The most accurate way to determine your child's size with Monilo is to measure the foot in cm/in.
The UK/US conversion placed in that table is just an estimation as each brand has slighty different sizing * SHIRLING - please allow an extra 1/2 size more to the shoes you order with the warming shirling.
Here is our Measuring Device that you can print out at home to make sure you MEASURE YOUR CHILD'S FOOT CORRECTLY.