Comparison Tool

Compare 200, 500, and 1000 Calorie Deficits

For a 30 lb goal at a 2,400-calorie maintenance, a 200-calorie deficit takes about 150 weeks eating 2,200 a day, a 500 deficit about 60 weeks at 1,900, and a 1,000 deficit about 30 weeks at 1,400. Bigger gaps are faster but harder to sustain and may drop intake below safe minimums. The chart compares the weeks to goal for each level.

Results

Visualization

CalorieFig provides educational estimates only, using established nutrition formulas such as the Mifflin-St Jeor equation and standard macro calorie values (4 cal/g protein and carb, 9 cal/g fat). These tools do not diagnose any condition and are not medical or dietary advice. Individual needs vary. Consult a physician or registered dietitian before changing your diet.

How It Works

Maintenance calories come from Mifflin-St Jeor times your activity factor. We subtract each deficit (200, 500, 1,000) to get daily intake, then convert the gap to weeks with the 3,500-calorie-per-pound rule: weeks = (pounds to lose x 3,500) / (deficit x 7). The bar chart shows how steeply the timeline shortens as the deficit grows, while the intake numbers reveal when a gap pushes eating below a healthy floor.

What Should You Do?

A 500-calorie deficit is the common sweet spot: meaningful progress without extreme hunger. A 200 deficit is very gentle and easy to keep but slow. A 1,000 deficit is fast but often drops intake under 1,200-1,500 calories, which is hard to sustain and best done with professional supervision. Match the deficit to how long you can stay consistent, not just to speed.

Frequently Asked Questions

Which deficit is safest?

Around 500 calories a day keeps intake in a healthy range for most adults and is sustainable. Larger gaps need supervision.

Why is 1000 so much faster?

Double the gap of 500 means roughly half the time, by the linear 3,500-calorie rule, but at the cost of harder adherence.

Is a 200 deficit worth it?

Yes if you value ease and permanence; it is slow but you may never feel deprived, which helps long-term maintenance.

What if my intake goes too low?

If a deficit pushes you under about 1,200-1,500 calories, widen the timeline or add activity instead of eating less.

Does exercise change these numbers?

Exercise raises your maintenance, so the same food deficit leaves a larger true gap. The calculator models food intake from resting-plus-activity estimates.