01
Grab your phone and paper
Stand up straight and place one foot in the middle of an 8.5 X 11 inch piece of paper.
First in the USA, only at JSFK
Stop guessing your kid's shoe size online.
Meet SizeWise, our new AI foot scanner. Point your phone camera at those little feet and get an accurate, brand-calibrated size in seconds. No ruler, no printable chart, no tears.
Scan my childs feet
Free to use. No app download.
On desktop or in-store?
Scan with your phone to get started.
Just measured
EU 26 in Igor · EU 25.5 in Naturino
Same feet, different brand fit. That's why calibration matters.
The tiny-shoe problem
Sizing kids' shoes online has always been a bit of a gamble.
Feet grow overnight. Every brand can fit a little different. Printable charts curl at the edges, rulers slide, toddlers wiggle. Just Shoes for Kids was founded because shoe shopping for little ones was harder than it needed to be. SizeWise is the next step in that promise: a fit you can trust before you ever click add to cart.
How it works
Four small steps. One perfect size.
02
Open SizeWise, add a profile
Click the button to open SizeWise and follow the friendly instructions to create a profile for your Kiddo.
03
Measure with your camera
SizeWise measures length, width and shape, then calibrates against the exact brand and style you're shopping.
04
Shop with confidence
Get a brand-specific size, add to cart, and know it will actually fit when the box lands on your doorstep.
Why it works
Real technology, tuned for real little feet.
Generic size charts miss what makes each brand special. SizeWise doesn't.
Brand-calibrated, not generic
Igor fits different than Naturino. SizeWise knows, and adjusts down to the millimeter.
No app, no fuss
Runs right in your phone browser. Scan, size, shop, done.
Already trusted overseas
Proven with families and retailers across the UK and Europe. Now it is our turn.
Fewer returns, happier feet
A better size means less shipping back and forth and shoes that actually fit.
Calibrated for
Igor · Old Soles · Naturino · Falcotto · Tip Toey Joey · Froddo
A little bragging moment
The first US retailer with SizeWise built in.
SizeWise has been quietly helping parents across the UK and Europe find the right fit. We are proud to be the first shop in the United States to bring it home, and to keep doing what we've always done: donating 1% of net profits to the ELIJA Foundation while we're at it.
Ready to meet the last size chart you will ever need?
Grab your phone, grab your kiddo, and get an accurate size in about a minute.
Good questions
The short answers.
Why is children's shoe sizing so confusing?
Children's shoe sizes vary by brand, style, and foot shape, making a universal size impossible.
Does SizeWise cost anything to use?
No, SizeWise is completely free to use.
Why do I need a sheet of paper?
The US letter sheet of paper serves as a reference object so we can accurately measure the foot.
Is my child's data private and secure?
Yes, your measurements are used only to provide a size recommendation and are handled securely.
Is the shoe size different if my child wears socks?
Generally, no — your child's shoe size does not change just because they're wearing socks. However, the thickness of the socks can affect how the shoes fit, so be sure to measure without socks to ensure the most precise recommendation with SizeWise.
Do I need to download an app?
No. It opens directly in your phone's web browser.
How often should I measure my child's feet?
Try to measure every two months or before buying new shoes, as young children's feet grow quickly.