How to lose 3 kg in 3 weeks

To lose 3 kg in 3 weeks, a typical 30-year-old male (175 cm, 80 kg, sedentary) burning about 2099 calories per day would need to eat approximately 963 calories per day.

A typical 30-year-old female (160 cm, 60 kg, sedentary) burning about 1547 calories per day, would need to eat approximately 800 calories per day.

Note for women: This goal may be too aggressive for healthy weight loss. A safe rate of loss for women is typically 0.5-0.75 kg (1-1.5 lbs) per week.

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

Enter your parameters below to get a personalized estimate

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

Your Parameters
Your Goal

To lose 3 kg in 3 weeks, you would need to eat approximately 963 calories per day, given your TDEE of 2099 kcal/day. After reaching your goal, your maintenance intake would be approximately 2063 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 3.9 weeks.

Daily Energy Expenditure (TDEE)

Estimated from your parameters

2099 kcal/day

Estimated Weight Over Time
Daily Calories1 Week2 Weeks1 Month3 Months
963 kcalYour goal (-54%)79 kg78 kg75.7 kg67.6 kg
1679 kcal-20%79.6 kg79.2 kg78.4 kg75.4 kg
1889 kcal-10%79.8 kg79.6 kg79.2 kg77.7 kg
2099 kcalMaintenance80 kg80 kg80 kg80 kg
2308 kcal+10%80.2 kg80.4 kg80.8 kg82.3 kg
2518 kcal+20%80.4 kg80.8 kg81.6 kg84.6 kg
Weight Projection
963 kcal (Your goal (-54%))
1679 kcal (-20%)
1889 kcal (-10%)
2099 kcal (Maintenance)
2308 kcal (+10%)
2518 kcal (+20%)
Target

This calculator is for informational purposes only and is not medical advice. Always consult a doctor or healthcare provider before making changes to your diet.

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