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Assess your push-up performance based on completed repetitions and test duration. Get a clear, easy-to-understand result using a transparent calculation method.

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Push-Up Test Performance

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Completed Repetitions30 reps
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Additional Seconds30 sec
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Updated 12 Aug 2026Free Push-Up Test Calculator

Nutrition & Energy calculator

BMR Calculator

Estimate the energy an adult body uses at rest with the documented Mifflin–St Jeor equation.

Method reviewedUpdated 12 Aug 2026

Calculate with BMR Calculator

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Complete the fields and calculate. Your inputs stay on this device.

Purpose and context

What does the BMR Calculator do?

Basal or resting metabolic rate represents energy used to maintain essential functions at rest. Predictive equations provide population-based estimates rather than laboratory measurements.

Who it supports: Adults represented by the published equation categories.

Transparent calculation

Formula and calculation method

RMR = 10W + 6.25H − 5A + S; S is +5 for the male equation and −161 for the female equation

Weight is normalized to kilograms and height to centimetres before applying the 1990 Mifflin–St Jeor equation. Calories are rounded to a whole number for display.

Primary keywordBMR calculator
Result typeCalculator-specific result
Published
Last reviewed

Worked calculation example

For a 30-year-old using the male equation at 75 kg and 180 cm: 750 + 1,125 − 150 + 5 = 1,730 kcal/day.

The live calculator retains greater internal precision and rounds only when presenting the result.

How to use the BMR Calculator

  1. Select the published equation category.
  2. Enter age, height and weight.
  3. Calculate resting energy and review the assumptions.
  4. Use the TDEE calculator when activity needs to be included.

Understanding your result

The result card identifies the value, unit, method, supporting values and an accuracy notice. Estimated and predicted outputs are labelled so that apparent precision is not mistaken for certainty.

Continue with the TDEE Calculator for a related measurement using its own documented method.

Accuracy, assumptions and limitations

Body composition, illness, pregnancy, medications, adaptive metabolism and measurement error can cause actual resting expenditure to differ.

Common input and interpretation mistakes

  • Calling predicted BMR a measured laboratory result.
  • Using BMR as total daily calorie expenditure.
  • Entering mixed units after selecting a unit system.

Primary method source: https://pubmed.ncbi.nlm.nih.gov/2305711/.

Fitness Goal 4U provides general informational calculations and does not replace medical assessment, diagnosis, treatment or individualized advice from an appropriately qualified professional.

Frequently asked questions about BMR Calculator

BMR is the energy used for essential body functions at rest. This calculator predicts it from population data.

Yes. Age is an explicit term in the Mifflin–St Jeor equation and generally lowers the prediction as age increases.

It can affect real resting expenditure, but this general equation does not directly use lean mass.

BMR estimates resting energy; TDEE combines a resting estimate with an activity model.

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