How to Add a Size Chart to Shopify (3 Ways)

A Shopify size chart has one job: to let a shopper check real measurements before they buy, so fewer orders come back the wrong size. That matters most for clothing, where size and fit is behind 53% of apparel returns (Coresight Research, 2023), and a clear chart on the product page is one of the cheapest ways to cut that number. There are three ways to add a size chart to Shopify, and they trade off cost, setup time, and whether the shopper gets an actual size recommendation instead of a table to read. Here is each one, what it takes, and what it costs.

Before you start: get real measurements#

Every one of these methods is only as good as the numbers inside it. A size chart built from guessed measurements just hands the guesswork back to the buyer. So measure the actual garment first. Lay each item flat, smooth out the wrinkles, and measure edge to edge with a tape: chest or bust across the widest point, waist, length from the high shoulder down, sleeve, and inseam. Write every value in both inches and centimeters, and do it for each size you sell, not just a sample. If you want the exact points to measure for a specific garment, the Sizely measurement guides walk through each one.

Way 1: your theme's built-in options#

Shopify does not ship one universal size chart button, but your theme almost always gives you a place to put a chart. This path is free and lives entirely inside the admin you already use.

Steps as of July 2026, kept generic on purpose because Shopify changes the admin often:

• From your Shopify admin, open Online Store, then Themes, then Customize.
• Open your product template and add a section or block. Many themes include a rich text, collapsible row, or tab block that suits a chart well.
• Paste your measurements as a simple table, or upload a size chart image, then save.

That gives every product the same chart. For a chart that changes per product, use a metafield. Define a product metafield for the size chart, fill it in on each product, and reference that field in your theme so each item shows its own numbers. Some themes include a size chart setting out of the box, so the exact wording varies by theme.

The honest tradeoffs: it is manual, so you build and maintain it yourself. It is tied to your current theme, which means switching themes can mean rebuilding it. And a static table gives the shopper numbers to interpret, not a size recommendation.

Way 2: a size chart app from the App Store#

The fastest way to get a polished Shopify size guide, popup or tab included, is a dedicated app from the Shopify App Store. You install it, set the look, and it handles the placement on your product pages for you. For a store that wants something live today without touching theme code, this is the path of least resistance.

The tradeoff is cost and weight. Apps charge a recurring monthly fee, and the size recommendation features, the part that tells a shopper their size rather than showing them a table, usually sit on the paid tiers rather than the free one. Kiwi Sizing, a common pick, puts its recommender on its Plus plan at $12.49 a month (checked July 2026). Some apps also raise the price as your order volume climbs, so the bill you sign up at is not always the bill you pay once the store grows.

There is a performance cost too. Every app you add loads its own code on your storefront, and stacking several of them is a common reason a product page gets slower. One well-built size chart app is usually fine. Five overlapping ones are not.

Way 3: a Sizely chart#

Sizely is built for this one job, and it gives you two ways in depending on whether you want something free and static or interactive.

The free way is a size chart image. Open the Size Chart maker, type your measurements, and it builds a clean, on-brand chart as you go. Download it as an image and drop it into your product description, or add it to the product's media gallery like any photo. This costs nothing, works on Shopify and on any marketplace listing (eBay, Etsy, Poshmark, Depop), and takes about a minute. It is the quickest honest chart you can put in front of a buyer.

The interactive way is an embed. Instead of a flat image you get an on-brand widget the shopper can read as a visual chart, a table, or a find-my-size flow, added with one script tag you paste once. On the same install you can turn on Fit Finder, the Sizely size recommender: for shoes the shopper names a pair they already own, for apparel they answer a few quick questions, and either way it answers with their size in what you sell, sized against your own charts. Configuring and previewing all of it is free on any plan. Going live on your store is included with the Store plan at $39 a month, and with Brand above it. You can see how the recommender behaves on the Fit Finder page.

Quick comparison#

If you just need a trustworthy chart on the page today and want to spend nothing, make a free size chart image. If you want the shopper to get an actual size back instead of reading a table, that is what Fit Finder does, and it is the piece that moves returns the most. Either way, a measurement-based chart is one of several tactics that reduce clothing returns, and it stacks well with the rest.

Frequently asked questions#

How do I add a size chart to Shopify for free?#

Two ways cost nothing. Inside Shopify, add a section or block to your product template and paste a table, or set up a product metafield for a per-product chart. Outside Shopify, build a chart in the free Size Chart maker, download it as an image, and add it to your product description or media gallery. The image path is usually faster and looks cleaner.

Does Shopify have a built-in size chart?#

Not a universal one. Shopify itself does not add a size chart button to every store, so what you get depends on your theme. Many themes include a section, block, or setting you can use for a chart, and product metafields let you show a different chart on each product. If your theme has nothing suitable, an app or a pasted chart image fills the gap.

Do size chart apps slow down my store?#

They can. Each app loads its own code on your storefront, so stacking several is a common cause of a slower product page. One well-built app on its own is usually fine. A lighter option is a single pasted chart image or one script tag, which adds far less weight than a full app.

Can shoppers get a size recommendation instead of reading a chart?#

Yes. A static chart shows numbers and leaves the shopper to interpret them, while a recommender returns an actual size. Sizely Fit Finder does this: the shopper names a pair of shoes they already own, or answers a few quick questions for apparel, and it comes back with their size in what you sell, sized against your own charts. It goes live on the Store plan at $39 a month.

Related reading#

• Make a size chart free
• Sizely Fit Finder for your store
• How to measure a garment
• How to reduce clothing returns