At one week postpartum, many parents pump about 300–450 mL per day, averaging 45–60 mL per session across 8–12 sessions.

At five days postpartum, typical milk output is ~480–720 mL per day, or about 60 mL per feed across 8–12 feeds.

Most established pumpers see about 25–35 oz (750–1,035 mL) per day, with session yield varying by stage and schedule.

With mature milk, expect roughly 2–4 oz per pump, and plan around 25–30 oz per day split across your schedule.

Most pumping parents reach 25–35 oz (750–1,035 mL) per day by week four; a typical session yields 2–4 oz (60–120 mL) from both breasts.

For a newborn, plan ~5–15 mL per feed on days 1–2, rising to ~30–60 mL by week 1 with 8–12 feeds in 24 hours.

For most sessions, expect 60–120 mL (2–4 oz) once supply settles; in week one, 5–30 mL is common from both sides.

Most parents pump 2–5 ounces (60–150 mL) per pumping session once supply is established.

Per pumping session, many parents collect 3–5 oz total; match the volume to baby’s daily intake and your number of sessions.