BMR Calculator – Calculate Your Daily Calorie Needs
Use our free BMR Calculator to estimate how many calories your body burns each day at rest. Find your daily calorie needs based on age, gender, height, weight, and activity level.
BMR Calculator
Calculate Your Basal Metabolic Rate Instantly
What is BMR?
Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life functions while at rest. These functions include breathing, blood circulation, digestion, and maintaining body temperature.
Knowing your BMR can help you:
- Lose weight
- Gain muscle
- Maintain healthy body weight
- Create proper diet plans
- Track calorie intake
How Does This BMR Calculator Work?
This calculator estimates your Basal Metabolic Rate using scientifically accepted formulas based on:
- Gender
- Age
- Height
- Weight
- Activity level
After calculating your BMR, the tool estimates your Total Daily Energy Expenditure (TDEE), which helps determine how many calories you need daily.
BMR Formula
For Men
BMR=10W+6.25H−5A+5BMR = 10W + 6.25H – 5A + 5BMR=10W+6.25H−5A+5
For Women
BMR=10W+6.25H−5A−161BMR = 10W + 6.25H – 5A – 161BMR=10W+6.25H−5A−161
Where:
- W = Weight in kilograms
- H = Height in centimeters
- A = Age in years
| Activity Level | Description |
|---|---|
| Sedentary | Little or no exercise |
| Lightly Active | Light exercise 1–3 days/week |
| Moderately Active | Moderate exercise 3–5 days/week |
| Very Active | Hard exercise 6–7 days/week |
| Extra Active | Intense exercise or physical job |
Why Knowing Your BMR is Important
Understanding your BMR can help you:
- Plan calorie intake accurately
- Improve weight loss results
- Build muscle efficiently
- Avoid overeating
- Improve fitness tracking
- Maintain healthy metabolism
BMR for Weight Loss
To lose weight, most people need to consume fewer calories than their Total Daily Energy Expenditure (TDEE). A healthy calorie deficit combined with exercise may support sustainable fat loss.
BMR for Muscle Gain
For muscle gain, calorie intake generally needs to exceed maintenance calories along with proper strength training and protein intake.
Frequently Asked Questions
What is a good BMR?
A healthy BMR depends on age, gender, body size, and activity level.
Is BMR the same as BMI?
No. BMI measures body weight relative to height, while BMR estimates calories burned at rest.
How accurate is a BMR calculator?
BMR calculators provide estimates based on standard equations. Actual metabolism may vary.
Does age affect BMR?
Yes. BMR generally decreases with age due to muscle loss and metabolic changes.
Can exercise increase BMR?
Yes. Building muscle through exercise may increase metabolic rate.