Estimate daily calories for weight gain, calorie surplus, and how long it may take to reach a target weight. This free weight gain calculator supports US and metric units and shows practical weight gain targets in one place.
Maintenance first:
This calculator estimates maintenance calories from BMR and activity level.
Calorie surplus:
Your chosen weekly gain pace is converted into a daily calorie surplus.
Target calories:
Daily calories for weight gain are estimated from maintenance plus the daily surplus.
Timeline estimate:
The total weight to gain is divided by the chosen weekly pace to estimate time to goal.
A weight gain calculator can turn a general goal into a practical calorie target and time estimate. It helps show how maintenance calories, calorie surplus, and target weight work together.
It can make planning more realistic and easier to track over time.
Your result shows estimated maintenance calories, your suggested daily calories for weight gain, the daily calorie surplus, and an estimated time to reach your target weight.
This gives you a practical starting point for planning a weight gain phase.
That depends on your maintenance calories and how fast you want to gain weight. This calculator estimates both.
That depends on your daily calorie surplus and how consistent your progress is over time.
Not always. A slower pace is often easier to control and may be preferred when aiming for leaner gain.
Real progress can vary because body weight changes are influenced by water, routine, adherence, and other factors.