How many diapers does a newborn need? Counts by size and month

Diaper sizes by weight: three makers compared

Diapers are sized by weight, not age, and each maker sets its own ranges ^[3][4]. Here's what three of them publish:

What to take from it:

• Ranges overlap. A 13-lb baby fits Size 1 or Size 2 on all three charts. Huggies and Pampers both say to check the fit when your baby is between sizes ^[3][4].
• Pampers runs wider. Its Size 2 spans 10 to 22 lb, while Huggies and Kirkland Signature use 12 to 18 lb ^[4][3][10]. Check the package of the product you're buying.
• Not every brand makes a newborn size. The Kirkland Signature listings we found at Costco cover Sizes 1 through 7 ^[10][11].
• Fit beats the number. Huggies lists signs it's time to size up: red marks on the tummy, thighs or waist, no room for two fingers under the waistband, a diaper that doesn't cover the bottom, and more leaks or blowouts ^[3]. Pampers adds that sizing up too soon can cause leaks too ^[4].

How many of each size for the first year (our estimate)

We didn't find a public health source with a per-size count for the first year, so we built one. It's an estimate, not a shopping list. Here's how:

1. Timing. We used the median weight-for-age figures from the WHO growth standards that the CDC publishes, averaging boys and girls ^[12]. We assumed a baby moves up at the middle of each size's overlap on the Huggies and Kirkland Signature charts: 9 lb for Size 1, 13 lb for Size 2 and 17 lb for Size 3 ^[3][10][11].
2. Daily use. The low end uses Huggies' average per day for each size, and the high end uses Pampers' up-to figure ^[3][4].

A few notes on the numbers:

• Size 3 carries a typical baby to the first birthday. The WHO median at 12 months is 21.3 lb for boys and 19.7 lb for girls ^[12], below the 22-lb start of Size 4 on the Huggies chart ^[3].
• Real babies vary. On the WHO medians, boys reach 13 lb at about 2.4 months and girls at about 3.1 months ^[12]. A big baby may skip newborn size, and a small one may start in preemie diapers.
• The makers' guesses land close to ours. Huggies estimates about 1 month in newborn size, 1.5 months in Size 1, 3 in Size 2 and 7 in Size 3 ^[3]. Pampers estimates 1.6, 1.7, 2.8 and 5.8 months ^[4].

How many diapers to buy before the baby comes

Our suggestion: about 100 to 140 newborn-size diapers, which covers roughly 10 days to 2 weeks at 10 a day, plus one pack of Size 1. Pampers suggests a similar start, 2 to 3 packs or 1 to 2 large boxes of newborn size, with both newborn and Size 1 on hand before the birth ^[2].

Why not to stock up heavily on newborn size:

• It doesn't last. Pampers says most babies wear newborn size for 2 to 4 weeks ^[2], and Huggies says many outgrow it within the first month or two ^[3]. By our math, a median-weight baby is ready for Size 1 at about 3 weeks.
• Some babies skip it. Size 1 starts at 8 lb on all three charts above. On the WHO standard, a quarter of baby boys weigh more than 8.1 lb at birth ^[12]. Pampers notes that some babies skip newborn size, depending on birth weight and fit ^[2].
• The big numbers come later. Sizes 2 and 3 make up about 7 in 10 of the diapers in our first-year estimate. If people ask what to bring to a shower, Size 2 and Size 3 are the safer ask.

Keep extra packs sealed and hold on to receipts, so you can swap them for a bigger size if the store allows it. For everything else on your list, see our baby registry checklist. For what to pack when you leave the house, see our diaper bag checklist.

Wipes: a rough count

We didn't find a public health source that gives a wipes count, so this one is our estimate. Assume 2 to 3 wipes per change, more for a big poop. At 8 to 10 changes a day, that's 16 to 30 wipes a day, or about 500 to 900 a month in the newborn weeks. Over the first year, with our 1,960 to 2,860 changes, it comes to roughly 4,000 to 8,600 wipes.

For your baby's skin, the AAP suggests wipes free of alcohol and fragrance, or water with a gentle, non-soap cleanser ^[13]. It also says to change diapers often, since a wet or dirty diaper left on too long can chafe the skin. If a diaper rash isn't better after two to three days of treatment, or comes with a fever, call your pediatrician ^[13].

Cloth vs disposable

Both work. The choice comes down to your laundry setup, your child care and your budget.

• Absorbency. The AAP says disposables are very absorbent and may need changing less often. Cloth is less absorbent, needs changing more often, and usually goes under a waterproof cover ^[7].
• Environment. The EPA estimates that 4.1 million tons of disposable diapers, counting adult incontinence products, were thrown out in 2018. That's about 1.4% of all municipal solid waste, and the EPA found no significant recycling or composting of them ^[14]. Cloth has its own footprint: the AAP notes it can use significantly more water and create more waterborne waste, and says it's not clear either one has the bigger impact ^[7].
• Child care. NDBN says most child care centers require parents to send a day's supply of disposable diapers, four to six changes for most children ^[1]. Ask your center before you commit to cloth.
• Cost. NDBN calls cloth a cost-effective way to diaper a child, though not a fit for every family, and many of its member diaper banks run cloth diaper programs ^[15].

If diapers strain your budget

You're far from alone. Nearly 1 in 2 U.S. families with young children can't afford enough diapers to keep their child clean and dry, according to NDBN's 2026 Diaper Check, and 1 in 4 parents miss work or school because they can't afford the diapers child care requires ^[15]. In 2024, NDBN put the cost at $80 to $100 or more a month per baby ^[1].

The big federal food programs don't pay for diapers. SNAP can't be used for nonfood items, including paper products and hygiene items ^[16]. WIC provides healthy foods, nutrition education, breastfeeding support and referrals ^[17], and NDBN confirms that neither SNAP nor WIC can buy diapers ^[15]. TANF cash assistance can be spent on diapers, but NDBN says only 23% of families below the federal poverty level get it ^[15].

What does help: diaper banks, some Medicaid health plans and a few state programs. Our guide to free diapers lists them and how to reach them. WIC can still stretch your budget by covering some of your family's food; see our WIC page for income limits. For other essentials, see free baby stuff from real programs.

A diaper bank can help, usually through a local partner agency.