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Health & Fitness

BMR Calculator

Estimate resting daily energy expenditure. Enter your details below to get an immediate estimate and review exactly how it is calculated.

Free Calculator📅 Updated for 2026⚡ Instant results

Inputs

70 kg
kg
175 cm
cm
35

Estimated calories/day

1,623.75

Calculation method

Uses the Mifflin–St Jeor equation with the selected sex coefficient.

Formula bmr, version 1.0.0
YOUR RESULT, IN CONTEXT

Understand your result

Health formulas are population-level screening tools. They can support a conversation, but they cannot describe every person or replace individualized medical guidance.

∑ Methodology

Uses the Mifflin–St Jeor equation with the selected sex coefficient.

bmr

Formula version 1.0.0. The estimate represents calories used at rest before activity.

Review the source and method   →Reviewed 2026-07-28 by CalculateBetter editorial team.

✓ Assumptions and limitations

  • For adults only.
  • Individual metabolism can differ materially.

This calculator provides an educational estimate. Real-world outcomes can vary when circumstances or inputs change.

Key terms explained

⚖ Weight
Body weight used by the selected formula.
↕ Height
Body height used by the selected formula.
◷ Age
Age in completed years used by the estimate.
◐ Sex used by the formula
The formula coefficient selected for the estimate.

BUILT FOR CLARITY

What makes it different

01

⚖ Compare scenarios

Keep Scenario A and Scenario B visible so rate, term, and contribution changes are easy to compare.

02

↗ Results, visualized

See how the estimate changes over time, with a detailed breakdown when the calculation supports it.

03

⇧ One-click exports

Copy a shareable link or download your calculation as CSV or PDF.

HOW TO USE IT

▤ From inputs to a decision you can use

Start with the figures you know today, then change one assumption at a time. This makes it easy to see which input has the greatest effect on the result.

  1. 1Enter the requested bmr calculator values using the units shown beside each field.
  2. 2Check the headline result, then review the supporting values to understand what contributes to it.
  3. 3Change one input at a time and use Scenario B to see which assumption has the greatest effect.
  4. 4Save a shareable link or export CSV and PDF files when you want to keep a record.
Practical tip

Use realistic values first, then create a second scenario for the best- or worst-case outcome. Compare the difference before relying on a single estimate.

THE MATH BEHIND IT

▦ Formula, variables, and interpretation

Uses the Mifflin–St Jeor equation with the selected sex coefficient.

The estimate represents calories used at rest before activity.
Worked interpretation

The estimate represents calories used at rest before activity.

How to read the result: The headline value is an estimate based on constant inputs. Real-world rates, fees, taxes, payment timing, and rounding can change the final amount.

BMR Calculator FAQ

How accurate is this bmr calculator?+

The result follows the formula and assumptions shown on this page. It is an estimate, so actual outcomes may differ when rates, fees, taxes, or personal circumstances change.

Can I save or share my calculation?+

Yes. Copy the calculation link to preserve the entered values, save it on this device, or export the result as CSV or PDF.

Which values should I enter?+

Start with values that reflect your circumstances today. If an input is uncertain, calculate a conservative and an optimistic scenario so the result becomes a useful planning range.

What is not included in the result?+

Only the inputs, formula and assumptions listed on this page are included. External costs, changing conditions, personal eligibility rules and professional judgment may affect a real-world outcome.

Reviewed for clarityReviewed by CalculateBetter editorial team
Updated 2026-07-28

Transparent sourcesU.S. CDC — Healthy Weight and BMI
Formula version 1.0.0

ImportantFor planning and educational use. It does not replace professional advice.

Your privacy mattersYour figures stay in your browser and are not submitted to CalculateBetter.

Disclaimer: Calculations are for informational purposes only and do not constitute professional financial advice. Please consult with a certified professional before making financial decisions.