for growing families
Know what fits, and what's next.
Every kid's clothing, shoe, and diaper sizes in one place, kept current as they grow.
Free · No account needed · iPhone, iPad, or any browser
Sample family. Real math.
for the gift-givers
Grandma stops guessing.
Send a size list by text or email, straight from DoorFrame. She doesn't need the app, and she'll see what's likely next, too.
this is the part Grandma gets
Leo's sizes (4 years 4 months old) Tops: 5T (estimated, maybe 4T) Pants/Shorts: 5T (estimated) Shoes: 11C (estimated, maybe 11.5C); next size likely 12C by Mar 2027 Socks: Junior (estimated); next size likely Youth by Mar 2027 Height: 3 ft 4.9 in (Apr 10, 2026) Foot length: 6.6 in (Aug 24, 2026) As of Sep 28, 2026. Estimated sizes are a best guess, and brands fit differently. Shared from DoorFrame
Perfect. Getting the dinosaur sneakers in 12C for his birthday.
the whole routine
Kids grow. Pants don't.
A minute now and then is all it takes.
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Add your kids
A name and a birthday. DoorFrame starts with typical sizes for their age right away.
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Log what you know
A height, a weight, a foot length, or just a size that fits. Every entry makes the estimates their own.
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See what fits, now and next
Tops, pants, shoes, socks, diapers, and more: the likely size today and when to size up.
Only 49% sure. It says so.
honest math
The chances, not just a guess
Growing kids are between sizes a lot. DoorFrame shows how sure it is, so you can buy with confidence or buy a little big.
- The most likely size now, and what else it could be
- When the next size up is likely, so you can shop ahead
- A nudge when an estimate is getting old, with the quick log or two that brings it up to date
- Plain size guides: 4T vs. 4, toddler vs. youth shoe sizes, socks by shoe size
everyone's invited
For the whole village
One list for the whole family
With an optional account, parents and caregivers share the same kids and sizes, synced across phones and the web.
Private by default
No ads and no trackers. Everything stays on your device unless you choose to sign in. Privacy
Grown-ups too
Keep teens' and adults' sizes as well: men's and women's sizes, dress shirts, even climbing shoes.
your turn
Come on in.
Get DoorFrame for iPhone and iPad, where it also works offline, or use it in your browser with nothing to install. Either way it's free, with no account needed.
Estimates are a helpful guide: brands fit differently. How estimates work