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Fitness & HealthVerified logic

BMR Calculator

Estimate basal metabolic rate with the Mifflin-St Jeor equation.

BMR Calculator Inputs

Results computed instantly — your data never leaves your device.

Live BMR Calculator Results

Real-Time

Estimated BMR (kcal/day)

1648.75

Results computed instantly — your data never leaves your device.

Reference / Secondary

1483.88

Weight

70 kg

100% Client-SidePrivate & Secure

How to Use the BMR Calculator

  1. 1

    Enter weight, height, age, and the tool-specific assumption.

  2. 2

    Confirm units.

  3. 3

    Review the live result.

  4. 4

    Use the estimate as educational guidance and discuss consequential decisions with a professional.

Formula & Mathematical Basis

BMR = 10×weight(kg) + 6.25×height(cm) − 5×age + 5 (male reference equation).

Variable Key

Inputs

User-entered body measurements and nutrition assumptions

📝 Equation output is an estimate and non-finite values are guarded.

Step-by-Step Examples

1

Worked example

Scenario: Use a valid adult profile and the displayed defaults.

  1. 1.Enter measurements.
  2. 2.Apply the equation.
  3. 3.Review the primary output.
  4. 4.Compare the reference output.
✅ The result updates in the browser.

Practical Use Cases

  • ✓ Nutrition planning context.
  • ✓ Comparing activity assumptions.
  • ✓ Educational estimation.

Common Pitfalls

  • ⚠ Mixing kilograms and pounds.
  • ⚠ Mixing centimetres and metres.
  • ⚠ Treating estimates as medical advice.

Frequently Asked Questions

Are calculations client-side?

Yes.

Can inputs be changed?

Yes, results recalculate instantly.

Does this diagnose or prescribe?

No.

Are results exact?

They are estimates based on the stated equation and assumptions.

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