male, age 35, 178 cm, 82 kg
- Sedentary TDEE
- 2115 kcal/day
- Moderate TDEE
- 2732 kcal/day
- Formula
- Mifflin-St Jeor
BMR is not a calorie prescription. Compare it with TDEE before planning intake.
BMR Calculator
Use this free BMR calculator to estimate resting daily energy needs from age, formula sex, height, and weight, then compare BMR with simple TDEE context.
Estimate, not diagnosis Formula notes Example inputs Tab-only history
Formula steps
- Multiply weight by 10.
- Multiply height by 6.25, subtract 5 times age, then apply +5 or -161 from the formula sex setting.
- Use BMR as resting energy before activity, work, and daily movement are added.
How to use the BMR Calculator
- Enter the requested measurements, dates, lab values, or workout details.
- Check that the units and formula assumptions match what the tool is asking for.
- Press the calculate button to see the answer, supporting metrics, and formula steps.
- Read the estimate with the health disclaimer in mind, then copy the result if you need it for notes.
What people use it for
Estimate resting energy needs before activity is added.
Separate BMR from TDEE and calorie targets.
Understand how height, weight, age, and formula sex affect the estimate.
Use BMR as the base input for TDEE and calorie planning tools.
Quick examples
Male 1,763 kcal
35-year-old male, 178 cm, 82 kgAbout 1,763 kcal/day BMR
Female 1,329 kcal
29-year-old female, 164 cm, 61 kgAbout 1,329 kcal/day BMR
Moderate TDEE context
1,763 kcal BMR x 1.55About 2,732 kcal/day TDEE
Need the guide or a nearby tool?
Need a slower walkthrough, a related calculator, or the full library? These links keep you close to the task you started.
- How to use the BMR Calculator See slower examples, input meanings, formula notes, result limits, and mistakes to avoid.
- Health & Fitness Browse related calculators and utilities in the same category.
- Calculator and utility guides Find more guides that use real tool inputs and example numbers.
- All free tools Search every live tool, converter, calculator, AI helper, and browser utility.
Frequently asked questions
Plain-language answers about when to use the estimate, what the formula means, what it cannot decide for you, and how privacy works.
When should I use the BMR Calculator?
Use it for simple educational checks, trend tracking, or planning tasks like these: Estimate resting energy needs before activity is added. Separate BMR from TDEE and calorie targets. It can help you understand a number, but it cannot explain your whole health situation.
What do the main BMR Calculator inputs mean?
Enter formula sex, age in years, height in centimeters, and weight in kilograms. The formula sex setting chooses the +5 or -161 Mifflin-St Jeor adjustment; it is a calculator input, not a full description of your body, health, or nutrition needs.
What is the BMR Calculator doing with my inputs?
In plain language: BMR uses the Mifflin-St Jeor equation: 10 x weight kg + 6.25 x height cm - 5 x age + 5 for the male formula setting, or -161 for the female formula setting. Read the result together with the notes on the page, because health and fitness numbers often need personal context.
How should I read the BMR Calculator result?
Read BMR as an estimated resting-energy number in kcal per day. It is lower than total daily needs for most adults because it does not include walking, work, exercise, or daily movement. Use the sedentary and moderate TDEE lines as context before making calorie plans.
Is BMR the same as TDEE?
No. BMR estimates resting energy before activity is added. TDEE estimates total daily energy expenditure after an activity factor is applied. For example, a 1,763 kcal/day BMR becomes about 2,115 kcal/day with the sedentary factor and about 2,732 kcal/day with the moderate factor.
Should I eat exactly my BMR?
Usually no. BMR is a resting-energy estimate, not a meal plan. Most adults burn more than BMR across a full day because movement, work, training, and daily tasks add energy use.
Why does the formula sex setting change the BMR result?
The Mifflin-St Jeor equation uses one adjustment for the male formula setting and another for the female formula setting. That is a formula choice, not a complete judgment about body composition, hormones, health history, or personal nutrition needs.
Can I use this as medical advice?
BMR is an educational resting-energy estimate, not a calorie prescription, medical nutrition plan, pregnancy guideline, or eating-disorder advice. Talk with a qualified health professional before making important nutrition decisions. Use the calculator as a learning tool, then ask a qualified professional about decisions that affect care, pregnancy, medication, nutrition, or safety.
What should I double-check before trusting the result?
Check the units, date, and personal details before reading the answer. For example, pounds and kilograms, inches and centimeters, or a wrong activity level can change the result quickly. If the number feels surprising, rerun it slowly and compare it with the examples.
Does the site save my health inputs?
No. The calculator runs in your browser tab. Recent answers stay only on the page while you use it, and they are not sent to a server.