Free fitness tool

Weight-Loss Timeline Calculator

Estimate how many weeks your target may take.

Enter your details

How this calculator works

Timeline equals desired weight change divided by planned weekly change.

How to use your result

Keep your inputs consistent and compare weekly trends. Make small changes only after enough data accumulates.

Important limitation

Calculator results are estimates. Pregnancy, eating disorders, medical conditions, injuries, or concerning symptoms require qualified professional guidance.

Methodology sources

Turn these numbers into a plan

RizzFit builds your workouts, calories, and macros around your goal — and adapts as you progress.

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