The Diet Tools section comprises useful calculators to help you reach your weight loss goals. Work out how many calories you need each day, or how much water you should be drinking for example.


Use our diet calculators to aid your weight loss goals

See the current list of flat belly calculators below, and try them out.

Activity Calorie Burn Calculator

Want to find out how many calories you burn if you’re doing a particular sport or other everyday activity? The activity calorie burning calculator will tell you!

Body Fat Percentage Calculator

Use this calculator to figure out your body fat percentage. Body fat percentage is simply the percentage of fat that your body contains.

Body Mass Index (BMI) Calculator

A good way to determine if your weight is healthy for your height is to calculate your body mass index (BMI).

Calories Burned by Walking Calculator

Walking is one of the best and easiest ways to burn calories and lose weight. You can find out how many calories you actually burn with this calculator.

Calories You Need Per Day Calculator

This daily calorie calculator gives an approximation of your Basal Metabolic Rate (or BMR for short) – the number of calories you need to eat per day based on your height, weight and level of physical activity.

Daily Water Intake Calculator

How much water should you drink every day? Find out with this daily water intake calculator.

Ideal Weight Calculator

What is the ideal weight for your height? Use this calculator to find out.

Pounds to Kilograms Weight Converter

Want to know what your weight in kilgrams is in pounds or vice versa? Use our simple weight conversion calculator to find out.