One of the most common questions from new parents — and one that's easier to answer than you'd think. Here's a practical guide to how many diapers you actually need, how usage changes as your baby grows, and how to avoid buying too many in the wrong size.
How many diapers per day does a newborn need?
Newborns have tiny bladders and bowels — they pee and poop often. Count on:
|
Age |
Diapers per day |
Per month (approx.) |
|
0–4 weeks |
8–12 diapers |
240–360 |
|
1–4 months |
6–8 diapers |
180–240 |
|
4–9 months |
5–7 diapers |
150–210 |
|
9+ months |
4–6 diapers |
120–180 |
Tip: The Bammies subscription includes 150–216 diapers per month depending on size — designed to cover a full month's supply for most age stages.
How many diapers should you buy in advance?
The most common mistake is buying too many diapers in the same size. Newborns grow fast — sometimes they go up a size within a couple of weeks.
• Newborn (The Mini): Buy no more than 2–3 packs in advance. Many babies skip the first size entirely if they're born weighing over 4 kg.
• The Newborn and up: Safer to buy more, but hold off on stocking up too heavily until you know how fast your baby is growing.
• Subscription: The easiest way to always have the right size at home. You can adjust the size before every delivery.
Heads up! Never buy six months' worth of a single size. Newborns can change size every 4–6 weeks during the first few months.
Which diaper size fits a newborn?
The Bammies size guide is based on weight:
• Size 1 (The Mini): up to 5 kg — for the very smallest
• Size 2 (The Newborn): 4–7 kg — fits most newborns
• Size 3 (The Baby): 6–9 kg — the most common size for babies 1–6 months
Not sure? Go with the size that matches your baby's current weight. A diaper that's slightly too big fits better than one that's too small.
Do you save money with a diaper subscription?
With the Bammies subscription, you pay 679 kr/month for 150–216 diapers. That works out to roughly 3.50–4.50 kr per diaper. Without a subscription, a Bammies diaper costs about 5 kr each.
Over a year of full use, the difference can add up to 2,000–3,000 kr — and you never have to remember to reorder.
How do you know when it's time to go up a size?
• The diaper leaves marks on the skin around the tummy or thighs
• The diaper leaks even though it isn't full
• Your baby seems bothered by the diaper
• Your baby's weight is above the weight limit listed for the size
