The 3,500 kcal rule
A common rule of thumb is that about 3,500 kcal equals roughly 1 pound of body fat. It is useful for planning, but real progress is affected by water weight, activity, training, sleep, sodium, and consistency.
1 lb ≈ 3,500 kcal
Examples
- 250 kcal/day deficit → about 1,750 kcal/week → about 0.5 lb/week estimate
- 500 kcal/day deficit → about 3,500 kcal/week → about 1 lb/week estimate
- 750 kcal/day deficit → about 5,250 kcal/week → about 1.5 lb/week estimate
Planning tips
- Track weekly weight averages instead of one-day scale changes.
- Combine calorie tracking with steps and strength training.
- Use this as a planning estimate, not a medical promise.
FAQ
Is 3,500 kcal exactly one pound of fat?
It is a common estimate, not an exact rule for every person or every week.
Why does the scale not match my deficit?
Water weight, salt, carbs, training inflammation, digestion, and adherence can all affect scale weight.
Can I use CaloriMate for weight goals?
Yes. CaloriMate helps you track calories, macros, and progress so you can follow your goals more consistently.
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