Calculators to help you lose weight
25 tools matched to this goal.
BMI Calculator
Body mass index from height and weight, with your healthy weight range.
Body Fat Calculator (US Navy)
Estimate body fat percentage from tape measurements.
Ideal Weight Calculator
Compare ideal weight from four classic formulas.
Lean Body Mass Calculator
Split your weight into lean mass and fat mass.
Waist-to-Hip Ratio Calculator
Check where your body stores fat and the related health risk.
Waist-to-Height Ratio Calculator
A simple rule: keep your waist under half your height.
Body Roundness Index Calculator
A shape-based index of visceral fat from waist and height.
BMI Prime & Ponderal Index
How far your BMI sits from the upper healthy limit of 25.
Body Frame Size Calculator
Small, medium or large frame from height and wrist size.
BMR Calculator
Calories your body burns at complete rest.
TDEE & Daily Calorie Calculator
Total daily energy expenditure at each activity level.
Weight Loss Timeline Calculator
How long to reach a goal weight at your calorie intake.
Macro Calculator
Protein, carb and fat grams for your calorie target.
Protein Intake Calculator
Daily protein range for your weight and goal.
Added Sugar Limit Calculator
Compare your sugar intake with WHO and AHA limits.
Meal Calorie Planner
Divide daily calories across your meals and snacks.
Target Heart Rate Calculator
Heart rate training zones using the Karvonen method.
Calories Burned Running Calculator
Calories burned for a run of any distance.
Steps to Calories Calculator
Convert your daily steps to distance and calories.
Cycling Calories Calculator
Calories burned cycling by speed and time.
Calories Burned by Activity
Compare calories burned across ten activities.
HOMA-IR Calculator
Insulin resistance estimated from fasting glucose and insulin.
Alcohol Units & Calories Calculator
Weekly alcohol units and calories from your drinks.
Daily Step Goal Planner
Build up your steps gradually toward a goal.
Alcohol-Free Savings Calculator
Money, calories and units avoided since you stopped.
Other goals
- Lose weight
- Build muscle
- Eat better
- Get fitter
- Protect my heart
- Manage blood sugar
- Pregnancy & fertility
- Care for my child
- Sleep better
- Mental wellbeing
- Cut back on drink, smoke & caffeine
- Understand my lab results
Related guides
What Is BMI and What Does It Really Tell You?
BMI is a quick screening number. Here is what it measures, where it falls short and how to use it sensibly.
Weight & Body CompositionHow to Find a Healthy Weight Range for Your Height
There is no single perfect weight. Learn how clinicians use ranges and several formulas.
Weight & Body CompositionBody Fat Percentage Explained
What counts as lean, average or high body fat, and how to estimate yours at home.