Why nappies matter so much in the early weeks
When a baby is breastfed you cannot see how much milk they take, and even with bottles the amount on the side of the bottle does not tell the whole story. What goes in has to come out, which is why midwives and health visitors so often ask about nappies.
The NHS uses nappies, together with weight gain and how content your baby seems after feeds, as practical signs that feeding is going well. None of these signs is perfect on its own. Taken together, over a day, they give you and your health professional a reliable picture.
Wet nappies: what to expect
From about day 5, the NHS says to expect at least 6 heavy, wet nappies every 24 hours. “Heavy” is the important word: modern disposable nappies are very absorbent, so a wet nappy may not look obviously wet. Many parents learn what “heavy” feels like by comparing a used nappy with a clean one in their hand.
In the first few days, before day 5, there are usually fewer wet nappies, and the number builds as feeding becomes established. Your midwife will talk to you about what to expect for your baby in those very first days.
- Count wet nappies across a full 24 hours rather than judging from a single morning.
- A nappy that is both wet and dirty counts as wet as well.
- If the count is lower than expected, mention it to your midwife, health visitor or GP the same day.
Dirty nappies: what to expect
After the first few days, the NHS says to expect at least 2 soft, yellow poos a day. In the very first days, poo changes as your baby’s feeding settles; your midwife can explain what is usual at each stage.
Two points are worth knowing. First, “soft” matters as well as the number: the expectation is soft poo, not hard pellets. Second, the NHS lists a newborn who has not pooed in 24 hours as a reason to get advice. That is not a cause for panic, but it is a cause for a call.
Poo colour and texture vary, and this page does not try to interpret every shade. If something about your baby’s poo worries you, describe it to a health professional — a photo can help.
Nappies as a sign of dehydration
Nappies are also part of how the NHS describes dehydration in babies. Fewer wet nappies, a dry mouth, sunken eyes or no tears when crying are signs of dehydration. This matters especially when your baby is unwell — for example with a high temperature — because illness can reduce how much they feed.
If your baby has a high temperature, keep breastfeeding or giving formula as usual and look out for those signs. Fewer wet nappies together with a temperature or a baby who is not feeding is a reason to get urgent advice.
How to keep track without counting in your head
At 4 a.m., after a cluster-feeding evening, few parents can say with confidence whether today has had five wet nappies or seven. When care is shared, it is even harder: the morning nappies were changed by one person and the afternoon ones by another.
Some practical options families use:
- A tally on a sheet of paper next to the changing mat.
- A note on your phone, updated at each change.
- A shared care diary that everyone looking after the baby can add to.
Whatever you choose, record the time and whether the nappy was wet, dirty or both. That gives you a daily count you can share when your midwife or health visitor asks.
Zaripo is being prepared as a shared care diary that records the time and type of each change — wet, dirty or mixed — beside feeds and sleep, with a daily count. It counts only what you record: it does not interpret nappy colour, diagnose dehydration or decide whether a count is healthy. An empty day means nothing was logged, not that no changes happened.
Nappy rash and skin care
Frequent nappies mean frequent changes, and the skin under a nappy can become red and sore. Changing wet or dirty nappies as soon as you can is one of the main ways the NHS suggests preventing nappy rash. Our answer on nappy rash covers what helps and when to see a professional.
When to get help
Get urgent advice — contact a GP, health visitor or midwife, or NHS 111 in the UK — if:
- Your baby has fewer wet or dirty nappies than expected, or a newborn has not pooed in 24 hours.
- Your baby has signs of dehydration, such as fewer wet nappies, a dry mouth, sunken eyes or no tears when crying.
- Your baby is very sleepy and hard to wake for feeds, or is not feeding.
- Your baby is under 3 months old and has a temperature of 38°C or more.
Outside the UK, use your local doctor, health line or emergency number. Trust your instincts: if you are worried about your baby, get help.
Questions parents also ask
How many wet nappies is normal for a newborn?
From about day 5, the NHS says to expect at least 6 heavy, wet nappies every 24 hours. In the first few days there are usually fewer, building up as feeding becomes established.
How many poos a day should a newborn have?
After the first few days, the NHS says to expect at least 2 soft, yellow poos a day. A newborn who has not pooed in 24 hours should be checked with a midwife, health visitor or GP.
How can I tell if a disposable nappy is wet?
Modern nappies absorb a lot, so look for a “heavy” nappy. Comparing a used nappy with a clean one in your hand is a simple way to learn the difference.
Does a mixed nappy count as one wet and one dirty?
A nappy that is wet and dirty shows both. When you keep a count, record it as mixed so it appears in both your wet and dirty totals.
Can an app tell me if my baby is dehydrated?
No. A diary can show how many nappies were recorded, but it cannot diagnose dehydration. Signs such as fewer wet nappies, a dry mouth, sunken eyes or no tears need a health professional’s advice.