Sizing

How to Measure Your Foot at Home (EU, US and UK Size Conversion)

Measure your foot at home in five minutes, then convert to EU, US and UK sizes. Includes an approximate chart for EU 36 to 41.

By ADAMUMU · 2026-10-18

Ordering shoes online is easy when you know your size and stressful when you do not. The good news is that a ruler, a pencil and a sheet of paper are all you need to measure your foot at home. This guide shows the method and gives an approximate conversion between EU, US and UK sizes.

Quick answer: stand on a sheet of paper with your heel at a wall, mark your longest toe, measure in centimetres and add 0.5 to 1 cm. Then match the number to the chart below.

What you will need

A sheet of paper larger than your foot.
A pencil or pen.
A ruler or tape measure in centimetres.
A flat floor and a wall.

Step by step

Measure in the late afternoon or evening, when feet are at their largest.
Place the paper on a hard floor with one edge against the wall.
Stand on the paper with your heel touching the wall and your weight evenly distributed.
Mark the tip of your longest toe. It is not always the big toe.
Measure from the paper edge to the mark. This is your foot length.
Repeat with the other foot. Most people have one foot slightly larger, so use the larger measurement.

For width, mark the widest part of your forefoot on the paper and measure straight across. If your foot is wide, consider the roomier size and see our guide to flats for wide feet.

Add a little room

The measurement is your foot, not the inside of the shoe. Shoes need some extra space so your toes can move. Add roughly 0.5 to 1 cm to your foot length when choosing the size, then compare with the size chart. If the result falls between sizes, think about the larger one, especially for styles without adjustable fastenings.

EU, US and UK size chart with foot length

Sizing varies slightly by brand and country, so treat these numbers as a starting point only. Women's sizes:

EU size	US (women's)	UK
EU 36	5	3
EU 37	6	4
EU 38	7	5
EU 39	8	6
EU 40	9	7
EU 41	10	8

Shop ADAMUMU flats in EU 36–41: Mary Janes, ballet flats, loafers, slingbacks and mules. Shipping is $3.99 worldwide and free on 2+ pairs, with 30 days to exchange or return.

For ADAMUMU shoes, always use the official size chart rather than any general table, because it is the one that matches our products.

If you shop from the US or UK and need the full explanation of how the three systems differ, read EU shoe sizes explained for US and UK shoppers.

Common measuring mistakes

Measuring in the morning, when feet are smaller.
Letting the pencil lean inward, which makes the outline too small. Hold it straight.
Measuring only one foot.
Relying on the size of your old shoes, which may be worn, stretched or the wrong fit.

Check the fit when it arrives

Try your pair on indoors. You should be able to wiggle your toes, your heel should stay in place, and nothing should pinch. If something feels off, compare your measurement again before wearing them outside. For more detail on avoiding returns, read our guide to finding your flat shoe size.

Keep a record

Once you have your measurements, write them down or save a photo of the paper outline. Note the length and width of both feet, the date, and the size you chose from each brand's chart. Next time you shop online, you will not need to measure again, and you will quickly see if your numbers have changed. Feet can alter over time, so repeat the process every year or two, and after pregnancy, a change in activity or a long period of weight change.

Order with confidence

Once you have your measurement, pick your size and browse the styles. Shipping is a flat $3.99 worldwide, free when you order 2 pairs, and you have 30 days to exchange or return.