Weight Gain Calculator — Calculate Healthy Weight Gain Duration

Weight Gain Calculator

Calculate how long it will take to reach your weight gain goals with our comprehensive calculator. Determine optimal nutrition plans based on calorie surplus, metabolism, and activity level.

Step 1: Personal Details

75 kg

Understanding Healthy Weight Gain

A healthy weight gain is typically 0.25-0.5 kg per week. Gaining weight too quickly can lead to excessive fat accumulation rather than muscle growth.

Step 2: Nutrition & Activity

About Calorie Surplus

A calorie surplus of 500 kcal/day typically leads to approximately 0.5 kg weight gain per week. Muscle gain requires proper nutrition and strength training alongside the calorie surplus.

Weight Gain Results

Summary
Surplus Comparison
Nutrition Breakdown

Estimated Time to Reach Target Weight

20 weeks
From 65 kg to 75 kg with 500 kcal/day surplus
Weight to Gain
10.0 kg
Daily Maintenance Calories
2,450 kcal
Daily Target Calories
2,950 kcal
Weekly Weight Gain
0.5 kg/week

Calorie Surplus Time Comparison

Calorie Surplus Daily Calories Time to Goal Weekly Gain

Nutrition Plan Breakdown

Weight Gain Formula

Time (weeks) = Weight to Gain (kg) × 7700 ÷ (Daily Calorie Surplus × 7)

To calculate time to gain weight: Multiply weight to gain by 7700 (calories per kg of body weight), then divide by the product of daily calorie surplus and 7 days.

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