17 Fit Calculators
Fitness calculators calories, weight, body fat, water, steps and fasting
Free calculators for the questions people ask most about food and weight. Each one explains how it works, and most use the same arithmetic as the 17 Fit app.
Calories and energy
How much to eat, how much you burn, and when you’ll reach your goal.
- Calorie calculator Daily calories for weight loss, maintenance or muscle, with macros.
- BMR calculator Basal metabolic rate by three formulas, and your TDEE.
- Calorie deficit calculator Your calories for weight loss and when you’ll reach your goal.
- Protein calculator How much protein you need a day, per meal and in real food.
Your body
Your weight, your body fat and the range that’s healthy for your height.
Food and recipes
The calories and nutrients of each food, a whole recipe counted at once, kilojoules in kilocalories, and how to bring your diary over from another app.
- Food calories Calories, macros, vitamins and minerals in each food.
- Recipe calorie calculator The calories of a dish from its ingredients, per serving and per 100 g.
- kJ to kcal converter Kilojoules to kilocalories and back, and why labels differ.
- Move your diary Bring your diary over from MyFitnessPal, FatSecret or Yazio.
Who they’re not for
The calculators are for healthy adults, and every figure is an estimate, not medical advice. Pregnant and breastfeeding women, children and teenagers, people with an eating disorder and anyone with a medical condition should work out their numbers with a doctor. That’s why there are no pregnancy calculators here.
17 Fit
One app for all of it
17 Fit counts calories from a photo of your plate and keeps your plan, water, steps, weight and fasting in one place.
- Calories and macros from a photo of your plate
- A plan that adjusts to your weight every week
- Free food diary, no sign-up and no ads
