Free Health & Fitness Calculators
BMR, TDEE, macros and body metrics — no account needed, no data collected
Private by design — everything is calculated on your device, nothing is storedMetabolism
TDEE Calculator
Your total daily energy expenditure.
BMR Calculator
Calories your body burns at rest.
Female TDEE Calculator
TDEE with female defaults.
Male TDEE Calculator
TDEE with male defaults.
BMR Calculator (Mifflin-St Jeor)
The modern standard BMR formula.
Harris-Benedict Calculator
The classic 1919 BMR formula.
Katch-McArdle Calculator
BMR from lean mass, not total weight.
RMR Calculator
Resting metabolic rate.
Metabolic Rate Calculator
Your baseline metabolic rate.
Macros & Diet
Macro Calculator
Split calories into protein, carbs and fat.
Keto Macro Calculator
Macros for a ketogenic (high-fat) diet.
Bulking Macro Calculator
Eat to build muscle with a surplus.
Cutting Macro Calculator
Eat to lose fat while keeping muscle.
Vegan Macro Calculator
Plant-based macro split.
Protein Calculator
Daily protein from your weight.
Protein Intake Calculator
How much protein you should eat.
Carbs Calculator
Grams of carbs from a calorie target.
Fat Intake Calculator
Grams of fat from a calorie target.
Macro Split Calculator
Divide calories into macro grams.
IIFYM Calculator
If It Fits Your Macros, made simple.
Flexible Dieting Calculator
Macro targets for flexible eating.
Lean Bulk Calculator
Build muscle without excess fat.
Recomp Calculator
Body recomposition: keep weight, change composition.
Calories & Weight
Calorie Deficit Calculator
Find your daily intake to lose weight.
Calorie Calculator for Weight Loss
Intake to hit a weekly loss goal.
Calorie Calculator for Weight Gain
Intake to hit a weekly gain goal.
Maintenance Calorie Calculator
The calories that hold your weight.
Calorie Deficit Calculator (kg)
Deficit and weekly loss in kilograms.
Calorie Deficit Calculator (lbs)
Deficit and weekly loss in pounds.
Reverse Dieting Calculator
Raise calories without rebounding fat.
Calorie Maintenance Calculator (Female)
Female maintenance calories.
Calorie Maintenance Calculator (Male)
Male maintenance calories.
Body Composition
Body Fat Calculator
Estimate body fat from measurements.
BMI Calculator
A quick screen from weight and height.
Ideal Weight Calculator
A heuristic healthy weight range.
Body Fat Percentage Calculator
Your estimated body-fat percentage.
Lean Body Mass Calculator
The muscle-and-organ part of your weight.
Ratios
Waist to Height Ratio Calculator
A simple health-risk screen.
Waist to Hip Ratio Calculator
Fat distribution risk marker.