Calorie Calculator

InternetAiTools.com · BMR · TDEE · Weight Loss/Gain Goals

Your Details

Gender

Male

Female

Age

25 yrs

15 yrs100 yrs

Height

170 cm

100 cm250 cm

Weight

70 kg

30 kg250 kg

Activity Level

Sedentary (little or no exercise) Lightly active (exercise 1-3 days/week) Moderately active (exercise 3-5 days/week) Very active (hard exercise 6-7 days/week) Extra active (athlete/physical job)

Your Calorie Results

BMI: --

BMR (Base)

--

TDEE (Maintain)

--

Extreme Loss

--

Weight Loss

--

Maintain

--

Weight Gain

--

Muscle Gain

--

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Free Calorie Calculator for Weight Management

Calculate your daily calorie needs using the Mifflin-St Jeor equation — widely regarded as the most accurate BMR formula for the general population — to get your Basal Metabolic Rate (calories burned at complete rest) and Total Daily Energy Expenditure (calories burned including daily activity), adjusted for an activity level from sedentary to extra active, with personalized calorie targets for extreme weight loss, moderate weight loss, maintenance, weight gain, and muscle building, all calculated instantly in your browser with no registration and no data ever stored.

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Frequently Asked Questions

What is BMR and how is it calculated? ▼

BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest. It is calculated using the Mifflin-St Jeor equation: For men: (10 × weight in kg) + (6.25 × height in cm) - (5 × age) + 5. For women: (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161.

What is TDEE and why is it important? ▼

TDEE (Total Daily Energy Expenditure) is your BMR multiplied by your activity level. It represents the total calories you burn in a day including exercise. Knowing your TDEE helps you set accurate calorie goals for weight loss, maintenance, or muscle gain.

How much weight can I lose per week safely? ▼

A safe and sustainable rate of weight loss is 0.5 to 1 kg (1-2 lbs) per week. This requires a daily calorie deficit of 500-1000 calories below your TDEE. Losing weight faster than this may lead to muscle loss, nutritional deficiencies, and metabolic slowdown.

Is the Mifflin-St Jeor formula accurate? ▼

The Mifflin-St Jeor equation is widely considered the most accurate BMR formula for the general population. It was developed in 1990 and validated by multiple studies. It provides results within about 10-15% of true BMR for most individuals, making it excellent for practical use.

How do I choose the right activity level? ▼

Sedentary: little to no exercise. Lightly active: exercise 1-3 days/week. Moderately active: exercise 3-5 days/week. Very active: hard exercise 6-7 days/week. Extra active: athlete or physical job. Choose honestly for accurate TDEE.

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