Right size.
First time.
Add a size chart to any Shopify product in 60 seconds — no code, no theme conflict, no setup fee.
Built for High-Scale Commerce
No messy HTML pasting, no performance lag, and no visual layout shifts. Just native Shopify components styled perfectly to blend into your current design theme.
Drag & Drop Builder
Design visually - no code, no spreadsheets. Customize rules, headings, rows and columns instantly.
15+ Ready Templates
Tops, Bottoms, Dresses, Shoes, Kids clothing, and accessories. Tailored templates to start immediately.
Global Size Standards (US / EU / UK)
Pre-loaded global sizing guidelines for US, European, and UK markets. Convert local measurements into global sizes instantly.
Multi-tab Layout
Group Women, Men, Kids, and Youth size charts inside a single interactive dashboard widget on your store.
Variant Sync
Clever integration that automatically detects and highlights the exact size tab when shoppers click a product variant.
Theme App Extension
Designed for Shopify Online Store 2.0. No custom script injection, zero cumulative layout shift (CLS), zero theme conflict.
Live on Your Website in 4 Simple Steps
No backend complications, database setups, or heavy script inclusions. Experience the speed of native Shopify Online Store 2.0 app integration.
Install App
Find FitChart in the Shopify App Store. Connect in one click without registering any account or entering credit cards.
Pick & Adjust Template
Choose from 15+ ready templates or construct custom tables. Easily input columns, rows, headers, and converted measurements.
Assign to Products
Map your chart to specific products, collections, tags, or vendors. The smart rules engine automatically serves the correct layout.
Publish to Storefront
Drag the modular FitChart App Block directly onto your product layouts via the native Shopify theme editor. Live in seconds!
15+ Ready-To-Publish Presets
Skip the math and complex spreadsheet formulas. Pick from standard sizes mapped for your products, customize labeled columns, and publish with confidence.
Women's Tops
5 sizing definitions
Men's Shirts
5 sizing definitions
Women's Dresses
4 sizing definitions
Jeans & Pants
6 sizing definitions
Kids Clothing
5 sizing definitions
Running Shoes
7 sizing definitions
Dress Shoes
6 sizing definitions
Women's Swimwear
4 sizing definitions
Men's Jackets
5 sizing definitions
Skirts & Shorts
5 sizing definitions
Sportswear
5 sizing definitions
Lingerie
4 sizing definitions
Winter Coats
5 sizing definitions
Handbags
3 sizing definitions
Hats & Caps
3 sizing definitions
Global sizing standards for international stores
Map regional sizing systems seamlessly. Our automatic sizing templates allow cross-border merchants to convert US, EU, and UK apparel dimensions side-by-side with metric Bust and Waist coordinates.
Empower shoppers across global markets. Interactive translation widgets adjust the dimensions in real-time according to their localized expectations, dramatically minimizing returns and driving buyer confidence.
Unified Translation Core
Support imperial and metric formats side-by-side. Automatically switches between US, UK, and European standards based on country codes and buyer preferences.
Women's Fashion Tops
Blouses, Tees & Knitwear
Select Sizing Template:
| US Size | EU Size | UK Size | Bust | Waist |
|---|---|---|---|---|
| XS (2) | 32 | 4 | 78–82 cm | 60–64 cm |
| S (4-6) | 34–36 | 6–8 | 83–87 cm | 65–69 cm |
| M (8-10) | 38–40 | 10–12 | 88–92 cm | 70–74 cm |
| L (12-14) | 42–44 | 14–16 | 93–97 cm | 75–79 cm |
| XL (16) | 46 | 18 | 98–104 cm | 80–86 cm |
Sizing Should Be Free
We believe correct sizing guides are a core utility requirement for any e-commerce storefront, not an expensive premium luxury. FitChart is free to use.
"Everything included. No hidden fees."
- Unlimited size charts
- 15+ pre-built templates
- Drag & drop builder interface
- Global size standards (US / EU / UK)
- Multi-tab sizing layouts
- Variant Sync theme hooks
- Online Store 2.0 Theme App Extension
- Shopify GDPR compliant layout
- Email technical support
Frequently Asked Questions
Have questions about integrations or feature sets? Here are answers to some questions merchants often ask about FitChart.
Stop losing sales to size confusion.
Join thousands of smart Shopify merchants who added a localized, responsive size chart and cut their delivery returns overnight.
The Real Cost of Sizing Guesswork
Online apparel shoppers have one major fear: order the wrong size, get stuck with returns. Here is how adding proper sizing assistance shifts your margins completely.
Without FitChart
Shoppers guess their size and order wrong. Returns pile up. You lose money on double-way shipping, spend endless hours on support tickets, and lose the customer's long-term trust.
With FitChart
A clear, on-page size guide helps shoppers pick right the first time - fewer returns, more confident buyers, higher purchase repeat rates, and pristine margins.