Calories Burned: Exercise, Steps and Everyday Movement
How your body burns energy through the day — what exercise, steps and everyday movement burn, why workouts alone rarely melt fat, and how those calories become real weight change.
Calories to Kg Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Body fat change
1.000
- Body fat change (lb)
- 2.200
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Calories to Kg Calculator
The Calories to Kg Calculator works out your body fat change, along with 1 related figure in an instant. Enter calorie surplus or deficit and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the calorie surplus or deficit.
- Read off your body fat change, together with body fat change (lb) — the calculator updates automatically, with no button to press.
Formula
The Calories to Kg Calculator uses the formula:
Body fat change = Calorie surplus or deficit ÷ 7700
Worked example
For example, with calorie surplus or deficit of 7,700 kcal, the body fat change is 1.000.
| Calorie surplus or deficit | 7,700 kcal |
|---|
| Body fat change | 1.000 |
|---|---|
| Body fat change (lb) | 2.200 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Body fat
- The proportion of your body weight that is fat, as opposed to muscle, bone and water.
- Calorie
- A unit of energy from food; daily needs depend on weight, activity and goals.
Frequently asked questions
About 7700 calories. So a total deficit of 7700 calories corresponds to roughly 1 kilogram of fat lost.
About 3500 calories, since a pound is roughly 0.45 kg. The calculator shows both kg and pounds.
No. The 7700-calorie rule is a useful average. Water, muscle and metabolic changes mean real results vary week to week.
Yes. A calorie surplus adds body mass at roughly the same rate, so 7700 surplus calories add about 1 kg over time.
The Calories to Kg Calculator uses the formula: Body fat change = Calorie surplus or deficit ÷ 7700. For example, with calorie surplus or deficit of 7,700 kcal, the body fat change is 1.000.
Enter the calorie surplus or deficit. Read off your body fat change, together with body fat change (lb) — the calculator updates automatically, with no button to press.
Related guides
Calories to Kg Table: Body fat change by Calorie surplus or deficit
Reference table of body fat change for Calories to Kg across a range of calorie surplus or deficit values — exact, engine-computed figures you can read off at a glance.
How to Calculate Calories to Kg: Formula, Steps & Examples
Learn how to calculate Calories to Kg — the formula explained step by step, with worked examples and a free calculator to check your answer.