Calories to Kilograms Converter (kcal to kg)
Convert calories burned to kilograms of weight loss (kcal to kg). See results in kg, pounds, and grams. Includes a timeline at your daily calorie deficit.
WEIGHT EQUIVALENT
1.00 kg (2.2 lbs)
GRAMS
1000 g
POUNDS
2.20 lbs
WEEKS (at 500 kcal/day)
2.2 wks
FORMULA
7,700÷7700
Calories to Weight Loss — Quick Reference
| Calories | Kilograms | Pounds | At 500 kcal/day |
|---|---|---|---|
| 500 kcal | 0.06 kg | 0.1 lbs | 0.1 weeks |
| 1,000 kcal | 0.13 kg | 0.3 lbs | 0.3 weeks |
| 2,000 kcal | 0.26 kg | 0.6 lbs | 0.6 weeks |
| 3,500 kcal | 0.45 kg | 1.0 lbs | 1.0 weeks |
| 5,000 kcal | 0.65 kg | 1.4 lbs | 1.4 weeks |
| 7,700 kcal | 1.00 kg | 2.2 lbs | 2.2 weeks |
| 10,000 kcal | 1.30 kg | 2.9 lbs | 2.9 weeks |
| 15,000 kcal | 1.95 kg | 4.3 lbs | 4.3 weeks |
| 23,100 kcal | 3.00 kg | 6.6 lbs | 6.6 weeks |
| 38,500 kcal | 5.00 kg | 11.0 lbs | 11.0 weeks |
How to Convert Calories to Kilograms
One kilogram of body fat contains approximately 7,700 calories (kcal). To find how many kilograms a calorie deficit represents:
Example: 7,700 kcal deficit
= 7,700 ÷ 7,700 = 1.00 kg (2.2 lbs)
Example: 3,500 kcal deficit
= 3,500 ÷ 7,700 = 0.45 kg (1.0 lb)
Example: 38,500 kcal deficit
= 38,500 ÷ 7,700 = 5.00 kg (11.0 lbs)
Note: In the US, the "3,500 calorie rule" is widely used: 3,500 kcal = 1 pound of body fat. Both rules yield the same result (7,700 kcal/kg ≈ 3,500 kcal/lb).
Calories to Weight Loss — Reference Table
| Calories | Kilograms | Pounds | Weeks (500 kcal/day deficit) |
|---|---|---|---|
| 500 kcal | 0.06 kg | 0.14 lbs | 0.1 wks |
| 1,000 kcal | 0.13 kg | 0.29 lbs | 0.3 wks |
| 3,500 kcal | 0.45 kg | 1.0 lb | 1.0 wk |
| 7,700 kcal | 1.00 kg | 2.2 lbs | 2.2 wks |
| 15,400 kcal | 2.00 kg | 4.4 lbs | 4.4 wks |
| 23,100 kcal | 3.00 kg | 6.6 lbs | 6.6 wks |
| 38,500 kcal | 5.00 kg | 11.0 lbs | 11.0 wks |
| 77,000 kcal | 10.00 kg | 22.0 lbs | 22.0 wks |
Calories Burned per Hour — Exercise Chart
Approximate calories burned per hour for a 155 lb (70 kg) person:
| Activity | kcal/hour | Hours to Burn 1 lb | Hours to Burn 1 kg |
|---|---|---|---|
| Walking (3.5 mph) | 298 | 11.7 hrs | 25.8 hrs |
| Cycling (moderate) | 520 | 6.7 hrs | 14.8 hrs |
| Swimming (laps) | 446 | 7.8 hrs | 17.3 hrs |
| Running (6 mph) | 596 | 5.9 hrs | 12.9 hrs |
| HIIT | 600 | 5.8 hrs | 12.8 hrs |
| Weight lifting | 224 | 15.6 hrs | 34.4 hrs |
| Yoga | 298 | 11.7 hrs | 25.8 hrs |
| Elliptical | 480 | 7.3 hrs | 16.0 hrs |
Safe Weight Loss Rate — CDC Recommendations
The CDC recommends losing 1–2 pounds (0.45–0.9 kg) per week for sustainable weight loss:
| Daily Deficit | Weekly Loss | Monthly Loss | Safety |
|---|---|---|---|
| 250 kcal/day | 0.5 lb / 0.23 kg | 2.0 lbs / 0.9 kg | ✅ Very safe |
| 500 kcal/day | 1.0 lb / 0.45 kg | 4.0 lbs / 1.8 kg | ✅ Recommended |
| 750 kcal/day | 1.5 lbs / 0.68 kg | 6.0 lbs / 2.7 kg | ⚠️ Moderate |
| 1,000 kcal/day | 2.0 lbs / 0.9 kg | 8.0 lbs / 3.6 kg | ⚠️ Maximum recommended |
Common US Foods — Calorie Context
| Food | Calories | Weight Equivalent |
|---|---|---|
| 1 can of soda (12 oz) | 140 kcal | 18 g / 0.6 oz body fat |
| Big Mac | 550 kcal | 71 g / 2.5 oz body fat |
| Slice of pizza | 285 kcal | 37 g / 1.3 oz body fat |
| 1 Starbucks Frappuccino (Grande) | 380 kcal | 49 g / 1.7 oz body fat |
| 1 lb of chicken breast | 748 kcal | 97 g / 3.4 oz body fat |
| 1 avocado | 322 kcal | 42 g / 1.5 oz body fat |
What Is a Calorie?
A calorie (kcal, kilocalorie) is a unit of energy. In nutrition, it represents the energy needed to raise 1 kilogram of water by 1°C. When we say "calories" in the US, we mean kilocalories (kcal). Food labels in the US list Calories (capital C) which are kilocalories. Your body burns calories through basal metabolism, physical activity, and digestion.
What Is a Kilogram?
A kilogram (kg) is the SI base unit of mass equal to 2.20462 pounds. In the context of weight loss, 1 kg of body fat stores approximately 7,700 kcal of energy. While Americans typically think in pounds, kilograms are used internationally and by medical professionals.