Parsnip
Parent to parent

A new way to measure for kids' shoes.

Kids' shoe sizes are a mess. We make them make sense.

Measure your child's foot with just your phone. Parsnip™ turns that measurement into the right size in 15+ brands and major retailers.

  • No paper
  • No card
  • No ruler
13C, then 1Y

The kids' ladder restarts mid-scale, so two sizes right next to each other can look like they have nothing to do with one another.

Every brand runs its own way

The same foot can land a half size apart — or more — depending on whose box it came in. One brand runs small, the next runs long.

Feet that won't hold still

Little feet grow in bursts. The measurement you took a few months ago is already out of date, and so is the size you memorized.

Launching soon

Know their size
before you buy.

Parsnip helps parents measure their child's foot with their phone's AR sensors. Point your phone at your child's foot. Follow the simple prompts to capture a measurement. Parsnip translates that measurement into sizes across the top 15 kids' brands and large retailers.

15
brands mapped
4C–7Y
kids size range
3
ways to measure
100%
camera frames processed on-device
9:41
Parsnip result screen: 14.6 cm measured, both feet compared, and a choice of wiggle room with Growing recommended
Three ways to measure

Different choices for different families

Two AR modes run right on the phone, on ARKit on iPhone (ARCore on Android coming soon). Already know their measurement? The third mode skips the camera entirely.

01
Live Tap

An AR ruler in the live camera. Tap the heel, tap the toe, get the distance. Adjust if needed. It's built on the same AR technology already on your phone — so it should feel familiar and work the same way.

Live AR
02
Picture Tap

Freeze one frame, then tap heel and toe on the still. Vision snaps the pins to the foot's edge, adjust the pins as needed, then see exactly what was measured.

AR photo
03
Manual Entry

Already know the measurement? Type it in and go straight to brand sizes.

No camera
After the measurement

The number is the easy part.

Getting a length is where most measuring stops. Turning it into a size you'd actually buy takes a few more decisions — Parsnip makes them with you instead of quietly making them for you.

Both feet, every time

Almost nobody's feet match, and a shoe has to fit the bigger one. Parsnip prompts you to measure both (or measure one foot twice if needed) and sizes from the longer — so the smaller foot never decides what you buy.

Wiggle room, your call

Kids’ shoes need about a thumb’s width of space between the longest toe and the front of the shoe — for healthy balance, and to accommodate fast growth.

Up to five kid profiles

Save the measurements and keep the history. Three months later, re-measure and see exactly how much they've grown.

Every result comes with US kids, EU, and UK sizes.
9:41
History screen: a saved scan showing both feet, the wiggle room added, and US kids, UK and EU sizes
HistoryEvery scan saved, sizes included.
9:41
Profiles screen: one profile per child, each holding its saved measurements
ProfilesOne per child, up to five, kept on your phone.
Brand sizing

One foot.
Fifteen answers...and counting.

Every brand's kids' chart lands somewhere different — the same foot can be an 8C in one brand and a 9 in another. Parsnip generates a size ladder by brand, with a plain-language note on how that brand runs, specific to the measurement you just captured.

Help keep the app free! When you buy through our links, we may earn an affiliate commission, at no extra cost to you. Thank you for your support!

Nike Adidas New Balance Converse Vans Skechers Puma Crocs Under Armour Reebok ASICS Saucony Stride Rite Keen Native
Shop it at
Amazon Target Walmart Kohl's DSW Famous Footwear

Stores carry many brands, and each one fits differently — Parsnip shows you the size to look for, then links you straight to their kids' shoes.

9:41
Top of Brand Sizes: a 15.4 cm sizing length with UK 8 and EU 25.5
9:41
Brand Sizes list: Nike 8.5C, Adidas 9C, New Balance 9C, Converse 8C and Vans 9.5C, each with a note on how the brand runs
Privacy

Your child's image and name never leave your phone.

Parsnip never takes a photo. Picture Tap freezes a single camera frame so you can tap heel and toe, then lets it go when you're done. It is never saved, uploaded, or seen by anyone but you. What does leave the app is the measurement, your device and app version, the sign-in code from Apple or Google, which carries no name, a crash report if the app ever crashes, and any feedback you choose to send — nothing that identifies your child, and no name or email.

Read the full privacy policy
Your phone
The frozen camera frame discarded
Kid profiles & names stays
Measurement history stays
Your name & email from Apple or Google stays
The measurement itself sent →
How, and how well, you measured sent →
Device & app version sent →
Your sign-in code sent →
Our server
19.6 cm
Picture Tap · attempt 2
Angle 62° · height 69 cm
Left/right gap · 0.3 cm
iPhone 15 · iOS 18
App version 1.0.12
Sign-in code · 001…4f2
Plus a crash report if the app ever crashes, and any feedback you type and send. That is the whole list. No name, no email, no image — nothing that identifies your child.

Readings carry no name, used to check accuracy across different phones and catch problems between app versions. Records we receive are deleted automatically after 90 days. Names, profiles and saved history stay on the device.

Coming soon

Fewer returns are on the way.

Parsnip launches soon on the App Store, with Google Play following shortly after.

Questions before launch?
support@parsnipusa.com