Summary
Models a daily calorie adjustment from maintenance energy and a weekly weight-change target.
Calculation details
The 7,700 kcal/kg relationship is a simplified energy approximation, not a prediction. Conservative limits reject severe adjustments and extremely low targets.
Formula
Daily adjustment = weekly kilograms × 7,700 kcal/kg / 7; target = maintenance - adjustment.
Worked example
Calorie deficit worked example
A 0.5 kg weekly target models an adjustment of 550 kcal/day.
How it works
Provide a maintenance calorie estimate and a weekly weight-change target within the conservative limits. The model converts weekly kilograms to a daily energy adjustment using a simplified 7,700 kcal/kg rule — useful for planning conversations, not a guaranteed outcome.
Frequently asked questions
Is this a medical diagnosis?
No. It is an educational estimate and cannot diagnose a condition or replace individualized professional advice.
Why can my actual result differ?
Weight change is not a fixed kcal-per-kg process and adherence varies day to day.
When is this calculator most useful?
Use it to translate a weekly change target into a modeled daily adjustment — not a diet prescription.
How are results rounded?
The calculation retains full precision; centralized display formatting rounds only the visible result.