What is a good size chart click rate?

Size charts sit on thousands of Shopify product pages, yet almost nobody publishes how often shoppers open them. So we measured it.

This is original Vitals data from 903 Shopify stores using our Size Chart app, part of the Vitals subscription, which is installed on 33,647 Shopify stores. In the last 90 days those stores recorded 35 million size chart impressions and 1.3 million opens. 546 of them had 1,000 or more impressions, which is the group the headline numbers describe.

Below you'll find how often shoppers open a size chart on a typical store, what the top 10% of Shopify stores get, how often the chart is shown, and how the numbers change with traffic, store size, order value and Shopify plan.

KEY STATISTICS

What is a size chart on Shopify?

A size chart is a table of measurements that tells a shopper which size to buy. On most stores it opens as a popup or a tab when the shopper clicks a "Size guide" button or link next to the size picker on the product page.

It matters because a shopper who can't tell which size fits either guesses, or leaves. Reviews can help with fit, but a chart gives the exact numbers. If you're still choosing an app, see our comparison of the best Shopify size chart apps.

How we measured it

We counted every Shopify store running Vitals Size Chart that had at least one size chart impression in the last 90 days (6 July to 3 October 2026). That is 903 stores. We then split them by traffic. 546 stores had 1,000 or more impressions, enough that a rate means something, because below that a few opens swing the result. The headline numbers, the main table and the store size, order value, plan and theme tables use those 546. All 903 stores are shown in the traffic volume table and in the "All stores" row.

We worked out each metric per store, then ranked the stores. The median is the store in the middle. "Top 25%" and "top 10%" are the values a store needs to reach to be in that group, and "bottom 25%" is the value a quarter of stores fall below.

The terms used throughout:

• An impression is one time the size chart button is shown on a product page.
• Open rate (or click rate) is clicks on the size chart button, which open the chart in a pop-up, divided by impressions.
• Size chart shown per page view is impressions divided by the store's page views. The button only appears on product pages, so it is a share of all page views on the store, not of product page views.

What's a good size chart click rate?

Stores with 1,000+ impressions (546 stores):

All stores (903 stores), median: open rate 2.9%, size chart shown per page view 15.0%.

An open rate of 3.2% is normal. Anything above 6.0% puts a store in the top quarter, and 9.6% puts it in the top tenth. Below 1.3%, a store is in the bottom quarter. The chart may be hard to find, or shown on products where shoppers don't need it.

The spread is wide. The top 10% of stores get three times the open rate of the median store. A size chart is only useful to the shopper who has a sizing question, so how many open it depends a lot on what you sell and where the button sits.

The second row shows how often the chart appears. At the median store it is shown on 23.2% of page views. At the bottom 25% it is shown on 12.2% or fewer, and at the top 10% on more than half.

Does traffic volume change the numbers?

All 903 stores, by size chart impressions in the last 90 days:

Yes. Rates for the smallest stores are noisy: with 99 impressions or fewer, a handful of opens moves the rate a lot. In the 1–99 band the bottom 25% of stores have a 0.0% open rate while the top 10% have 43.8%.

That is why the overall median across all stores (2.9%) is below the 3.2% for stores with 1,000+ impressions. The bigger difference is in how often the chart is shown: from 1.4% of page views in the lowest band to 26.5% in the highest.

So compare yourself with your own volume band, not the overall median.

Do bigger stores get more opens?

Stores with 1,000+ impressions:

Up to a point. Stores doing 100 or more orders a month get more than double the open rate of stores doing fewer than 10, at 3.8% and 3.7% against 1.5%.

The chart is shown on a smaller share of page views as stores get bigger, from 28.0% for the smallest stores to 15.5% for stores with 1,000 or more orders. A likely reason is that larger stores sell more than apparel and footwear, so the chart only appears on the products that need one. That is our reading, not something the data shows.

Does order value change size chart performance?

Stores with 1,000+ impressions:

Stores with an average order under $100 have an open rate between 3.5% and 3.8%. At $100 to $199 it drops to 2.5%, and at $200 or more to 2.2%.

The under-$30 band has only 31 stores, so read it as a rough guide. Higher-priced stores seeing fewer opens matches what we found in our sticky add to cart statistics.

How do Shopify plans compare?

Stores with 1,000+ impressions:

Open rates are close across plans, between 3.0% and 3.4%. The difference is in how often the chart is shown. Advanced stores show it on 9.2% of page views at the median, against 26.0% on Basic and 22.2% on Shopify.

