weight management tool
Calorie Deficit Calculator
Calculate the custom daily caloric target required to hit your target weight loss within a safe time frame.
Interactive Calculator System
85 kg
40 kg200 kg
80 kg
35 kg190 kg
8
4 24
2300
1200 5000
Real-time Calculated Outputs
Recommended Calorie Intake
1,612kcal/day
Daily Deficit Required688 kcal/day
Est. Weekly Weight Loss0.63 kg kg/week
To achieve your goal of dropping 5 kg in 8 weeks, consume 1612 kcal daily. This requires a daily deficit of 688 calories from your baseline TDEE.
Methodology & Formula: Energy Balance Equations
Losing 1 kilogram of body fat requires burning a cumulative deficit of approximately 7,700 kcal (or 3,500 kcal per pound of fat).
Daily Calorie Deficit = (Weight to Lose × Fat Energy Value) ÷ Target Days.
Standard Reference Calculations
Losing 5 kg in 10 Weeks (TDEE 2200)
Inputs: TDEE: 2200, Goal: Lose 5kg, Weeks: 10
Output: Calorie Target = 1,650 kcal/day
Losing 10 lbs in 8 Weeks (TDEE 2500)
Inputs: TDEE: 2500, Goal: Lose 10lbs, Weeks: 8
Output: Calorie Target = 1,875 kcal/day
Frequently Asked Questions
Get answers to common queries based on clinical literature and fitness research.
A daily deficit of 300 to 500 calories is generally safe, sustainable, and preserves active muscle mass.