TotalNumbers

Health

BMR Calculator

Estimate basal metabolic rate and daily energy needs.

Calculator inputs

Adjust values to update the estimate.

kg

cm

Health estimate

BMR

1,427 kcal/day

Estimated daily maintenance with activity is about 1,961 kcal/day.

Maintenance estimate

1,961 kcal

Activity calories

535 kcal

Activity multiplier

1.375

Use this as a broad estimate only. Personal metabolism, health status, medications, and training can change energy needs.

Resting estimate1,427 kcal
Activity adjustment535 kcal
Daily estimate1,961 kcal

How This Calculator Works

Use this bmr tool for quick estimation, comparison, and planning intent while keeping formula assumptions visible.

Use the BMR calculator to estimate resting energy needs and a rough daily calorie target based on activity level.

The calculator uses the Mifflin-St Jeor equation and multiplies the result by your activity factor.

Formula

BMR = 10 x weight kg + 6.25 x height cm - 5 x age + sex adjustment. TDEE = BMR x activity.

Example Calculation

A 35-year-old, 70 kg, 170 cm female profile estimates about 1,430 kcal/day BMR before activity.

When to Use This Calculator

  • Estimate maintenance calories
  • Compare activity assumptions
  • Support conversations with a qualified professional

Practical Scenarios

  • Use the BMR Calculator to estimate maintenance calories while comparing at least one conservative and one higher-cost scenario.
  • Use the BMR Calculator to compare activity assumptions while comparing at least one conservative and one higher-cost scenario.
  • Use the BMR Calculator to support conversations with a qualified professional while comparing at least one conservative and one higher-cost scenario.

Tips

  • Activity multipliers are rough
  • Do not use BMR as a diet prescription
  • Health needs vary by person

Common Mistakes

  • Treating BMR as total daily needs
  • Using activity multipliers too aggressively
  • Ignoring medical context
  • Using a best-case input when a realistic range would be safer.
  • Forgetting fees, taxes, inflation, usage changes, or other hidden costs where they apply.

Assumptions and Limitations

The BMR Calculator is most accurate when the inputs match current real-world numbers and when you review the formula, assumptions, and related calculators before acting.

  • Age, medical history, body composition, medication, training status, and personal context can change what the result means.
  • The result is informational and is not medical advice, diagnosis, or treatment.
  • Use health estimates as a starting point for discussion with a qualified professional when needed.
BMRTDEEcaloriesmetabolismhealthhealth estimatepersonal contexttracking accuracy

Recommended Next Calculators

Calorie Deficit

Estimate daily calorie deficit and weekly weight-change pace.

Fitness

BMI

Estimate body mass index from height and weight.

Health

Percentage

Calculate percentages, increases, decreases, and simple percentage totals.

Finance

Related Guides

Best Free Online Calculators for Everyday DecisionsA practical guide to choosing free online calculators for money, business, health, travel, tech, and everyday planning.How Calorie Deficits Actually WorkHow calorie deficits, energy estimates, body composition, and training context fit together.How Protein Intake Affects Muscle GrowthHow protein targets, calories, training, hydration, and body composition estimates fit together.

Frequently Asked Questions

Is the BMR result exact?+

It is an estimate based on the inputs you enter. Real-world fees, policies, taxes, timing, and provider rules can change the final number.

Can I use the BMR calculator on mobile?+

Yes. TotalNumbers calculators are designed for mobile, tablet, and desktop screens.

How accurate is the BMR Calculator?+

The BMR Calculator is an estimate based on the inputs you provide. Accuracy improves when you use current numbers and review the formula, fees, taxes, timing, and assumptions that apply to your situation.

What inputs does the BMR Calculator use?+

This calculator uses inputs such as formula profile, weight, height, age, and related assumptions to estimate the result.

What should I check before relying on this bmr estimate?+

Check current rates, fees, policies, taxes, usage, and any personal or local factors that could change the final number. For important decisions, verify the result with an official quote or qualified professional.

Disclaimer

This health calculator is informational only and is not medical advice, diagnosis, or treatment. Speak with a qualified healthcare professional about personal health decisions.

Last updated: 2026-05-22