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Weight Management Calculators

Weight Gain Calculator

Calories and time needed to reach a higher goal weight, with a realistic weekly gain rate.

Enter values

Results update as you type.

Result

Time to goal

32 weeks

Daily calories
2,675 kcal
Daily surplus
275 kcal
Total gain
8 kg

Educational estimate only — not medical advice. Talk to a healthcare professional about your individual situation.

About the Weight Gain Calculator

Calories and time needed to reach a higher goal weight, with a realistic weekly gain rate.

Also known as: how to gain weight, weight gain timeline, bulking calculator.

How to use this calculator

  1. Enter current weight (kg), goal weight (kg), weekly gain, maintenance calories.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

Weeks = kg to gain ÷ weekly gain rate

Worked example

Using the values pre-filled in the calculator above:

  • Current weight (kg) = 62
  • Goal weight (kg) = 70
  • Weekly gain = 0.25 kg
  • Maintenance calories = 2,400 kcal

the calculator returns:

  • Time to goal: 32 weeks
  • Daily calories: 2,675 kcal
  • Daily surplus: 275 kcal
  • Total gain: 8 kg