Gain Calculator – Find Profit Gain Percentage & Amount
The Weight Gain Calculator helps you estimate the daily calorie surplus and timeframe required to gain weight or muscle mass. Whether you’re bulking for bodybuilding, recovering from weight loss, or trying to build lean muscle, this tool provides personalized planning.
How to Use the Weight Gain Calculator
Enter the following information:
- Your current weight
- Your target weight
- Desired time period (weeks/months)
- Activity level (sedentary, moderate, active)
The calculator estimates the total and daily calorie surplus required to meet your goal weight within your timeframe.
Weight Gain Formula
1 pound of weight ≈ 3,500 calories
Required Surplus = (Target Weight − Current Weight) × 3,500
Daily Surplus = Total Surplus ÷ Days
Example
Goal: Gain 5 kg (~11 lbs) in 8 weeks
→ Surplus Needed = 11 × 3,500 = 38,500 calories
→ Daily Surplus = 38,500 ÷ 56 = ~688 calories/day
Add 688 calories to your daily maintenance intake.
Common Use Cases
- Bodybuilding bulking phases
- Weight gain after illness or underweight conditions
- Nutrition planning for hard gainers
- Creating mass-gain meal plans
- Tracking realistic weight gain progress
Why Use a Weight Gain Calculator?
Gaining weight isn’t just about eating more — it’s about strategic calorie surplus over time. This calculator removes guesswork and gives a clear, realistic path to your ideal physique.
Frequently Asked Questions (FAQs)
Can I use this for muscle gain?
Yes, especially if you’re combining a surplus with resistance training and protein intake.
How fast should I try to gain weight?
Ideally, 0.25 to 0.5 kg per week for lean muscle gain. Faster gains can lead to fat gain.
Does it include protein or macro breakdowns?
This tool focuses on calories. For macros, use a macro calculator.
What if I’m underweight?
This tool is perfect for helping underweight individuals set and achieve healthy weight goals.
Can women use this tool?
Yes, it is gender-neutral and effective for both men and women with weight gain goals.
Related tools: BMR Calculator, Calorie Calculator, Macro Calculator.