BMR Calculator (Basal Metabolic Rate) – Online Free 2025
This BMR calculator estimates the calories your body burns at rest. Use your BMR → TDEE → deficit flow: first calculate BMR, then get TDEE, then set a target in the calorie deficit calculator.
BMR Calculator
Enter sex, age, height, weight, press Calculate BMR
How it works
- Mifflin–St Jeor is the default for BMR estimation.
- “Estimate daily burn with the TDEE calculator”
- “Then set a goal in the calorie deficit calculator”
- “Set macros for weight loss”
Know your baseline energy so every goal starts with solid numbers.
Enter age, sex, height, and weight to get your resting calories and next steps.
Ready to set targets? Use our BMR Calculator and turn numbers into an action plan.
Learn how a safe deficit works in the CDC’s Healthy Weight guide and check recommended activity levels from the WHO.
