Goal weight timeline
Enter current and goal weight in either kg or lb. Use a planned daily calorie deficit (for weight loss) or surplus (for gain) to estimate pace and timeline.
How weight-change timelines are estimated
Energy balance over time
This tool sketches how long a weight change might take given a calorie surplus or deficit assumption. Real bodies adapt: metabolism, water, glycogen, and adherence all move. Treat the timeline as a planning sketch, not a promise.
Worked example
A steady daily deficit that theoretically equals about 0.5 kg of fat mass per week will often show a multi-week path to a goal — interrupted by plateaus and noise on the scale.
Common mistakes
- Stacking aggressive deficits that are not sustainable.
- Ignoring strength training’s effect on scale weight vs fat loss.
- Changing five variables at once and blaming “the formula.”
FAQs
- Where do calorie needs start?
- BMR & TDEE and the guide BMR, TDEE, and deficits.
When this page helps
Use it when you want a transparent, browser-side calculation with the assumptions spelled out — then verify anything high-stakes against primary docs, a professional, or your own measurements. The related links below point to sibling tools and longer guides when you need more context.
Accuracy notes
Results depend entirely on the numbers you enter and the simplified model described above. Device clocks, tape measurements, market rates, and recipe conventions can all differ from a perfect textbook case. If an output looks surprising, re-check units first, then re-read the formula section.
Related: BMR & TDEE, Macros, Protein.
Last updated: July 2026