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Health

BMR Calculator

Estimate basal metabolic rate from age, height, weight, and sex.

Last Updated: 2026-06-13

Reviewed By: DTECALC Editorial Team

Method: BMR Calculator uses structured inputs and calculator-specific formulas to estimate a health result. Outputs should be interpreted together with your assumptions, data quality, and any fees, taxes, or external constraints that apply.

Calculator Widget

BMR Calculator

Estimate basal metabolic rate from age, height, weight, and sex.

Min 15 / Max 120 / Unit years

Min 30 / Max 300 / Unit kg

Min 100 / Max 250 / Unit cm

Introduction

What Is the BMR Calculator?

BMR Calculator helps you estimate basal metabolic rate from age, height, weight, and sex..

BMR Calculator is a free health tool for fast, transparent estimates. It combines the calculator widget with formula notes, examples, and FAQs so users can both get an answer and understand what is driving it.

Formula Explanation

BMR ~= energy formula based on age, sex, height, and weight

This tool uses the following working formula or method: BMR ~= energy formula based on age, sex, height, and weight. Use the result together with your assumptions, units, rates, and time period because small input changes can materially affect the output.

How It Works

  1. Enter the required values into the calculator fields.
  2. Check that units, rates, dates, or amounts match your real scenario.
  3. Review the calculated result and compare it with at least one alternative scenario.
  4. Use the supporting explanation to understand how the health estimate was produced.

Common Uses

Examples

For example, you can use BMR Calculator with one realistic set of inputs first, then adjust the biggest variables to compare best-case, expected, and cautious scenarios before making a decision.

Estimate a health outcome before committing to a plan.

DTECALC keeps the formula visible so you can understand how the calculator result is produced.

Compare multiple scenarios with different assumptions.

DTECALC keeps the formula visible so you can understand how the calculator result is produced.

Understand the key variables behind the final result instead of treating the output like a black box.

DTECALC keeps the formula visible so you can understand how the calculator result is produced.

FAQ

About the BMR Calculator

BMR Calculator helps you estimate basal metabolic rate from age, height, weight, and sex..

Is BMR Calculator free to use?

Yes. BMR Calculator is part of the free DTECALC calculator library.

What information do I need for BMR Calculator?

Enter the values requested by the calculator and make sure the units, rates, dates, or amounts match your health scenario.

Should I rely on one result only?

Usually no. It is better to compare a few scenarios and verify assumptions before using the result for an important decision.