Best Fit ‑ Size Charts

Best Fit ‑ Size Charts

by Relentless Apps

Easily create unlimited size charts & size guides

5.0 of 5 stars(32 reviews)

Unlimited Size Charts

Create unlimited size charts & size guides. Choose which products or collections you want your size charts to appear in.

Beautiful Size Charts

Create beautiful easy to use size charts & size guides for clothes sizing, apparel sizing, shoe sizing, or product dimensions.

Custom Size Charts/ Size guide

Create custom size charts & size guides, add text and images to make it look how you want.

About Best Fit ‑ Size Charts

Why you need size charts / size guides

Did you know the majority of returns for eCommerce apparel and sized items are due to the customer not being satisfied with the fit or sizing?

High return rates resulting in lost revenue can be traced directly to sizing issues. Uncertainty about the fit or size of a product is why many would-be online customers opt to drive to the store for an item before purchasing.

That's where Best Fit - Size Charts comes in.

We developed Best Fit - Size Charts so you can create beautiful easy to use size charts & size guides for all your products.

This gives your customers the confidence you need to make a sale, and reduce your lost revenue on returns.

Do you want an easy solution to handle all your size charts & size guides?

Do you have multiple products that need a different size chart / size guide for each?

Do you just need a better way to display your size charts & size guides?

If you answered yes to any of these questions Best Fit - Size Charts is your best solution.

Easily create size charting & size guides

  • Add custom titles, descriptions, and images.
  • Create custom size charts / size guides.
  • Select which products or product collections you want them to appear in.
  • A link to your size chart / size guide will be displayed in the correct product.

Easy to Customize

We make it easy to add all the information you need on your size charts/ size guides

No Coding Required.

Once you run our app the code gets automatically installed into your theme.

Easy peasy!

No need to input the code or contact customer service. It's already done.

Unlimited Size Charts/ Size Guides

Instead of displaying every size chart / size guide and annoying your customer, our app displays only the size chart / size guide for the product they are looking at. This makes it easy for the customer to find the sizing they are looking for.

Choose what products or collections of products you want the size chart / size guide to show up in.


  • Clothes Size Charts
  • Shirt Size Charts
  • Hat Size Charts
  • Bra Size Charts
  • Apparel Size Charts
  • Shoe Size Charts
  • Ring Size Charts
  • Bracelet Size Charts
  • Necklace Size Charts
  • Accessory Size Charts
  • Product Dimensions

See the app in action

Explore how the app works in an example store.

View example store

Media gallery



Basic Plan


Free for 1 size chart

  • One size chart/ size guide

  • Advanced layout

  • Size chart icons

Premium Plan


  • 14 day free trial / Free for Shopify Development Stores

  • Unlimited size charts/ size guide

  • Advanced layout

  • Size chart icons

* All charges are billed in USD. Recurring charges, including monthly or usage-based charges, are billed every 30 days.

Overall rating
5.0 of 5 stars
Based on 32 reviews

  • 5 of 5 stars
    97% of ratings are 5 stars
  • 4 of 5 stars
    3% of ratings are 4 stars
  • 3 of 5 stars
    0% of ratings are 3 stars
  • 2 of 5 stars
    0% of ratings are 2 stars
  • 1 of 5 stars
    0% of ratings are 1 stars

Most recent reviews

Meha's MEGA Mercantile

Where do I start? AMAZING, EASY, FRIENDLY and SIMPLE. Im older than dirt and I'm forever at war with spreadsheets and then Best Fit appeared. I was able to create a size chart in just a few minutes and actually insert it on my website and it worked and looks awesome. Im actally working on my 6th size chart now. Thxs Best Fit for getting this Old Lady up to speed.

A. e V. Shopping

Una applicazione semplice e utilissima su uno store di moda é assolutamente necessaria; io l´ho installata e l´ho usata attivamente solo dopo circa una settimana averla installata, se avessi saputo l´avrei utilizzata prima. OTTIMA APP!

hey wednesday

The app works great out of the box. I asked the guys if they could help me move the size guide to another position on the page and they did so without any hassles. Thanks guy, highly recommended!