calorie deficit and muscle loss

Person using a calorie deficit calculator on a tablet with healthy food and measuring tape in the background

Weight Management, Health Tools & Calculators

Calorie Deficit Calculator – Doctor-Verified 2026

Calculate your exact calorie deficit for safe fat loss — not muscle loss. Doctor-verified tool using Mifflin-St Jeor equation. Free, accurate & updated for 2026.

✓ EDUCATIONAL

Written & edited by: Sameer Patel — Founder & Editor Calculators built on published formulas Educational information — not a substitute for medical advice