1
Set realistic nutrition or body-composition targets based on measurable inputs.
Fitness & Health
Estimate basal metabolic rate using the Mifflin–St. Jeor equation to approximate calories burned at rest.
Premium calculator layout
Formula and step-by-step support
Goal-planning friendly
Basal metabolic rate estimate from body metrics.
Copy the visible result or download a quick PDF summary.
Better results
Use cases
Set realistic nutrition or body-composition targets based on measurable inputs.
Compare different goals such as maintenance, fat loss, or performance support.
Turn body metrics into a repeatable weekly check-in system.
Manual method
Use this quick framework when you want to verify the result by hand or explain the process to someone else.
Step 1
Enter body measurements and choose one unit system before doing any math.
Step 2
Convert height, weight, or activity values into the formula units when needed.
Step 3
Apply the main equation and keep at least one extra decimal during intermediate steps.
Step 4
Interpret the output using the guidance range shown with the result.
FAQ
Quick answers that make the result easier to trust, compare, and apply.
Use the number as a planning signal, not as a complete health diagnosis. The surrounding ranges, formulas, and explanation help you place the result in context.
Yes, especially when weight, activity level, body measurements, or training goals change. Tracking a trend is usually more useful than looking at one single result.
Estimate basal metabolic rate using the Mifflin–St. Jeor equation to approximate calories burned at rest. The result is designed to make the core number easier to understand with formulas, context, and supporting detail.
It is accurate for the inputs and formula it uses, but accuracy still depends on entering correct values, choosing the right units, and matching the calculator to your real-world scenario.
Yes. The layout is optimized for phones and tablets so you can enter values, review the formula, and compare results on smaller screens.
Jump to nearby tools in the same workflow, compare scenarios, or validate the numbers from a different angle.
Body mass index with ranges, chart, and healthy-weight context.
Estimate daily calorie needs based on goals.
Total daily energy expenditure with activity levels.
Estimate body fat percentage using body measurements.
Split calories into protein, carbs, and fat targets.
Recommended daily protein intake guidance.