Yes, pumping burns the same amount of calories as breastfeeding. Whenever you nurse or pump, the milk production looks the same and requires the same amount of energy.
Suppose you want to know how many calories you burn while pumping. In that case, you need to remember how many months you've already been lactating:
≤6 months – 330 kcal/day.
>6 months – 400 kcal/day.
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