Weight Loss Calculator
Estimate a calorie target and arithmetic timeline from current weight, goal weight and a chosen deficit without guaranteeing an outcome.
Enter or adjust the values above, then calculate.
Weight Loss: calorie Target & Approximate Timeline
Estimate a calorie target and arithmetic timeline from current weight, goal weight and a chosen deficit without guaranteeing an outcome.
Inputs this tool uses
- Current weight
- Goal weight
- Estimated TDEE
- Daily deficit
What you get
Approximate planning target; about 22 weeks by simple energy arithmetic.
How to use the Weight Loss Calculator
- Enter current weight, goal weight, estimated tdee and the other fields relevant to this calculation.
- Select any method, activity level or option shown on this page, then choose Calculate.
- Read the main result together with the supporting values, method, assumptions and limitations below before using the estimate.
How this calculation works
Calorie-goal tools use arithmetic differences from entered maintenance energy. Any 7,700 kcal/kg weight-change conversion is shown only as an approximation.
Example calculation
The sample values loaded into the calculator produce 1900 kcal/day. This example exists to show how the output is structured; replace the sample values with your own inputs for your calculation.
Assumptions and limitations
- Energy and nutrient outputs are estimates or general reference values, not individualized treatment targets.
- Adult calorie-goal tools should not be used for children, pregnancy or medical nutrition therapy unless the page explicitly supports that life stage.
Sources and review status
Source set last verified 2026-09-25. No clinician review is claimed unless a real named reviewer is displayed.
Questions people ask about Weight Loss Calculator
Is the weight-loss timeline exact?
No. The timeline is an arithmetic planning estimate from the deficit you enter. Real weight change is not linear and the result is not a guarantee.
Connected tools
Continue with the closest related calculation without re-entering sensitive values automatically.
Calculate a target daily intake from TDEE and a user-selected calorie deficit, with conservative adult-only warnings.
Open tool →◐Weight Gain CalculatorEstimate a calorie target and arithmetic timeline from current weight, goal weight and a chosen surplus without promising lean-mass gain.
Open tool →◐TDEE CalculatorEstimate total daily energy expenditure from BMR and a clearly described activity multiplier.
Open tool →