Question 1

How are the macros calculated?

Accepted Answer

Calories come from Mifflin-St Jeor BMR at your target weight times an activity multiplier — eating at goal-weight maintenance makes the cut implicit. Protein is set in grams per pound of target weight, and carbohydrates and fat split the remaining calories by your chosen ratio.

Question 2

Is macrocalculator.app free?

Accepted Answer

Yes — every calculator is free, with no account, no paywall and no tracking. Your inputs are stored only in the shareable link.

Question 3

How accurate are the estimates?

Accepted Answer

Formulas are population estimates and typically land within about 10% for most people. Use them as a starting point, then adjust from two weeks of real-world scale and performance data.