How to Use the Body Fat 1kg Reduction Calculator
One kilogram of body fat equals approximately 7,700 kcal. The larger your daily calorie deficit (calories burned minus calories consumed), the faster you lose body fat. This calculator shows how long your current plan takes to burn 1 kg of fat, helping you set realistic goals.
A safe and sustainable fat loss pace is 0.25–0.75 kg per week. Faster loss risks muscle loss and rebound weight gain. Combining adequate protein (1.6–2.2 g/kg body weight) with strength training enables body recomposition — reducing fat while maintaining or building muscle.
Frequently Asked Questions
About 7,700 kcal. A 500 kcal daily deficit leads to approximately 1 kg of fat loss in 15 days.
Yes. Adequate protein (1.6–2.2 g/kg body weight) and strength training enable body recomposition — losing fat while maintaining or growing muscle.
Weight loss includes water, muscle, and fat loss. Fat loss specifically targets adipose tissue. Use body composition analysis (like InBody) to track both separately.