Try SmartSize freeA guide shoppers can scan
Measurements, fit notes, tabs, and helper content stay readable on mobile instead of living in a static description image.
- Multi-tab guides
- How-to-measure blocks
- Fit notes and callouts
- Dedicated mobile layout
Included in every plan · 5,000+ stores · Built for Shopify
Beautiful size charts, built from any file.
Upload an image or spreadsheet. SmartSize turns it into an editable, mobile-friendly guide next to the size selector — no code.
AI chart import
From screenshot to structured size guide.
- 1Upload sourceImage, screenshot, or spreadsheet
- 2Editable guide readyAI extracts rows and units
The shopper’s view
The size guide your shoppers actually read.
SmartSize puts a clear Size Chart button next to the size selector and opens a modern, mobile-first guide with measurements, tabs, unit conversion, and international sizes.
Size
SML
Size GuideHow to MeasureInternational
| M | Bust 90 | Waist 72 |
|---|---|---|
| L | Bust 96 | Waist 78 |
cm ↔ in · US / EU / UK / JP
From image to editable chart in minutes.
Upload what you have
An image, screenshot, photo, or spreadsheet.
AI extracts the structure
Rows, columns, labels, units, and headings become an editable table.
Publish by product rules
Assign charts by product, collection, type, vendor, or tag.
More than a static table.
A professional size guide system: readable for shoppers, controllable for merchants, ready for global catalogs.
A builder merchants can control
Drop in content blocks, reorder them, and tune the chart until it feels native to the store theme.
- Drag-and-drop blocks
- Live preview
- Saved brand presets
- Images and illustrations
Localization without rebuilding
One chart can serve international storefronts with editable AI translations and automatic unit conversion.
- AI translations
- cm ↔ in conversion
- kg ↔ lbs conversion
- US / EU / UK / JP mappings
One chart system for every size-dependent product.
Templates and structure for apparel, footwear, pets, formalwear, gear, and international storefronts.
Apparel
Men’s, women’s, kids’ and baby sizing — tops, dresses, denim, and outerwear.
Lingerie & swimwear
Specific measurements and guidance for categories where fit confidence matters most.
Footwear
Length and width charts with international shoe-size conversions built in.
Pet products
Collars, harnesses, and apparel for dogs and cats — neck, chest, and back.
Tailored & formalwear
Suits, blazers, and dresses where precise measurements really matter.
Furniture & gear
Any product with dimensions — give buyers a clear, scannable spec table.
Trusted by stores that care how sizing feels.
5,000+Shopify stores
5.0★across 127+ reviews
<30sto a confident size
“Smart Size Charts offers so much functionality to standardise, create individual charts for one or more products and to manage the info to sort your brand.”
Size chart FAQs
What is a Shopify size chart app?
A Shopify size chart app adds a clear, mobile-friendly size guide to your product pages so shoppers can check measurements before they buy. SmartSize places a Size Chart button next to the size selector and opens a modern popup with measurements, how-to-measure tabs, unit conversion and international size mappings — no static description image required.
Do I need to edit my theme code to add a size chart?
No. SmartSize installs through Shopify theme app extensions, so you add and position size charts from the theme editor with no code and no developer. It earned Shopify's Built for Shopify badge for meeting the highest bar on storefront and admin quality.
Can I turn an existing size chart image into a SmartSize chart?
Yes. Upload an image, a screenshot or a spreadsheet and SmartSize's AI extracts the rows and columns into a structured, editable table. You then refine it visually — add tabs, callouts, illustrations and fit notes — without rebuilding the chart from scratch.
What products can SmartSize size charts be used for?
Any size-dependent product: apparel for men, women and kids, lingerie and swimwear, footwear, pet products, tailored and formalwear, and furniture or gear. Pre-made templates give each category real starting content.
Does SmartSize support multiple languages and units?
Yes. Charts translate into every published storefront language (AI-generated by default, fully editable), automatically convert between centimeters and inches and between kilograms and pounds, and show equivalent international sizes across regions such as US, EU, UK and JP.
Is there a free plan for size charts?
Yes. SmartSize has a free plan with pre-made templates, unit conversion, international sizing and a mobile-optimized layout with no watermark. Paid plans add advanced design, multi-tab charts, AI translations and unlimited charts.
Launch your first size chart free.
Start with two charts at no cost. Upgrade when you need more charts, advanced design, or the AI Fit Quiz.