How to lose 25 lbs in 6 weeks

To lose 25 lbs in 6 weeks, you would need to eat approximately 800 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.

Note: This goal may be too aggressive for healthy weight loss. A safe rate of loss is typically 0.5-1 kg (1-2 lbs) per week.

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 25 lbs in 6 weeks, you would need to eat approximately 27 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 3.2 months.

Estimated Weight Over Time
Daily Calories1 Week2 Weeks1 Month3 Months
27 kcalYour goal (-99%)172.2 lbs168 lbs158.5 lbs123 lbs
1679 kcal-20%175.5 lbs174.6 lbs172.8 lbs165.6 lbs
1889 kcal-10%175.9 lbs175.5 lbs174.6 lbs171.1 lbs
2099 kcalMaintenance176.4 lbs176.4 lbs176.4 lbs176.4 lbs
2308 kcal+10%176.8 lbs177.3 lbs178.1 lbs181.7 lbs
2518 kcal+20%177.3 lbs178.1 lbs179.9 lbs187.2 lbs
Weight Projection
27 kcal (Your goal (-99%))
1679 kcal (-20%)
1889 kcal (-10%)
2099 kcal (Maintenance)
2308 kcal (+10%)
2518 kcal (+20%)
Target

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