---
title: "UK nappy size helper | BabyNido"
description: "Match UK disposable nappy size to weight using typical brand charts. Not a clinical protocol. Works without JavaScript."
url: "https://babynido.co.uk/tools/nappy-size"
---

-   [Home](/) 
-   /  [Tools](/tools) 
-   /   UK nappy size helper  
     
# UK nappy size helper
 

By [Hannah Cole](/author/hannah-cole)
· Published 13 August 2026
· Last updated 13 August 2026 
 

Manufacturer-style starting map, not a clinical protocol. Brand charts disagree at the edges. Read
[nappies and wipes](/guides/nappies-and-wipes-uk).

     
Verdict
 
Enter the baby’s weight and this map suggests a typical UK disposable size band. Brand charts disagree at the edges, so buy a small pack and watch leaks at the waist. It is not a medical device. Skip it if you already restock a size that fits, or if you use cloth with its own rise system.
 
 Not for:  Not for cloth nappies, and not a reason to ignore a rash that needs a pharmacist.
        Baby’s weight (kg)     Suggest a size band  

     
## What nappy size should you start with if JavaScript is off?
 

Use the table. Many babies skip the tiniest newborn pack. Buy small, watch leaks at the waist, and keep the next
        size ready. Charts overlap on purpose. Cloth nappies use rise, not this map. A rash that needs a pharmacist is
        not a size problem — see [nappy cream](/guides/nappy-rash-cream-uk).

    Typical UK disposable bands (checked against common brand charts, 13 Aug 2026)       Size   Typical weight   Notes           Newborn   Up to about 4.5–5 kg   Many babies skip this pack. Buy small.      Size 1   About 2–5 kg   Often the real first pack if they are not tiny.      Size 2   About 3–8 kg   Common restock once newborn leaks at the waist.      Size 3   About 6–11 kg   Toddler band; brands disagree at the edges.      Size 4   About 9–14 kg   Watch the navel and thigh marks, not the bag art.      Size 5   About 11–16 kg   Still a disposable decision, not potty timing.      Size 6   About 13 kg and up   Brand charts split here. Buy a small bag first.             Also browse  [All tools](/tools)[Guides](/guides)[Skip-list](/skip)[Shop kit](/products)     
## Guides that use this tool
   -    [   
planning
 
Nappies and wipes UK: first packs
 
Newborn nappies and wipes in the UK: first pack sizes, disposable vs cloth, fragrance-free wipes, and listings to compare — not a jumbo mixed gift box.
 ](/guides/nappies-and-wipes-uk)   
-    [   
care
 
Baby wipes UK: which pack first
 
Baby wipes in the UK: WaterWipes vs own-brand, fragrance-free packs, cotton wool, and Amazon listings to compare — skip scented and alcohol wipes.
 ](/guides/baby-wipes-uk)   
-    [   
care
 
Nappy cream UK: barrier not cure
 
Nappy rash cream in the UK: Bepanthen vs Metanium, what the NHS wants first, and listings to compare — skip talc, and see a pharmacist if it is not improving.
 ](/guides/nappy-rash-cream-uk)   
-    [   
clothes
 
UK baby clothes sizes
 
UK baby clothes sizes from newborn to 18–24 months: how many sleepsuits, when to size up, and why age bands are not a law.
 ](/guides/baby-clothes-sizes-uk)