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Losing 25 pounds typically takes 27-31 weeks for women using a moderate deficit (20-25%). Your timeline varies based on starting body fat percentage and deficit level. A more aggressive deficit shortens the timeline but increases muscle loss risk. A conservative approach takes longer but preserves lean mass better.
Last updated: February 8, 2026
Your timeline depends on how aggressive your calorie deficit is. Here are all 6 deficit levels with their timelines:
| Deficit Level | Difficulty | Weeks | Daily Calories | Weekly Loss |
|---|---|---|---|---|
| 40% Extreme | Extreme | 15 weeks | 1,273 cal | 1.7 lbs/week |
| 35% Intense | Very Hard | 17 weeks | 1,379 cal | 1.49 lbs/week |
| 30% Fast | Hard | 20 weeks | 1,485 cal | 1.27 lbs/week |
| 25% Effective | Moderate | 24 weeks | 1,591 cal | 1.06 lbs/week |
| 20% Moderate | Easy | 29 weeks | 1,698 cal | 0.85 lbs/week |
| 15% Gentle | Easy | 39 weeks | 1,804 cal | 0.64 lbs/week |
Your starting body fat percentage affects your metabolic rate and how fast you lose weight. Here are timelines for different starting points using the recommended deficit:
| Starting Body Fat | Recommended Deficit | Weeks | Daily Calories |
|---|---|---|---|
| 22% | 20% Moderate | 27 weeks | 1,880 cal |
| 27% | 20% Moderate | 28 weeks | 1,790 cal |
| 32% | 20% Moderate | 29 weeks | 1,698 cal |
| 37% | 20% Moderate | 31 weeks | 1,607 cal |
Based on a 5'5", 150 lb woman at moderate activity. Your exact timeline depends on your weight, height, and activity level.
Your timeline to lose 25 pounds depends on three factors: (1) Starting body fat percentage. Higher body fat allows for more aggressive deficits without muscle loss. (2) Deficit size. A 30% deficit is twice as fast as a 15% deficit, but harder to sustain and riskier for muscle preservation. (3) Lean mass. More lean mass means a higher metabolic rate and faster fat loss at the same calorie intake.
Deficit Level
20% Moderate
Timeline
29 weeks
Daily Calories
1,698 cal
This is the best balance of speed and sustainability for losing 25 pounds. It preserves muscle well while keeping the deficit manageable.
| Week | Weight | Body Fat % | Fat Mass | Lean Mass |
|---|---|---|---|---|
| Start | 150 lbs | 32% | 48 lbs | 102 lbs |
| Week 2 | 148.3 lbs | 31.4% | 46.6 lbs | 101.7 lbs |
| Week 4 | 146.6 lbs | 30.8% | 45.1 lbs | 101.5 lbs |
| Week 6 | 144.9 lbs | 30.1% | 43.7 lbs | 101.2 lbs |
| Week 8 | 143.2 lbs | 29.5% | 42.2 lbs | 101 lbs |
| Week 10 | 141.5 lbs | 28.8% | 40.8 lbs | 100.7 lbs |
| Week 12 | 139.9 lbs | 28.2% | 39.4 lbs | 100.5 lbs |
| Week 14 | 138.2 lbs | 27.5% | 38 lbs | 100.2 lbs |
| Week 16 | 136.5 lbs | 26.8% | 36.5 lbs | 100 lbs |
| Week 18 | 134.8 lbs | 26% | 35.1 lbs | 99.7 lbs |
| Week 20 | 133.2 lbs | 25.3% | 33.7 lbs | 99.5 lbs |
| Week 22 | 131.5 lbs | 24.5% | 32.3 lbs | 99.2 lbs |
| Week 24 | 129.8 lbs | 23.8% | 30.9 lbs | 99 lbs |
| Week 26 | 128.2 lbs | 23% | 29.4 lbs | 98.7 lbs |
| Week 28 | 126.5 lbs | 22.2% | 28 lbs | 98.5 lbs |
| Week 29 | 125.7 lbs | 21.7% | 27.3 lbs | 98.4 lbs |
Based on a 5'5", 150 lb woman at moderate activity (2,122 cal TDEE) using a 20% deficit:
1,698
Daily Calories
102g
Protein
217g
Carbs
47g
Fat
Men typically lose 25 pounds 15-20% faster than women due to higher lean mass and metabolic rate. A 180 lb man at 25% body fat has a TDEE around 2,700 calories. A 150 lb woman at 32% body fat has a TDEE around 2,050 calories. The same deficit percentage results in different absolute calorie targets and weekly loss rates. Men also retain muscle better during a deficit due to higher testosterone levels.
Long weight loss phases have multiple plateaus. The first typically hits around weeks 6-8, the second around weeks 14-18. Each plateau lasts 1-3 weeks. Use diet breaks (1-2 weeks at maintenance) to break through plateaus instead of cutting calories further. Your TDEE drops as you lose weight, so recalculate your calorie target every 4-6 weeks.
Reverse diet slowly. Add 100-200 calories per week over 3-4 weeks until you reach maintenance. Jumping straight to maintenance calories after a longer cut often causes water weight spikes that feel discouraging but are not fat gain. Spend at least 6-8 weeks at maintenance before considering another cut or starting a bulk.
We recommend a 20% Moderate deficit for losing 25 pounds. A moderate deficit gives the best balance of speed and muscle preservation for this range.
At a 20% deficit, expect to lose approximately 0.85 lbs per week. Actual results vary based on starting weight, activity level, and adherence. Expect faster loss in the first 1-2 weeks (water weight) followed by a steadier rate.
Be careful with cardio during a longer cut. Your total energy output is already high from the calorie restriction. Adding aggressive cardio increases recovery demands and can accelerate muscle loss. Stick to 2-3 low-intensity walks per week (20-30 minutes).
Reverse diet slowly. Add 100-200 calories per week over 3-4 weeks until you reach maintenance. Jumping straight to maintenance calories after a longer cut often causes water weight spikes that feel discouraging but are not fat gain. Spend at least 6-8 weeks at maintenance before considering another cut or starting a bulk.
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