BMR Calculator
Estimate basal metabolic rate using the Mifflin–St Jeor equation.
FreeNo signupRuns in your browser
Enter your values
How to use BMR Calculator
- Enter Sex used by equation, Units, Age, Weight, Height.
- Choose the options that match your task and leave genuinely optional fields blank when they do not apply.
- Select Calculate / Run and review the result panel.
- Check units, assumptions and any limitations shown on the page before using the result for an important decision.
About this tool
Estimate basal metabolic rate using the Mifflin–St Jeor equation. Use the form above to enter Sex used by equation, Units, Age, Weight, Height. The calculation or transformation runs locally in your browser.
Method
BMR uses the Mifflin–St Jeor equation based on age, sex used by the equation, height and weight.
This tool provides a general estimate only and is not medical advice, diagnosis or treatment.
Frequently asked questions
What does BMR Calculator do?
Estimate basal metabolic rate using the Mifflin–St Jeor equation.
What information do I need?
The form is built around these inputs: Sex used by equation, Units, Age, Weight, Height.
Does my input get uploaded?
For this tool, the calculation or transformation runs in your browser. Your entered values are not intentionally sent to ToolboxKart for processing.
Is this tool free to use?
Yes. You can use this ToolboxKart tool without creating an account.