Apparel return rates in ecommerce run between 20% and 30%. For some categories like dresses and footwear, they push past 40%. The single biggest reason? Sizing. Nearly half of all online returns come down to "it didn't fit."
Every return costs you shipping both ways, repackaging labor, and a customer who might not come back. A size chart app won't eliminate returns entirely, but it removes the most common reason customers send products back. If you're selling anything where fit matters — clothing, shoes, jewelry, pet accessories — this is one of the highest-ROI apps you can install. (For a broader look at handling returns operationally, see our guide on the best Shopify returns and exchange apps.)
Here are the best Shopify size chart apps in 2026, based on real App Store ratings, features, and what merchants actually say about them.
What Makes a Good Shopify Size Chart App?
A good size chart app does five things: auto-converts units by location, assigns different charts per product, renders cleanly on mobile, optionally recommends a size via AI, and loads fast without slowing your store. Here's what each of those means in practice:
- Auto unit conversion — customers in the US think in inches, customers in Europe think in centimeters. The app should switch automatically based on location.
- Product-level assignment — you need different charts for t-shirts, pants, and shoes. Assigning charts by collection, product type, or tags saves hours.
- Mobile responsiveness — over 70% of Shopify traffic is mobile. If your size chart doesn't render well on a phone, it doesn't exist.
- Fit recommendations — the step above a static table. AI-based recommenders ask a few questions and suggest the right size, which reduces uncertainty more than a chart alone.
- Lightweight code — some apps add 50-100KB of JavaScript to every product page. That slows your store. Look for apps that load under 10KB.
Kiwi Size Chart & Recommender
Rating: 4.8/5 stars | Pricing: Free plan available, paid from $6.99/month
Kiwi is the most full-featured option on this list. It combines static size charts with an AI-powered fit recommender that asks customers a few body measurement questions and suggests the best size. The recommender works for apparel, shoes, and even non-standard products like pet collars and snowboard gear.
The free plan covers basic size charts. Paid plans unlock the AI recommender, unlimited published charts, and advanced layouts. Annual plans get up to 30% off. One thing to note: if you only need simple charts without the AI recommender, Kiwi might be more app than you need — and the pricing reflects that.
Best for: Stores with complex sizing across multiple product types, or anyone who wants AI fit recommendations to reduce returns aggressively.
Jotly Size Chart & Size Guide
Rating: 5.0/5 stars | Pricing: Free plan available
Jotly's main selling point is speed. The entire app loads at roughly 5KB — about 7-8x smaller than most competitors. If store speed is a priority (and it should be), Jotly adds almost zero load time to your product pages.
Despite the small footprint, you get a drag-and-drop builder, auto unit conversion between cm and inches, multi-language support, and the ability to assign charts to specific products, collections, or vendors. Templates come prebuilt so you're not starting from scratch.
The 5-star rating across the board isn't an accident. Merchants consistently mention fast support and easy setup. If you want a lightweight, no-fuss size chart that does the job without bloating your store, Jotly is hard to beat.
Best for: Stores that prioritize page speed, or merchants who want a simple, clean size chart without AI features.
CSC: Size Chart & Size Guide (Clean Canvas)
Rating: 4.9/5 stars | Pricing: Free plan available, paid plans for advanced features
CSC comes from Clean Canvas, a developer with over 10 years on the Shopify platform. The app includes 18 preset chart styles you can use as-is or customize to match your brand. You can also build charts from scratch.
The standout feature is AI-powered size generation — CSC can pull your product data and create size recommendations automatically. It also includes Google Analytics integration to track how often customers click your size charts, which helps you measure whether the charts are actually reducing returns.
You can assign charts to specific collections, vendors, or individual products, and customize where the size chart button appears on your product pages.
Best for: Brands that want data on how customers interact with size charts, or stores with large catalogs that need AI-generated charts at scale.
ESC Size Charts & Size Guide
Rating: 4.7/5 stars | Pricing: Free plan, premium at $4.99/month
ESC keeps things straightforward. The free plan lets you create a limited number of size charts using pre-made templates. The premium plan at $4.99/month unlocks unlimited charts, removes watermarks, and adds image/text customization options.
