How to lose 40 lbs in a month
To lose 40 lbs in a month, a typical 30-year-old male (5'9", 176.4 lbs, sedentary) burning about 2099 calories per day would need to eat approximately 800 calories per day.
Note for men: This goal may be too aggressive for healthy weight loss. A safe rate of loss for men is typically 0.5-1 kg (1-2 lbs) per week.
A typical 30-year-old female (5'3", 132.3 lbs, 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.
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2099 kcal/day
To lose 40 lbs in 1 month, you would need to eat approximately 0 calories per day, given your TDEE of 2099 kcal/day. After reaching your goal, your maintenance intake would be approximately 1881 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 2.4 months.
| Daily Calories | 1 Week | 2 Weeks | 1 Month | 3 Months |
|---|---|---|---|---|
| 0 kcalYour goal (-100%) | 172.2 lbs | 168 lbs | 158.7 lbs | 125.9 lbs |
| 1679 kcal-20% | 175.5 lbs | 174.6 lbs | 172.8 lbs | 166.2 lbs |
| 1889 kcal-10% | 175.9 lbs | 175.5 lbs | 174.6 lbs | 171.3 lbs |
| 2099 kcalMaintenance | 176.4 lbs | 176.4 lbs | 176.4 lbs | 176.4 lbs |
| 2308 kcal+10% | 176.8 lbs | 177.3 lbs | 178.1 lbs | 181.4 lbs |
| 2518 kcal+20% | 177.3 lbs | 178.1 lbs | 179.9 lbs | 186.5 lbs |