Macro calculator.
A professional-grade tool for nutritionists and coaches. Enter your client's details to calculate their BMR, TDEE, and optimal macronutrient split in seconds.
Client data
Ready to calculate
Enter your client's details on the left to instantly generate their daily caloric targets and macro split.
How to use the macro calculator for nutrition clients
As a nutrition professional, setting the right baseline for your clients is the foundation of any successful meal plan. This calculator uses the Mifflin-St Jeor equation to estimate Basal Metabolic Rate (BMR) and applies standard activity multipliers to find Total Daily Energy Expenditure (TDEE).
Understanding the formulas
- BMR (Mifflin-St Jeor): the energy expended at rest — one of the most reliable predictive equations for resting energy expenditure.
- TDEE: the total calories your client burns in a day, adjusting BMR for their activity level.
- Macro splits: protein, carbohydrates and fats are adjusted by goal — prioritizing protein for cutting to preserve lean mass, and increasing carbs for bulking to support training.
From macros to meal plans
Calculating the macros is the easy part. The challenge is fitting recipes and foods into those targets to build a full week's plan — and then knowing whether your client actually follows it. That's exactly what MealCircle is for: structured plans that hit the targets, a patient app that logs against them, and a retention board that flags when someone drifts.