Wrong sizes are the top reason clothes and shoes come back. SizeChartKit puts a clear size guide right next to your size picker: ready-made charts you adjust to your fit, inches or centimeters at a tap, and a fit finder that recommends a size from the shopper's own measurements.
Free for up to 3 size charts · Micro $3.99/mo · Pro $9.99/mo
| Size | US | Bust (cm) | Waist (cm) | Hips (cm) |
|---|---|---|---|---|
| XS | 0–2 | 81.5–84 | 61–63.5 | 86.5–89 |
| S | 4–6 | 86.5–89 | 66–68.5 | 91.5–94 |
| M | 8–10 | 91.5–94 | 71–73.5 | 96.5–99 |
| L | 12–14 | 98–101.5 | 77.5–81.5 | 103–106.5 |
| XL | 16–18 | 105.5–109 | 85–89 | 110.5–114.5 |
SizeChartKit lives inside your Shopify admin. Build a chart in minutes, choose which products it belongs to, and add the Size guide block to your product page in one click.
Women's and men's tops, T-shirts, pants and jeans, dresses, women's and men's shoes (US, UK, EU) and kids' sizes. Start from one and adjust every size and measurement to your own fit.
Assign charts by collection, tag, product type or vendor, pick individual products, and set a default for everything else. Shoppers always see the chart that matches the product.
Shoppers switch units with one tap, and measurements and ranges convert automatically. Choose which unit your store shows first.
Shoppers enter their measurements and get a size recommendation from your chart, with the matching row highlighted. It runs in their browser, so their measurements never leave their device. (Pro)
Tell shoppers when a style runs small or large with a badge next to the size guide (Pro), and add a "how to measure" diagram to any chart (Micro and Pro).
See which size guides shoppers open and how often the fit finder is used, and show different charts by country or language, such as US sizes in the US and EU sizes in Europe. (Pro)
Every plan includes the size guide pop-up, templates and assignment rules. Upgrade when your catalog grows.
Plans are billed through Shopify. Paid plans include a 7-day free trial on your first paid subscription. Change or cancel anytime.
Short answers, no fine print.
No. SizeChartKit adds a "Size guide" block through Shopify's theme editor. One click opens the editor with the block ready to place next to your size picker; drag it where you want it and save.
Yes. Assign a chart to a collection, tag, product type or vendor, pick individual products, or set a default. A product's own pick always wins; otherwise the first matching rule applies.
Only your own store data: your products and collections (to assign charts) and your Shopify Files (for chart images). It requests no customer scopes and stores nothing about your shoppers; the fit finder runs entirely in the shopper's browser. Details are in our Privacy Policy.
The size guide disappears from your product pages, your access tokens are deleted immediately, and your store's data is removed in response to Shopify's shop-redaction request.
As soon as SizeChartKit is live: pick a template, assign it, and add the size guide to your product pages. Free for up to 3 charts, with no time limit.
⏳ Coming soon to the Shopify App Store