What if my feet are two different sizes?

This is completely normal. Always buy shoes to fit your larger foot. You can use a thin insole or heel grip in the shoe for your smaller foot to improve the fit.

Should I measure with or without socks?

Measure with the socks you plan to wear. Athletic socks add 2-3mm; dress socks add almost nothing. Barefoot measurements will give you shoes that are too tight with socks.

How do I measure shoe width?

Stand on paper and mark the widest point of your foot on each side. Measure across. Standard width is about 9.5cm for women and 10.5cm for men. If you're wider, look for brands offering wide (2E) or extra-wide (4E) options.

Can I measure my foot with a phone?

Some apps claim to measure foot size via camera, but they're not reliable enough for accurate sizing. The paper-and-ruler method takes 2 minutes and is significantly more accurate.

How to Measure Your Shoe Size at Home

All you need is paper, a pen, and a ruler. Follow these 6 steps for an accurate measurement in under 5 minutes.

Gather your materials

You'll need a piece of paper larger than your foot, a pen or pencil, a ruler or measuring tape, and a hard flat surface. Don't measure on carpet.

Quick test: Make sure the paper extends past your heel and longest toe.

Stand on the paper with full weight

Wear the type of socks you'll use with the shoes. Stand with your full weight on both feet — your foot spreads under load, and sitting measurements will be too small.

Quick test: Rock forward and back to settle your natural stance.

Mark your heel and longest toe

Have someone else mark, or carefully do it yourself. Place the pen vertically at the very back of your heel, then at the tip of your longest toe (which isn't always the big toe).

Quick test: Make sure the pen is straight up and down, not angled.

Measure the distance in centimeters

Measure from the heel mark to the toe mark. Round up to the nearest half centimeter. This is your foot length — the number you'll use in size charts.

Quick test: Measure both feet. If they differ, use the larger measurement.

Measure in the afternoon

Feet swell throughout the day, expanding by 3-5mm. An afternoon measurement gives you the size your shoes actually need to be. Morning measurements can lead to shoes that feel tight by evening.

Quick test: If you measured in the morning, add 3mm to your result.

Use your measurement to find your size

Enter your foot length in our CM to Shoe Size converter to instantly find your size across Nike, Adidas, and 11 other brands. Different brands use different scales, so always check brand-specific charts.

Quick test: Compare your result with at least 2 brands you're considering.

Ready to Find Your Size?

Enter your foot length and instantly see your size across all major brands.

Convert CM to shoe size Shoe size converter

Also see: Signs your shoes don't fit · Shoe fit troubleshooter