Shaku, for you

Know your size before you order it

Two photos and your height, measured once. Shaku checks them against the size chart for the exact item you're looking at, then gives you a recommended size, and a second one if it's close.

Guidance, not a guarantee.

Start measuring See it in action

Available now on iPhone and Android.

A woman checking her phone at home, the anchor for every capability shown around it

Find my size

Two photos, checked against that item's own chart.

Try it on

See it on you before it's in your cart.

Search by image

Snap it. We find it, or the closest match.

Search by text

Describe it. We search every retailer at once.

Check quality

A close look at a secondhand piece's condition first.

Fit forecast

For kids and pregnancy — what still fits, what won’t.

Season ahead

Shop for who they'll be next season, not just today.

Find my size

Two photos, checked against that item's own chart.

Try it on

See it on you before it's in your cart.

Search by image

Snap it. We find it, or the closest match.

Search by text

Describe it. We search every retailer at once.

Check quality

A close look at a secondhand piece's condition first.

Fit forecast

For kids and pregnancy — what still fits, what won’t.

Season ahead

Shop for who they'll be next season, not just today.

What Shaku does

Built around one question: will it fit

Front pose, side pose, and height entry -- the three guided steps of a Shaku scan

Two photos and your height

Guided photos, done once. Your face is blurred on your phone, before anything is sent.

A folded sweater with a tailor’s measuring tape laid across it

Your size, for that exact item

Checked against that product's own size chart, not a generic one. A recommended size, and a close second if there is one.

Text search: a hand holding a phone with a search bar, in front of a clothing rack

Image search: a phone camera viewfinder framing a hanging sweater

Search by text or by image

Type what you want, or show a photo of something you like. Either way, we search every retailer at once.

See it on you, or check it over

A visual preview of a garment on you. Or a quick look at a secondhand piece's visible condition, before you buy.

Shop by size

Two photos in, a size you can trust out

Front

Stand straight, arms relaxed. Shaku guides you into frame.

Side

Turn once. Two angles are enough to measure accurately.

Output

Shaku's size recommendation screen, showing a recommended size and an alternative

Checked against that item's own chart. A recommended size, and a close second.

Try it on

See it on you before it's in your cart

Before

You, as you are. No scan needed for this part.

The garment

A knit sweater on a wooden hanger, photographed the way a retailer would shoot it

The item you're looking at, as the retailer shows it.

After

A generated preview of the same sweater worn by the person, styled and posed naturally

A visual preview of it on you. Not proof of fit — a preview.

Fit Forecast

Buy today's size, or the one they'll need next

For a saved child profile and a garment's own measurements, Shaku estimates how long it will fit, in months or weeks, not just whether it fits right now.

Today

Your child's current measurements

In 2 months

Still fits, room to grow

In 4 months

Time to size up

Clothing planning only, not medical or growth advice.

Built for changing bodies

Kids and pregnancy, kept separate on purpose

Two folded knit sweaters in ascending sizes with small shoes, representing a growing child

Child profiles

Save a profile for each kid. Shaku tracks their measurements over time, so every size check starts from where they are now.

A pregnant woman in a soft knit sweater, standing by a window

Pregnancy profiles

A separate profile that expects your measurements to change on their own timeline, not a child-growth one.

Clothing planning only, not medical or growth advice.

Season Fit

Shop for the season ahead, not just today

For a saved child profile, Shaku projects measurements forward and flags when it's worth sizing up, before that season's shopping starts. No garment needed for this one.

A child's sage cardigan with eucalyptus sprigs and small canvas sneakers

Spring

A child's linen shirt with a straw hat and small sandals

Size up now

Summer

A child's cable-knit sweater with a scarf, autumn leaves, and small boots

Fall

A child's wool coat with a knit hat and mittens

Winter

Why trust it

We don't sell you the clothes

So a recommended size from us has nothing to gain by being wrong.

Private

Your face is blurred on your phone, before anything is sent.

Estimated

Measurements are estimates. A recommended size, not a guarantee.

Visual only

A preview of a garment on you is not proof of fit.

Questions

Frequently Asked
Questions

Yes. This page is about the Shaku app, for people shopping for themselves. Shaku also builds a measurement and sizing service that retailers embed on their own sites — see the Services page for that.

There's a free trial, then a monthly subscription. The exact price is shown in the app or the App Store, since it can vary by where you're buying from.

Yes, Shaku is on Google Play. You can also use it from any browser at app.shaku.tech.

Your face is blurred on your phone, before anything is sent. Photos are used to estimate your measurements and are not shown to anyone else.

We don't publish an accuracy number. What Shaku gives you is guidance: a recommended size based on your own measurements and that item's own chart, not a guarantee it will fit.