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BMR & TDEE Calculator

BMR & TDEE Calculator

#Health#Calculator#SportsScience#DataAnalytics#LabVerified

How many calories should you eat to lose weight? Use our TDEE Calculator to find your maintenance calories and perfect macro split for cutting or bulking.

Basic Info

Body Measurements (Optional, for Body Fat & WHR)

💡 Enter Neck, Waist (and Hips) to unlock Body Fat % and Waist-to-Hip Ratio.

🔥 Energy Expenditure

Basal Metabolic Rate (BMR)1749 kcal
Daily Energy Expenditure (TDEE)2711 kcal

⚖️ Weight Analysis

BMI
26.1
體重過重
Ideal Weight Range
~ 70.5 kg

📏 Body Composition

🔒
Enter measurements
to unlock Body Fat

BMI Categories (WHO Standard)

CategoryBMI RangeHealth Risk
Underweight< 18.5Moderate
Normal Weight18.5 - 24.9Low
Overweight25.0 - 29.9Increased
Obesity I30.0 - 34.9High
Obesity II35.0 - 39.9Very High

Specialized Versions

TDEE for a 140 lb Sedentary woman
TDEE for a 140 lb Sedentary woman
TDEE for a 140 lb Lightly Active man
TDEE for a 140 lb Lightly Active man
TDEE for a 140 lb Lightly Active woman
TDEE for a 140 lb Lightly Active woman
TDEE for a 140 lb Moderately Active man
TDEE for a 140 lb Moderately Active man
TDEE for a 140 lb Moderately Active woman
TDEE for a 140 lb Moderately Active woman
TDEE for a 140 lb Very Active man
TDEE for a 140 lb Very Active man
TDEE for a 140 lb Very Active woman
TDEE for a 140 lb Very Active woman
TDEE for a 140 lb Extremely Active man
TDEE for a 140 lb Extremely Active man
TDEE for a 140 lb Extremely Active woman
TDEE for a 140 lb Extremely Active woman
TDEE for a 150 lb Sedentary man
TDEE for a 150 lb Sedentary man
TDEE for a 150 lb Sedentary woman
TDEE for a 150 lb Sedentary woman
TDEE for a 150 lb Lightly Active man
TDEE for a 150 lb Lightly Active man
TDEE for a 150 lb Lightly Active woman
TDEE for a 150 lb Lightly Active woman
TDEE for a 150 lb Moderately Active man
TDEE for a 150 lb Moderately Active man
TDEE for a 150 lb Moderately Active woman
TDEE for a 150 lb Moderately Active woman

Scientific Methodology & Accuracy

Our tools are built using peer-reviewed research and industry-standard formulas. This specific calculator utilizes BMR CALCULATOR metrics validated by sports science organizations like the ACSM and NSCA.
Force plate analysis has revolutionized our understanding of landing mechanics and injury risk profiles.

Verified Formulas
Peer Reviewed
Last Verified

Performance Concept

"The path to superior performance is paved with objective measurements and rigorous analysis."

Expert Protocol

"Focus on nasal breathing during low-intensity sessions to improve your aerobic efficiency. Rapid increases in volume (over 10% per week) are the primary cause of overuse injuries."

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How to Use This Tool

  • 1

    Enter your current body weight, height, age, and sex into the BMR & TDEE Calculator.

  • 2

    Select the activity level that best matches your weekly exercise volume (err conservative if unsure).

  • 3

    Use the TDEE output as your maintenance calories. Set a 15–20% deficit for fat loss, or 5–10% surplus for muscle gain.

  • 4

    Recalculate every 4–6 weeks as body weight changes alter your BMR and TDEE.

Key Terminology

BMR (Basal Metabolic Rate)
Calories burned at complete rest to sustain vital functions. Calculated via the Mifflin-St Jeor equation (most accurate for the general population).
TDEE (Total Daily Energy Expenditure)
BMR multiplied by an activity factor (1.2–1.9). Your total daily caloric requirement for body weight maintenance.
1RM (One Rep Maximum)
Maximum weight liftable for a single repetition. Used to calculate training percentages: 65–80% for hypertrophy, 85–95% for strength.
Heart Rate Reserve (HRR)
Difference between maximum and resting heart rate. Used in the Karvonen formula for calculating precise training zones.
VO2 Max
Maximum oxygen utilization per minute per kg of body weight. Declines ~1%/year after age 25 without training; trainable through structured aerobic exercise.
Progressive Overload
Gradually increasing training stimulus (weight, reps, or sets) by 2.5–5% when all target reps are completed. The fundamental driver of adaptation.
Body Composition
The ratio of fat mass to lean mass. More informative than BMI for athletes — a 90kg athlete with 10% body fat is categorically different from a 90kg sedentary individual.

Frequently Asked Questions

Q1 Which BMR formula is most accurate?

The Mifflin-St Jeor equation is validated as the most accurate for the general population (within 10% for ~82% of people). The Harris-Benedict equation is slightly less accurate due to its older dataset. Neither accounts for body composition — leaner individuals have higher actual BMR than predicted.

Q2 How do I calculate my TDEE accurately?

Multiply your BMR by your activity multiplier: Sedentary (1.2), Light exercise 1–3 days/week (1.375), Moderate 3–5 days/week (1.55), Hard 6–7 days/week (1.725), Physical job + training (1.9). Endurance athletes often need the 1.725–1.9 range.

Q3 What percentage of 1RM should I use for hypertrophy?

65–80% of your 1RM, for 8–12 reps per set, with 60–90 seconds rest between sets. This rep range creates optimal mechanical tension and metabolic stress for muscle growth according to NSCA guidelines.

Q4 How do I find my maximum heart rate accurately?

The most accurate method is a graded exercise test to exhaustion. Field tests (sprint finish of a 5K race) approximate this. The 220-age formula carries ±10–12 BPM error — use the Tanaka formula (211 − 0.64 × age) for endurance athletes.

Understanding BMR vs. TDEE

How to Use TDEE for Your Goals

A Note on Activity Levels

Common Pitfall: Don't Eat Below BMR!

Use Cases / Example Scenarios

1
Progress Benchmarking
Scenario

Re-test your 1RM or TDEE every 6–8 weeks. Track relative strength (1RM ÷ bodyweight) to account for body composition changes.

2
Body Composition Audit
Scenario

Use BMI alongside waist circumference and body fat % for a complete cardiovascular risk picture that BMI alone cannot provide.

3
Metabolic Rate Troubleshooting
Scenario

If weight loss has stalled, recalculate your BMR with current body weight and activity level — metabolic adaptation reduces TDEE by 5–10% over time.

4
Cutting Phase Planning
Scenario

Calculate your TDEE and set a 15–20% caloric deficit to trigger fat loss while preserving lean muscle mass.

5
Strength Program Design
Scenario

Use 1RM-derived percentages to program your squat, bench, and deadlift with scientifically-validated rep schemes for your goal (strength vs hypertrophy).

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⚕️ Medical Disclaimer: All values provided by this calculator are population-based educational estimates and do not constitute medical advice. Individual physiology, health conditions, and medication use vary significantly. Consult a licensed healthcare provider or registered dietitian before making changes to your diet, supplementation, or exercise program.