MasterTool

BMR Calculator

Estimate bmr from your measurements.

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What this tool does

Estimate bmr from your measurements. Adult equation only; not appropriate for children, pregnancy, illness or clinical nutrition without professional guidance.

How to use the BMR Calculator

  1. Enter or select body weight in lb.
  2. Enter or select height in in.
  3. Enter or select age (years).
  4. Enter or select equation sex coefficient.
  5. Enter or select activity multiplier.
  6. Read the calculated result; change any measurement to compare alternatives.

Formula

Mifflin-St Jeor BMR=10×kg+6.25×cm−5×age+sex coefficient; TDEE=BMR×activity; protein/carb grams=kcal share/4; fat grams=kcal share/9
weight
Body weight (lb, before metric conversion)
height
Height (in, before metric conversion)
age
Age (years)
sex
Equation sex coefficient
activity
Activity multiplier

Adult equation only; not appropriate for children, pregnancy, illness or clinical nutrition without professional guidance.

Worked example

For bmr calculator, the following measurements illustrate the exact method: Body weight: 150; Height: 67; Age (years): 30; Equation sex coefficient: male; Activity multiplier: 1.55.

Inputs

  • Body weight150 lb
  • Height67 in
  • Age (years)30
  • Equation sex coefficientMale (+5)
  • Activity multiplier1.55

Result

  • BMR (kcal/day)1,599.01

Results explained

BMR (kcal/day)
BMR (kcal/day) from the formula above. Adult equation only; not appropriate for children, pregnancy, illness or clinical nutrition without professional guidance.

Frequently asked questions

Mifflin-St Jeor BMR=10×kg+6.25×cm−5×age+sex coefficient; TDEE=BMR×activity; protein/carb grams=kcal share/4; fat grams=kcal share/9

Adult equation only; not appropriate for children, pregnancy, illness or clinical nutrition without professional guidance.

No. These are general-information estimates, not diagnosis, treatment, fertility advice or exercise clearance. Consult a qualified health professional.

Individual physiology, measurement technique and health conditions may cause large differences from model estimates.

No. BAC estimates never establish that driving is safe or legal; do not drive after drinking.