BMR Calculator
Calculate resting calorie burn based on age, gender, height, and weight.
Calculate resting calorie burn based on age, gender, height, and weight.
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Estimate resting calorie burn from age, height, weight, and gender.
Most trusted baseline
Daily BMR
1,379 kcal
Hourly baseline
59 kcal/hour
Published in 1990, the Mifflin-St Jeor equation is favoured by dietitians for its accuracy with modern body compositions. Wellness teams lean on it during onboarding so it delivers a defensible starting point for calorie and recovery planning.
Your inputs
A clean snapshot of the numbers powering today's basal metabolic estimate.
Determines which metabolic constants shape the calorie estimate.
Age adjusts for gradual metabolic shifts over a lifetime.
Stature influences lean mass projections inside each formula.
Current body weight anchors the baseline burn before activity add-ons.
Blends the supported equations to show a stable daily requirement.
Helpful for pacing snacks, sleep, and fasting windows.
Normalizes the estimate so you can compare across weight changes.
Shows the spread between historic and modern metabolic models.
Coaching tip
Record weigh-ins at the same time of day and re-check height yearly to keep comparisons fair.
Formulas appear from most-referenced to secondary guidance. Use the descriptions to decide which assumption aligns with medical notes or coaching protocols.
Mifflin-St Jeor equation
Popularity rank #1
Published in 1990, the Mifflin-St Jeor equation is favoured by dietitians for its accuracy with modern body compositions.
Revised Harris-Benedict
Popularity rank #2
The 1984 Harris-Benedict revision underpins many hospital nutrition protocols and is a reliable cross-check when lean mass data is limited.
This tool is for informational purposes only and should not be considered professional advice. Always blend the numbers with medical history, lab work, and clinician guidance.
The BMR calculator gives coaches, clinicians, and busy households an instant view of how many calories their bodies burn at rest using the most cited formulas. It serves as the foundational number for any nutrition plan, whether the goal is weight loss, muscle gain, or metabolic health recovery.
Dual-unit entry panels keep kilograms, pounds, and centimetres in sync so you can grab measurements from any scale without rekeying conversions. This flexibility ensures that whether you are reading a medical chart or a gym scale, you can enter data quickly and accurately.
Use the paired outputs to brief dietitians, adjust training loads, or align budget allocations with anticipated nutrition costs. By understanding your baseline energy needs, you can make informed decisions about grocery shopping and meal prep services.
Hourly and per-kilogram views make it easier to translate a daily BMR into meal timing, supplementation strategies, or hospital monitoring notes. Seeing that your body burns ~60 calories an hour just existing can be a powerful reframing tool for understanding hunger cues.
The layout mirrors intake forms used in clinics, so you can review results alongside the calorie calculator and BMI calculator without toggling apps. It integrates seamlessly into a broader health tracking ecosystem.
Saved default profiles let you switch between male and female coefficients instantly, a useful shortcut for household comparisons or coaching rosters. This feature saves time when managing plans for multiple family members or clients.
Your Basal Metabolic Rate (BMR) is the number of calories your body burns at rest. Even if you watched Netflix all day, your body needs this energy to keep your heart beating and lungs breathing.
Why it matters: Knowing your BMR is the first step to weight loss. It is your "metabolic floor".
We use the Mifflin-St Jeor equation, which the Academy of Nutrition and Dietetics considers the most accurate for the US population.