Count on 8 to 12 nappies a day for a newborn. Around 3 months that becomes 6 to 8, from six months 4 to 6, and for a toddler 4 to 5 a day. Over the first year you will change roughly 2,000 to 2,500 nappies. Wet nappies are also a health signal: from the first week there should be about six a day.
What to remember
- Newborn: 8 to 12 a day. That gradually drops to 4 to 5 for a toddler.
- From around day five, six wet nappies a day signal good feeding.
- Do not hoard size 1: many babies outgrow it within weeks.
- Move up a size at leaks, red marks or tabs that barely close.
How many nappies does a baby use per age?
Every child differs, but the pattern is predictable: many at the start, gradually fewer as the bladder grows and feeds spread out.
- 0 to 1 month: 8 to 12 nappies a day; change around every feed.
- 1 to 3 months: 8 to 10 a day.
- 3 to 6 months: 6 to 8 a day.
- 6 to 12 months: 4 to 6 a day.
- 1 to 2.5 years: 4 to 5 a day, until potty training comes into view.
- First year total: roughly 2,000 to 2,500 nappies.
What do wet nappies say about your baby's feeding?
In the first weeks the nappy is your best measuring tool. From around day five, about six properly wet nappies a day should land in the bin; that is the sign your baby is getting enough. In the very first days there are fewer, which is normal.
If wet nappies structurally lag behind, the urine looks dark or you worry about drinking or growth, discuss it with your midwife, maternity nurse or health clinic. These numbers are a guideline, not a diagnosis.
How often do you change, including at night?
During the day the simplest rhythm is: change around every feed, and dirty nappies always straight away. Let the bottom dry properly before the clean nappy goes on; that prevents most nappy rash.
At night a merely wet nappy does not need changing if your baby sleeps through; modern nappies handle that fine. A dirty nappy you do change immediately, at night too. Keep supplies within arm's reach so the night change stays short and calm.
Which size do you choose and when do you move up?
Nappy sizes run on weight, not age. Size 1 covers the first weeks; many babies are in size 2 within three to six weeks. So buy one box of the smallest size and see how it goes.
Move up at these signals: the nappy leaks regularly, leaves red marks on belly or legs, the tabs barely meet any more, or your baby's weight is near the top of the size range. One size up is almost always more comfortable and more leak-proof.
How much do you stock and what does it cost?
Smart buying: one box of size 1, two boxes of size 2, and top up on offers once you know which brand fits. Every baby is shaped differently; the brand that fits the neighbour's baby perfectly may leak on yours.
Expect tens of euros per month on disposables in the first year, depending on brand and offers. Washable nappies are cheaper per change after the initial purchase and cut waste; many parents combine: washable at home, disposable on the go and at night.
When do you no longer need nappies?
Most children become dry during the day somewhere between ages 2 and 4; nights often take longer. Interest in the potty, a dry nappy after sleep and announcing a full nappy are signs you can start practising.
Until then: do not buy too far ahead in big sizes. The leap to potty training sometimes comes faster than the stock runs out.
Frequently asked questions
How many size 1 nappies should I have in the house at the start?
One box (often around 70 to 100 pieces) is enough to begin with. Many babies grow into size 2 within three to six weeks, and you first want to know whether the brand fits well.
How many nappies does a baby use in the first year?
Roughly 2,000 to 2,500. The first quarter is the busiest at 8 to 12 a day; by the first birthday you are at around 4 to 6 a day.
Should I change my baby at night?
For wetness alone usually not, if your baby sleeps through; a dirty nappy you change immediately. Keep the night change short and dimly lit, and everyone falls back asleep faster.
My baby has few wet nappies. When do I raise the alarm?
From around day five, six wet nappies a day is the rule of thumb. If you are structurally below that, the urine is dark or your baby feeds poorly, contact your midwife, maternity nurse or health clinic.
When do I move to a bigger nappy size?
At regular leaks, red marks on the skin, tabs that barely close or a weight near the top of the size range. When in doubt, the bigger size usually fits better.
Are washable nappies cheaper than disposables?
After the initial purchase, yes: per change you pay less and a set often lasts several children. Do count the laundry, and know that combining (washable at home, disposable on the go) is very common.
Sources and review
This guide follows the changing and potty training information from Stichting Opvoeden and the NHS advice on nappy changing. Numbers are averages, not individual medical advice. Last content review: 16 July 2026.
