Free Weight Loss Timeline Calculator — How Long to Reach Your Goal
Enter your current weight, goal weight, and weekly calorie deficit to get a personalized week-by-week weight loss timeline with a projected target date. Free, no signup required.
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1. Enter your weights. Input your current and goal weight in pounds. The difference is the total weight you need to lose.
2. Choose your deficit. Select your weekly calorie deficit. A 500 kcal/day deficit equals 3,500 kcal/week — roughly 1 lb of fat lost per week. A 250 kcal/day deficit is slower but more sustainable with less hunger.
3. Get your timeline. The calculator divides total weight to lose by your weekly loss rate to show how many weeks to goal, a target date, and a milestone table every 4 weeks.
4. Adjust as you go. Recalculate every 4–6 weeks as your weight changes. Your TDEE decreases as you lose weight, so your effective deficit shrinks over time.
Calorie Deficit Size Comparison
| Daily Deficit | Weekly Loss | Best For |
|---|---|---|
| 250 kcal/day | ~0.5 lbs/week | Lean individuals, easy maintenance |
| 500 kcal/day | ~1 lb/week | Most people — recommended starting point |
| 750 kcal/day | ~1.5 lbs/week | Higher body fat, short-term aggressive cut |
| 1000 kcal/day | ~2 lbs/week | Significant excess weight, supervised cut |
Related: Cut Calculator — get your full cutting plan with macros
Frequently Asked Questions
What is a realistic weight loss rate?
A realistic and sustainable weight loss rate is 0.5–1% of your body weight per week. For a 200 lb person, that is 1–2 lbs per week. Faster rates are possible but increase the risk of muscle loss, fatigue, and metabolic adaptation.
Is losing 1 lb per week better or worse than 2 lbs per week?
Losing 1 lb per week (a 500 kcal/day deficit) is generally recommended for most people. A 2 lb/week pace (1,000 kcal/day deficit) is more aggressive and may be appropriate for those with significant weight to lose, but increases risk of muscle loss and is harder to sustain. For leaner individuals, 0.5 lbs per week is often safer.
Why does weight loss slow down over time (plateau)?
As you lose weight, your body gets lighter and burns fewer calories at rest. Your TDEE decreases, which shrinks the effective deficit even if you eat the same amount. Additionally, metabolic adaptation — where the body down-regulates energy expenditure in response to restriction — can further slow progress. Recalculating your calories every 4–8 weeks helps account for this.
Why is slower weight loss better?
Slower deficits (250–500 kcal/day) better preserve lean muscle mass, are easier to sustain long-term, cause less hormonal disruption, and typically result in better weight maintenance after reaching your goal. Research consistently shows that gradual fat loss leads to better body composition outcomes than aggressive cutting.
How can I speed up my weight loss without a larger deficit?
Adding resistance training builds muscle and increases your TDEE over time. Increasing NEAT (non-exercise activity thermogenesis) — walking more, taking stairs, standing instead of sitting — can add 200–400 kcal burned per day. Improving sleep quality supports hormones that regulate appetite and fat metabolism. These approaches expand the "caloric headroom" without requiring an even larger food restriction.