Lose fat
Weight Loss Calculator
Free weight loss calculator: estimate a week and date range to a goal weight using conservative weekly rates, not a promised deadline.
How the weight loss calculator works
Each week’s projected loss is a percentage of that week’s projected weight: 0.5%, 0.75%, or 1.0%. The tool does not subtract the same number of pounds forever. Faster rates finish sooner and are harder to hold. The output is a week range and a date range, labeled as estimates, not a promised deadline.
How this is calculated
- Planning rates are a product convention so the projection stays proportional as weight drops.
- Use the calorie and protein tools next if you want numbers for the block itself.
For the method in plain language, read how long fat loss takes.
Questions
How does a weight loss calculator work?
ARC’s weight loss calculator projects a week and date range to a goal weight. Each week’s loss is 0.5%, 0.75%, or 1.0% of that week’s projected bodyweight, not a fixed number of pounds. The output is a planning range, not a promised deadline. How long fat loss takes.
How long does it take to lose 20 lb?
It depends on starting weight and the weekly rate you can hold. ARC applies 0.5%, 0.75%, or 1.0% of that week’s projected weight, so the same 20 lb is a different week range for different people. Run the weight loss calculator instead of using a generic 20-lb calendar. How long fat loss takes.
Is losing 1% of bodyweight per week realistic?
It is the fastest planning rate in this tool, not a requirement. Faster rates finish sooner and are harder to hold. Many people plan on 0.5% or 0.75% so the week range stays something they can actually follow.
Why does the projected weekly loss change over time?
Each week’s loss is a percentage of that week’s projected weight, not the same number of pounds forever. As the projection gets lighter, the weekly pound drop shrinks slightly. That is why the output is a week range, not one deadline.
Is a weight-loss calculator exact?
No. The dates are estimates for planning. Sleep, adherence, medication, and measurement noise all move the real line. Use the calorie deficit calculator next if you want an intake to try during the block.