Best Fit ‑ Size Charts

Best Fit ‑ Size Charts

by Relentless Apps

Easily create unlimited size charts & size guides

5.0 of 5 stars(15 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


  • 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 15 reviews

  • 5 of 5 stars
    100% of ratings are 5 stars
  • 4 of 5 stars
    0% 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


Amazing!!! Very good app here and has helped my store heaps. I was telling to people to scroll through images before this, so it is very professional now.

Also good follow-ups post installation and very easy to use !

Safe Haven

Very easy to use! Makes my website look more professional. Hoping the sizing chart will prevent as many returns. Had several charts created and on my website in minutes.

Amber & Indigo Lingerie

I used this app to add a pop up size chart on my product page so shoppers don't get redirected to a new page when checking their size. It was really easy to set up and it looks great on the website. It would be good if the size chart button had the option to position it to left or right of the screen, at the moment the only option is for it to go above or below the add to cart. However, it's functionality outweighs this minor detail.