weight loss diet

Body Surface Area Calculator

Compute your body surface area with the Mosteller formula.

body surface area BSA medical

Anorexic BMI Calculator

Check a BMI score against the eating-disorder risk threshold.

anorexia BMI underweight

Overweight Calculator

See whether your BMI places you in the overweight or obese categories.

overweight obesity BMI

BMR Calculator

Calculate your basal metabolic rate with Mifflin-St Jeor and Harris-Benedict.

BMR basal metabolic rate calories

Ideal Weight Calculator

Estimate your ideal body weight with several classic formulas.

ideal weight body weight formulas

Pregnancy Weight Gain Calculator

See recommended weight gain ranges for pregnancy based on your starting BMI.

pregnancy weight gain BMI

Due Date Calculator

Estimate your baby\u2019s due date and key pregnancy landmarks.

due date pregnancy baby

Army Body Fat Calculator

Estimate body fat percentage with the US Army tape-measure method.

army body fat tape method

Lean Body Mass Calculator

Split your weight into lean mass and fat mass.

lean body mass LBM body composition

Calories Burned Calculator

Estimate calories burned during exercise by activity, weight and duration.

calories burned exercise MET

Target Heart Rate Calculator

Find your target heart rate zones with the Karvonen formula.

heart rate Karvonen training zones

Fat Intake Calculator

Estimate a daily fat target in grams for your calorie goal.

fat intake fats diet

Ovulation Calculator

Predict your ovulation day and fertile window for planning.

ovulation fertility cycle

Period Calculator

Predict your next periods using cycle length.

period menstrual cycle tracking

Body Type Calculator

Estimate whether you lean toward ectomorph, mesomorph or endomorph from measurements.

body type somatotype measurements

BAC Calculator

Estimate your blood alcohol concentration with the Widmark formula.

BAC alcohol blood alcohol

Weight Watchers Points Calculator

Estimate the points value of a food item with the PointsPlus-style formula.

weight watchers points food

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