Cloth Nappy Sizing may look a little confusing when various brands may use different terminolgy. Here is our handy guide all about cloth nappy sizing. It is important to check the guidelines from the brand when buying your cloth nappies to make sure it will fit your child but this guide will help with help you with the different types.

You will most commonly come across the phrase ‘Birth to Potty’ but this may also be referred to as ‘One Size’. These nappies will be size adjustable most often using snaps on the front of the nappy to make it smaller and bigger. It covers the widest range of sizes from around 4.5kg to 16kg or 10lbs to 35lbs. These are ones that will last for the majority of your baby/toddler nappy journey.

The majority of babies are born smaller than the “Birth to Potty” nappies and while ‘Birth to Potty’ is called this, for most a smaller size is needed for the first few weeks. This is called ‘Newborn’ and tends to fit babies from 2kg to 5.5kgs or 4.5lbs to 12lbs. These ones are suitable normally from when they are born until they are able to fit in to the Birth to Potty/ One Size.

Some manufacturers believe that a better fit and therefore greater comfort and less possibility of leaks and other problems can be achieved if the cloth nappy sizing is broken down into more, smaller ranges. You may find these described as Small, Medium, Large and Extra Large or 1, 2 and 3. Unfortunately these two methods aren’t exactly equatable.

Small is usually interchangeable with Newborn: Up to 5 or 6kg/11 or 12lbs
Medium: Up to 10kg/22lbs
Large: Up to 13kg/28lbs
Extra Large: 12kg/26.5lbs and above.
Size 1-3

1 is usually a rough bridge between Newborn and Birth to Potty: 3-9ks/7-20lbs
2: 9-16kgs/20-35lbs (A size 2 is often appropriate for a large portion of the ‘Birth to Potty’ size range.
3: 16kgs/35lbs and above.

Extra Large and Size 3 are found in nappies that are appropriate for night time or maximum absorbency use as most children will be out of nappies or needing considerable absorbency before they hit this weight range. Certain brands manufacture nappies that are larger than this to suit older children, teens and adults.