Goal Weight Date

Free Goal Weight Date calculator with clear step-by-step results.

About Goal Weight Date

Time to goal depends on the total energy deficit and how fast you create it.

Formula

Weeks = (kg to lose × 7,700) ÷ weekly deficit

Worked example

With the default values below, Goal Weight Date returns Weeks to Goal of 17.6. Change any input above and every figure here is recalculated in your browser.

Inputs used

Current weight (kg)minimum 0 kg: 80 kg
Goal weight (kg)minimum 0 kg: 72 kg
Weekly deficit (kcal)minimum 0 kcal: 3,500 kcal

Results

Weeks to Goal: 17.6
Months to Goal: 4.1
Total Deficit Required: 61,600.00 kcal

Step by step

1Values used
2Formula
3Weeks to Goal= 17.6
4Months to Goal= 4.1
5Total Deficit Required= 61,600 kcal

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Estimates are general guidance — consult a healthcare professional for personal medical advice.
This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Estimates are general guidance — consult a healthcare professional for personal medical advice.

Frequently Asked Questions

How does this calculator work?