BMR Calculator
Calculate Basal Metabolic Rate (BMR) online instantly. Estimate daily calorie needs based on age, gender, height and weight.
Last updated: 2026-05-20
Free Online BMR Calculator
Use this free online bmr calculator tool directly in your browser without installing software. Fast, mobile friendly and easy to use.
BMR Calculator
Activity Levels
| Activity Level | Description |
|---|---|
| Sedentary | Little or no exercise |
| Lightly Active | Exercise 1-3 days/week |
| Moderately Active | Exercise 3-5 days/week |
| Very Active | Exercise 6-7 days/week |
About BMR
BMR estimates the calories your body needs to maintain essential functions while at rest. Actual calorie needs may vary depending on lifestyle and health conditions.
Related Tools
BMI Calculator
Calculate Body Mass Index (BMI) online instantly. Check BMI category based on height and weight easily.
Body Fat Calculator
Estimate body fat with the U.S. Navy circumference method.
Macro Calculator
Estimate maintenance calories and macronutrient targets from basic measurements.
Ovulation Calculator
Calculate ovulation date and fertile window online instantly. Estimate your most fertile days and next ovulation easily.
About This Tool
About BMR Calculator
This free online BMR Calculator helps you estimate your Basal Metabolic Rate (BMR) based on age, gender, height and weight.
BMR represents the number of calories your body needs each day to maintain basic life-supporting functions at rest.
What This Tool Calculates
- Basal Metabolic Rate (BMR)
- Estimated daily calorie needs
- Maintenance calorie estimate
- Activity-based calorie calculation
- Metabolism estimation
Frequently Asked Questions
What is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body burns while at complete rest.
How is BMR calculated?
This tool uses the Mifflin-St Jeor Equation based on gender, age, height and weight.
What affects BMR?
Age, gender, height, weight and muscle mass can affect BMR values.
Is this BMR Calculator free?
Yes. This tool is completely free to use online.
Popular Tools
Advanced Home Loan EMI Calculator
Calculate home loan EMI, amortization schedule, prepayments, taxes, insurance and repayment breakdown online instantly.
Aesthetic Text Generator
Convert basic Latin text into a cursive Unicode style.
Age Calculator
Calculate exact age online from date of birth. Find age in years, months, days, weeks and hours instantly.
AGE ON Date Calculator
A browser-based AGE ON Date Calculator for practical validation, conversion, preview, and calculation tasks.
AIM Trainer
Test AIM Trainer using browser APIs. Processing stays on your device.
Ambient Sound Generator
A free browser-based ambient sound generator with practical controls, local processing, and clear downloadable or copyable results.