How much should I eat?

CALORIE CALCULATOR

Meal inspiration isn't just about telling you what you should eat to achieve your fitness goals, but more importantly how much you need to eat.

In simple terms, calories are the amount of energy stored in an item of food and drink. If we take in more calories than we burn, we store it as fats and put on weight. If we can achieve a calorie deficit, the body will burn fat and we will lose weight.

Calorie deficits do not come from starving the body. It must be achieved through eating right and exercising well. Use our calorie calculator to work out the perfect number for your calorie intake so that you can plan meals around your fitness targets.

The Calorie Calculator is based on the Mifflin-St Jeor Equation which calculates basal metabolic rate (BMR), and its results are based on an estimated average. The basal metabolic rate is the amount of energy expended per day at rest.

For men:
BMR = 10 × weight (kg) + 6.25 × height (cm) - 5 × age (y) + 5

For women:
BMR = 10 × weight (kg) + 6.25 × height (cm) - 5 × age (y) - 161

Note: accurate determination of the calories you burn can only be accomplished by individual physiological testing.

Calorie Calculator

perks of being a member

loads of great recipes at your fingertips

As a BTBY member you will have access to our full library of easy to follow meal inspiration. Each recipe comes with a simple step-by-step method, ingredients list and all the calorie information you need to help you eat well and support your training goals.

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Choosing the right fitness plan is step one. We’ve created two awesome plans to help you achieve your individual goals. Below we also explain exactly what you can expect from your membership

Easy-to-follow 12 week training plans
Customised workouts with exercise tutorial videos
Discover great recipes
Training tips and nutrition advice
Weekly Blogs on all things fitness

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