Gain Weight Calorie Calculator
Calculate your daily calories to achieve your desired weight. Adjust your targets based on your personal profile and see recommended calorie surplus strategies.
Popular Calorie Surplus Reference Table
| Weekly Target | Recommended Surplus / Day | Expected Weight Gain/Week |
|---|---|---|
| +0.25 kg | ~275 kcal | 0.25 kg (~0.55 lb) |
| +0.5 kg | ~550 kcal | 0.5 kg (~1.1 lb) |
| +1 kg | ~1100 kcal | 1 kg (~2.2 lb) |
| +1 lb | ~500 kcal | 1 lb (~0.45 kg) |
Weight Gain Formula & Steps
- 1. Calculate Basal Metabolic Rate (BMR):
Men: (10 × weight(kg)) + (6.25 × height(cm)) – (5 × age) + 5
Women: (10 × weight(kg)) + (6.25 × height(cm)) – (5 × age) – 161 - 2. Adjust for Activity Level:
TDEE = BMR × Activity Factor (see options above) - 3. Add Calorie Surplus:
Daily Calories to Gain Weight = TDEE + Surplus - 4. To convert units:
1 kg = 2.20462 lbs, 1 in = 2.54 cm
Frequently Asked Questions
- Is a calorie surplus safe for everyone?
- Most healthy adults can use a calorie surplus to gain weight, but those with medical conditions should consult professionals for personal advice.
- How fast should you gain weight?
- Gaining 0.25–0.5 kg (about 0.5–1 lb) per week is considered an optimal pace for most, minimizing fat gain and health risks.
- Why does activity level matter for calorie needs?
- More activity burns more calories, raising your total requirements for healthy weight gain.
- What if I’m not gaining weight despite eating more?
- You may need to revisit your calorie and protein intake, and ensure your activity is not expending your surplus.
- Is resistance training necessary during bulking?
- For muscle-focused gains, resistance training and sufficient protein are essential. Otherwise, most gain can be body fat.
Cultural Notes
- Asian bulking diets often emphasize rice, fish, tofu, and moderate calorie increases; Western styles may focus on dairy, beef, and high-protein snacks.
- Some cultures view rapid weight gain negatively, while others see it as a sign of prosperity or strength.
- Popular calorie-rich snacks differ: e.g. [translate:甜品、水果坚果棒、沙拉配橄榄油] in Asian countries, [translate:peanut butter sandwiches, trail mix, protein shakes] in America.
References
- Hall, K. D., & Guo, J. (2017). Obesity energetics: body weight regulation and the effects of diet composition. Gastroenterology, 152(7), 1718-1727. https://doi.org/10.1053/j.gastro.2016.12.051
- FAO, WHO, & UNU. (2001). Human Energy Requirements: Report of a Joint FAO/WHO/UNU Expert Consultation. FAO Food and Nutrition Technical Report Series 1. http://www.fao.org/3/y5686e/y5686e.pdf
- Mifflin, M.D., et al. (1990). A new predictive equation for resting energy expenditure in healthy individuals. Am J Clin Nutr. 51:241-247.
- CDC. (2024). Healthy weight gain. Centers for Disease Control and Prevention. https://www.cdc.gov/healthyweight/healthy_eating/gaining_weight.html
- Mayo Clinic. (2022). Calorie calculator. https://www.mayoclinic.org/healthy-lifestyle/weight-loss/in-depth/calorie-calculator/itt-20402304