BMR & TDEE Calculator — by BitTools
Calculate your daily calorie needs. 100% client-side. No data leaves your browser.
Your BMR & TDEE result will appear here...
How to use
- Enter your age, height (in cm), and weight (in kg).
- Select your gender and activity level.
- Click Calculate (or press Ctrl/Cmd + Enter).
- You can Copy or Download the results instantly.
About This BMR & TDEE Calculator
This free client-side calculator estimates your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE). It runs entirely in your browser—no data is uploaded to any server.
👉 Read More Online BMR & TDEE calculator by BitTools.cc
What is BMR?
Basal Metabolic Rate (BMR) is the number of calories your body needs at rest to maintain vital functions like breathing, circulation, and cell production.
What is TDEE?
Total Daily Energy Expenditure (TDEE) is your BMR multiplied by an activity factor. It estimates the total calories you burn per day based on your lifestyle.
How is BMR calculated?
For men: BMR = 10 × weight (kg) + 6.25 × height (cm) - 5 × age (years) + 5
For women: BMR = 10 × weight (kg) + 6.25 × height (cm) - 5 × age (years) - 161
How is TDEE calculated?
TDEE = BMR × Activity Factor
Activity Factors:
- Sedentary (little or no exercise): 1.2
- Lightly active (1–3 days/week): 1.375
- Moderately active (3–5 days/week): 1.55
- Very active (6–7 days/week): 1.725
- Super active (hard exercise, physical job): 1.9
FAQs about BMR & TDEE
🔹 Is BMR a diagnostic tool?
No — BMR is an estimate of calories needed at rest. It is useful for planning diet and exercise but is not a medical diagnostic tool.
🔹 Why is TDEE important?
TDEE helps you determine how many calories you need to maintain, lose, or gain weight based on your activity level.