← RecompositionRecomposition planning tool

Body Recomposition Calculator: Calories and Protein Range

Start with estimated maintenance and bodyweight to create a restrained calorie range and a transparent protein range.

Updated 21 Oct 2026Reviewed sourcesNo account
Start calculator
Interactive tool

Calculator

Choose your guidance

How much explanation would help?

Pick what feels comfortable. You can change this at any time.

How much explanation would help?
Quick start

Body recomposition means trying to reduce body fat while maintaining or gaining muscle. It usually relies on resistance training, adequate protein, and a modest calorie target.

Show the key terms
Recomposition
Changing the proportion of fat and muscle.
Protein range
A broad daily target based on bodyweight.
Progressive training
Gradually improving repetitions, load, technique, or volume.
Useful context

Use maintenance or a small deficit, then prioritize progressive resistance training and adequate protein.

↳

Enter your details and calculate. The result will appear here.

Your inputs stay in this browser. Anonymous usage events never include input values.

01

Recomposition needs a training signal

Progressive resistance training, adequate protein, sleep, and a modest energy target matter together. Beginners and people returning after a break often have more room to gain muscle while losing fat.

02

Use performance and measurements together

Track training performance, waist or clothing fit, consistent photos, and average bodyweight. One metric can miss meaningful change.

FAQ

Questions, answered plainly

What protein range is used?+

BurnHour shows 1.4–2.0 g per kg of bodyweight, consistent with the ISSN range for most exercising adults.

Should bodyweight stay exactly stable?+

Not necessarily. Recomposition can occur with slow loss, stable weight, or slow gain depending on starting point and goal.

Do I need an account to use the calculator?+

No. The web calculators are free and run in your browser without an account.

Sources and further reading

Sources behind the formulas and explanations.

  1. Mifflin–St Jeor original equation
  2. ISSN position stand on protein and exercise
App preview · iOS coming soon

Your next hour, at a glance.

A look at what’s planned for BurnHour Fasting. The iOS app is in development.

Design previewYOUR FASTING WINDOW12h 24m

Elapsed of a 16-hour fast

Eating window · 12:00 PM–8:00 PM

Be first to hear when it launches