The Mifflin Equation Calculator helps you determine how many calories your body needs daily using the scientifically supported Mifflin-St Jeor equation.
This formula is widely used in nutrition science and is considered more accurate than the Harris-Benedict equation.
What Is the Mifflin Equation?
The Mifflin-St Jeor equation calculates Basal Metabolic Rate (BMR):
For Men:
BMR = (10 × weight) + (6.25 × height) − (5 × age) + 5
For Women:
BMR = (10 × weight) + (6.25 × height) − (5 × age) − 161
It estimates calories burned at rest.
Required Inputs
- Gender
- Age
- Weight
- Height
- Activity Level
Example Calculation
Female, 28 years, 60 kg, 165 cm, lightly active:
BMR = (10×60) + (6.25×165) − (5×28) − 161
BMR = 600 + 1031.25 − 140 − 161
BMR = 1330 calories
TDEE = 1330 × 1.375 = 1828 calories
Why Use This Calculator?
- Scientifically reliable
- Quick and easy
- Supports diet planning
- Helps avoid under-eating or overeating
FAQs
- What does it calculate?
Daily calorie needs. - Is it accurate?
Yes, widely validated. - Who can use it?
Adults tracking nutrition. - Does it include exercise?
Yes, via activity multiplier. - Is it free?
Yes. - Does it calculate macros?
No. - Can it help weight loss?
Yes. - Is it better than older formulas?
Generally yes. - What units are required?
Weight and height. - How often to use?
After weight changes. - Does metabolism vary?
Yes. - Is it medical advice?
No. - Can elderly use it?
Yes. - Does it consider body fat?
No. - What is BMR?
Calories burned at rest. - What is TDEE?
Total daily calorie burn. - Is it for athletes?
Yes. - Does age matter?
Yes. - Is it instant?
Yes. - Can teens use it?
Best for adults.
Conclusion
The Mifflin Equation Calculator is a precise and practical tool for determining daily calorie requirements. Based on a scientifically trusted equation, it provides reliable BMR and TDEE estimates that support healthy weight management. Whether your goal is losing fat, building muscle, or maintaining your weight, this calculator offers a strong foundation for nutritional planning.