Weight Loss Timeline Calculator

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See how long it will take to reach your goal weight at a safe weekly rate, with your estimated goal date, weeks to go and required daily calorie deficit.

kg
kg
0.5–1% of body weight per week is a sustainable, healthy pace.
Estimated goal date –
Weeks to goal –
Total to lose –
Required daily deficit –
Assumes a steady rate using 7,700 kcal per kg (3,500 per lb) of body weight. Real progress varies — pair a moderate deficit with exercise and consult a professional.

About Weight Loss Timeline Calculator

The weight loss timeline calculator shows how long it will take to reach your goal weight at a steady weekly rate. Enter your current weight, goal weight and the amount you plan to lose each week, and it returns your estimated goal date, the weeks remaining and the total to lose.

It also computes the required daily calorie deficit, using the standard conversion of roughly 7,700 kcal per kilogram of body weight (3,500 kcal per pound). Losing 0.5 kg per week, for example, means averaging about a 550 kcal daily deficit through diet, activity or both.

A sustainable pace is 0.5–1% of body weight per week — the input hint reminds you of it. The tool is free, works in metric or imperial, and its projections are estimates rather than medical advice.

How to use Weight Loss Timeline Calculator

  1. Select metric or imperial units.
  2. Enter your current weight and your goal weight.
  3. Set your planned weekly rate of loss (0.5–1% of body weight is sustainable).
  4. Read your estimated goal date, weeks to goal, total to lose and required daily calorie deficit.

Frequently asked questions

Your weekly rate is converted to energy at 7,700 kcal per kg (3,500 per lb) and divided by seven. A 0.5 kg weekly loss therefore requires roughly a 550 kcal average daily deficit.

About 0.5–1% of your body weight per week for most people. Faster rates demand steep deficits that are hard to sustain and increase muscle loss; enter different rates to see the deficit each one requires.

Rarely. Water shifts, plateaus and metabolic adaptation make real loss uneven, and your calorie needs drop as you get lighter. Treat the goal date as a planning estimate and reassess monthly.

It is a widely used approximation for body-fat energy content. Actual loss includes some water and lean tissue, so the true energy per kilogram varies — another reason projections drift over time.

These figures are general estimates, not medical advice. Pair a moderate deficit with exercise, and talk to a doctor or dietitian before aggressive weight loss — especially with any medical condition.
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