How many extra calories for breastfeeding?
330 extra calories for 0-6 months; 400 for 6-12 months of exclusive breastfeeding.
Health Fitness
Breastfeeding Calorie Calculator
Calculate breastfeeding calorie with your details.
Personalized estimate
Use realistic inputs for the most useful results.
What this calculator does
Breastfeeding increases calorie needs by 330-400 calories daily (early vs late lactation). The calculator uses Mifflin-St Jeor BMR plus lactation adjustment.
How it works
Calculate BMR using Mifflin-St Jeor, add activity factor for TDEE, then add 330-400 calories for milk production.
Formula
Breastfeeding Calories = TDEE + 330 (0-6 months) or + 400 (6-12 months).
Tips for using this calculator
- Don't restrict calories severely while breastfeeding
- Stay well-hydrated—milk production requires extra fluids
- Focus on nutrient density, not just calories
- Gradual weight loss (0.5 lb/week) is safe while nursing
- Monitor milk supply when changing diet
Frequently asked questions
Is it safe to diet while breastfeeding?
Moderate weight loss (0.5 lb/week) is safe. Avoid severe restriction which can affect milk supply.
Why does calorie need increase later?
Babies consume more milk as they grow, requiring more energy for production.