How to lose 3 kg in 3 weeks

To lose 3 kg in 3 weeks, you would need to eat approximately 999 calories per day, assuming a typical adult (30 years old, male, 175 cm, 80 kg) with a sedentary lifestyle whose body burns about 2099 calories per day.

Your actual calorie needs depend on your age, gender, height, weight, and activity level. Use the calculator below to get a personalized estimate.

Get your personalized estimate

Adjust the parameters below to see projections based on your own body metrics.

Your Parameters
Daily Energy Expenditure (TDEE)

Estimated from your parameters

2099 kcal/day

Your Goal

To lose 3 kg in 3 weeks, you would need to eat approximately 999 calories per day, given your TDEE of 2099 kcal/day.

Warning: Eating below 1,200 kcal/day is generally not recommended without medical supervision. Consider a longer timeframe — at 1,200 kcal/day it would take approximately 3.7 weeks.

Estimated Weight Over Time
Daily Calories1 Week2 Weeks1 Month3 Months
999 kcalYour goal (-52%)79 kg78 kg75.7 kg67.1 kg
1679 kcal-20%79.6 kg79.2 kg78.4 kg75.1 kg
1889 kcal-10%79.8 kg79.6 kg79.2 kg77.6 kg
2099 kcalMaintenance80 kg80 kg80 kg80 kg
2308 kcal+10%80.2 kg80.4 kg80.8 kg82.4 kg
2518 kcal+20%80.4 kg80.8 kg81.6 kg84.9 kg
Weight Projection
999 kcal (Your goal (-52%))
1679 kcal (-20%)
1889 kcal (-10%)
2099 kcal (Maintenance)
2308 kcal (+10%)
2518 kcal (+20%)
Target

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