S-LINE TDEE Calculator

PERSONAL DETAILS

ESTIMATE YOUR DAILY ENERGY NEEDS

SEX USED BY EQUATION AGE WEIGHT (KG) HEIGHT (CM) BODY FAT % (OPTIONAL) DAILY ACTIVITY CALCULATION METHOD

CALORIE GOAL

CHOOSE YOUR TARGET

Maintenance keeps the target equal to estimated daily expenditure.

INSTANT RESULT

—MAINTENANCE TARGET / DAY

Complete the details above.

—Maintenance TDEE

—Resting energy

—Method used

0%Goal adjustment

ACCURACY

USE THE ESTIMATE, THEN CALIBRATE

No equation can directly measure TDEE. Your best personalised figure comes from comparing a consistent calorie intake with average morning weight over 2–4 weeks. Activity multipliers are estimates, so this calculator displays a sensible ±10% maintenance range and avoids claiming false precision.

Mifflin–St Jeor is used by default. When a reliable body-fat percentage is supplied, Auto uses the Cunningham lean-mass equation. Do not use this tool for anyone under 18, during pregnancy or breastfeeding, or in place of individual clinical advice.

Reference: Mifflin MD et al., American Journal of Clinical Nutrition. Deficit and surplus targets are adjustable starting estimates and should be refined using real progress with your coach.