You can add charts to individual product pages or display them store-wide using product tags or app blocks. ESC also supports the Shop App, so your size charts show up for customers browsing through Shopify's mobile shopping app.
At $4.99/month for unlimited charts, ESC is one of the most affordable paid options. It doesn't have AI fit recommendations, but if you just need clean, customizable size tables, the price-to-value ratio is strong.
Best for: Budget-conscious stores that need basic but solid size charts without paying for AI features they won't use.
MP Size Chart & Size Guide (Avada)
Rating: 4.8/5 stars | Pricing: Free plan available
MP Size Chart is built by Avada, known for their SEO and marketing apps. It includes auto unit conversion, size chart reminders on product pages, and a smart fit recommendation feature on paid plans.
The interface is clean, and setup is fast — you can have your first chart live in under 10 minutes using their templates. Charts are fully customizable with your brand colors, fonts, and layout preferences.
If you already use other Avada apps (like their SEO suite), the consistent design language and settings interface is a nice bonus. The app works well as a standalone tool too.
Best for: Merchants already in the Avada ecosystem, or anyone who wants a polished size chart with fit recommendations at a reasonable price.
BF Size Charts & Size Guides
Rating: 4.7/5 stars | Pricing: Free plan available
BF focuses on versatility. It's designed to handle size charts for apparel, shoes, jewelry, and accessories — all from one app. You build charts using a combination of text, images, and custom tables.
The customization options are solid. You can add text boxes with care instructions or fit tips alongside your measurement tables, which gives customers more context than raw numbers alone. For stores selling across multiple product categories, BF handles the variety without needing separate apps for each.
Best for: Multi-category stores selling clothing, shoes, and accessories that need one app to cover all their sizing needs.
Smart Size Chart & Size Guide
Rating: 4.8/5 stars | Pricing: Free plan available
Smart Size Chart delivers exactly what the name suggests — simple, customizable size charts that are fully responsive on mobile. The setup process is fast, with templates for common product categories and a visual editor for custom charts.
It doesn't try to be an AI fit recommender or an analytics platform. It creates clean size charts, lets you assign them to products or collections, and stays out of the way. Sometimes that's all you need.
Best for: Merchants who want a straightforward size chart app without complexity or a learning curve.
AI Fit Finder Size Recommender
Rating: 4.6/5 stars | Pricing: Free plan available
This app goes all-in on the AI approach. Instead of displaying a static chart and hoping customers measure themselves correctly, AI Fit Finder asks customers a few quick questions — height, weight, body shape preference — and recommends the exact size.
The AI approach works best for stores with consistent, standardized sizing across their catalog. If your sizes vary wildly between products (common with multi-brand stores), the AI recommendations may be less accurate. For single-brand stores with predictable sizing, it can meaningfully reduce "wrong size" returns.
Best for: Single-brand apparel stores with standardized sizing who want to replace static charts with interactive recommendations.
Which Size Chart App Is Best for Your Shopify Store?
Skip the feature comparison spreadsheet. Answer three questions instead:
- Do you need AI fit recommendations, or just a clean chart? If you're a single-brand apparel store with high return rates, AI recommendations (Kiwi, CSC, AI Fit Finder) are worth the investment. If you sell hard goods or have simple sizing, a static chart (Jotly, ESC, Smart Size Chart) is enough.
- How much does page speed matter to you? If you're already battling a slow store, Jotly's 5KB footprint is a real advantage. Most other apps are heavier.
- What's your budget? ESC at $4.99/month for unlimited charts is the best value for basic needs. Kiwi's AI features justify the higher price if you'll actually use them.
Install one. Set up charts for your top 10 best-selling products first. Monitor your return rate for those products over 30 days. If it drops, roll out charts to the rest of your catalog. U.S. retail returns hit $849.9 billion in 2025 — even a small percentage decrease in your store's return rate translates directly to recovered profit. Once your size charts are live, pair them with a strong above-the-fold product page layout to maximize the conversion impact.