Calorie Calculator

Estimate your daily calorie needs based on age, sex, height, weight, and activity level. Adjust for weight loss, maintenance, or gain goals.

Biological Sex
yrs
ft
in
lbs

Daily Calorie Target

2,728

calories per day

Full Breakdown

Basal Metabolic Rate (BMR)
1,760 cal/day
Maintenance (TDEE)
2,728 cal/day

Assumptions

Formula: Mifflin-St Jeor equation (BMR), multiplied by activity factor (TDEE).

Activity multiplier used: 1.55× BMR

Calorie-to-weight assumption: ±3,500 cal/week ≈ ±1 lb/week of body weight change.

Disclaimer: Calorie estimates are based on established formulas and are approximations. Individual metabolism varies. Consult a registered dietitian or healthcare provider for personalized nutrition advice.

Mifflin-St Jeor Formula

Men: BMR = (10 × kg) + (6.25 × cm) − (5 × age) + 5. Women: BMR = (10 × kg) + (6.25 × cm) − (5 × age) − 161. Multiply BMR by activity factor to get TDEE.

Activity Level Multipliers

Sedentary (little/no exercise): BMR × 1.2. Light (1–3 days/week): BMR × 1.375. Moderate (3–5 days): BMR × 1.55. Very active (6–7 days): BMR × 1.725. Extra active (physical job + training): BMR × 1.9.

Frequently Asked Questions

This calculator uses the Mifflin-St Jeor equation, which is widely regarded as the most accurate formula for estimating Basal Metabolic Rate (BMR). BMR is then multiplied by an activity factor to estimate Total Daily Energy Expenditure (TDEE).
A deficit of 500 calories per day generally produces about 1 pound of weight loss per week. Consult a doctor before pursuing aggressive deficits below 1,200 calories (women) or 1,500 calories (men).
Total Daily Energy Expenditure (TDEE) is the total number of calories your body burns per day, including exercise and daily activity.