Does your theme matter?

Stores with 1,000+ impressions:

Barely. Stores on Dawn and stores on every other theme have almost the same median open rate. Not sure which theme you're on? Our Shopify theme detector will tell you.

Does a size chart work better on mobile?

We can't answer this one from our data. Vitals records size chart impressions and opens per store, not per device, so we don't have a mobile and desktop split to publish.

How to calculate your own size chart rates

You need size chart impressions, size chart opens and page views, all for the same date range.

Open rate                      = size chart opens ÷ size chart impressions
Size chart shown per page view = size chart impressions ÷ page views

Two things to watch. Divide opens by impressions, not page views; the chart isn't shown on every page, so page views will make your open rate look lower than it is. And use a period with at least 1,000 impressions if you can, or a handful of opens will swing the result.

If you use Vitals, impressions and opens for the size chart are in the Size Chart analytics in your Vitals dashboard.

What improvement should you aim for?

Use the table for your traffic volume and store size rather than the overall median. A store doing 5 orders a month shouldn't compare itself with a store doing 500.

If you're in the bottom 25% (under a 1.3% open rate), start by checking the chart is showing and easy to find, using the steps below. If you're below the median for your group, the median is a fair target. If you're at the median, the top 25% is the next step: a 6.0% open rate. The top 10% (9.6%) is a ceiling rather than a goal.

How to get more opens on your size chart

A shopper only opens the chart if they can see the button and expect it to answer their question.

1. Put the size chart button next to the size picker. That is where the sizing question comes up. In Settings, Position has presets around the product description, buy buttons, add to cart button and product end, and a Custom CSS selector to anchor the button exactly next to the size picker.
2. Name the button plainly. "Size guide" or "Size chart" works. A clever label makes shoppers guess what it does. Change it under Settings, Translations, Button text (the default is "Size Chart").
3. Show it on every product that needs one. A chart on 23.2% of page views is typical; if yours is shown much less often, check the chart's Visibility setting: All products, or the specific products and collections you picked.
4. Keep the chart readable on a phone. Measurements should fit the screen without sideways scrolling.
5. Use a different chart per product type. A shopper who sees measurements for the wrong item closes it again. Create one chart for each type and assign it to its products or collection under Visibility; a chart assigned to specific products takes priority over a collection or all-products chart.

You can set all of this up in the Vitals Size Chart App settings.

Frequently asked questions

1. What is a good size chart click rate?

The median size chart open rate is 3.2% for stores with 1,000+ impressions, and the top 25% of stores reach 6.0%. Across all 903 Shopify stores in 2026 the median is 2.9%.

2. What is the average size chart open rate on Shopify?

The median is 3.2% among stores with 1,000+ impressions. The bottom 25% of stores get 1.3% or less, the top 25% get 6.0% or more and the top 10% get 9.6% or more.

3. How often is a size chart shown?

The median store with 1,000+ impressions shows its size chart on 23.2% of page views. The top 25% of stores show it on 35.8% or more, and the top 10% on 51.2% or more.

4. Do small stores get fewer size chart opens?

Yes. Among stores with 1,000+ impressions, those with fewer than 10 orders a month have a median open rate of 1.5%, against 3.8% for stores doing 100 to 999 orders.

5. Does a higher order value mean fewer size chart opens?

At the median, yes. Stores with 1,000+ impressions and an average order value under $100 have an open rate of 3.5% to 3.8%, against 2.2% for stores at $200 or more.

Methodology and sources

Data: Vitals Size Chart analytics for 903 Shopify stores with at least one size chart impression between 6 July and 3 October 2026 (the last 90 days). All 903 are counted. 546 of them had 1,000 or more impressions; the headline figures and the store size, order value, plan and theme tables describe those 546, because below that a few opens swing a rate. The traffic volume table and the "All stores" figures cover all 903. Vitals keeps this analytics data for 90 days, so this edition covers one quarter; later editions will add more. Every figure is the 25th percentile, median, 75th percentile or 90th percentile of per-store values. We only show a group of stores, such as a Shopify plan or an order-value band, when it has at least 30 stores. With fewer than that, one or two unusual stores can move the median too much to trust. No shopper-level or store-identifying data is published. For how Vitals itself affects store speed, see our Shopify speed benchmark.

If you'd like to cite these numbers, please link to this page as "Vitals Size Chart Statistics 2026".