BMR Calculator
Estimate basal metabolic rate using the Mifflin-St Jeor equation.
Calculator updated
Use this page to get a quick answer, then check the formula and example before making an important decision.
- The main result from your inputs
- Formula used for the calculation
- Worked example and common mistakes
- Related calculators for the next step
Formula
BMR estimates calories burned at rest.
A 30-year-old male, 70 kg, 175 cm has BMR around 1,649 kcal/day.
Enter the measurements requested by the form and apply BMR estimates calories burned at rest.. Use consistent measurement conditions when comparing results over time.
Use the BMR Calculator as a general wellness or fitness estimate. It is not a diagnosis and should not replace professional medical advice.
Common health-calculation errors include inaccurate measurements, changing measurement conditions between checks, treating population formulas as diagnoses, and over-interpreting small differences.
Examples
Inputs
Sex used in equation, Age, Weight (kg), Height (cm)
Keep units and time periods consistent.Formula
BMR estimates calories burned at rest.
Use the formula to verify the result.What the result means
Estimate basal metabolic rate using the Mifflin-St Jeor equation.
Change one input at a time to compare scenarios.How to Calculate BMR Manually
Start with the values requested in the form, keep the units consistent, and apply this formula: BMR estimates calories burned at rest.
The calculator above follows the same logic, then formats the answer so you can quickly compare inputs, copy the result, and check the related tools if your task has another step.
When to Use This Calculator
- Track a general wellness estimate
- Compare measurements over time
- Support fitness planning
- Prepare questions for a qualified professional
How It Works
- Enter Sex used in equation, Age, Weight (kg), Height (cm).
- Use accurate, consistently taken measurements.
- Review the result as an estimate and read any limitations on the page.
Common Mistakes
- Using inaccurate measurements
- Changing measurement conditions
- Treating an estimate as a diagnosis
- Over-interpreting small changes
Related Calculators
More Calories & nutrition tools
Continue the same workflow with closely related calculators.
Frequently Asked Questions
What does the BMR Calculator do?
Estimate basal metabolic rate using the Mifflin-St Jeor equation.
Is this result an estimate?
Yes. The calculator follows the formula shown on the page. Verify important decisions with a qualified professional where needed.
Can I use this on mobile?
Yes. The calculator is designed to work on phones, tablets, and desktop screens.