Best Fit ‑ Size Charts

Best Fit ‑ Size Charts

by Relentless Apps

Easily create unlimited size charts & size guides

4.9 of 5 stars(44 reviews)

Unlimited Size Charts

Create unlimited size charts. Choose which products, collections, or product tags you want your size charts to connect to.

Beautiful & Responsive

Create beautiful, easy to use, responsive size charts that look amazing on every device.


Customize by adding text and images to your size chart. Change the size chart icon, link text, and link placement of the size chart button.

About Best Fit ‑ Size Charts

Why you need size charts

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 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?

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

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

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

Easily create size charts

  • Add custom titles, descriptions, and images.
  • Create custom size charts
  • Select which products or product collections you want them to appear in.
  • A link to your size chart 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.

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

Instead of displaying every size chart and annoying your customer, our app displays only the size chart 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 to show up in.

Copy & Paste from Excel, CSV, or Google Docs

Have size charts already saved in another program?

Just copy and paste them into our app. We will create all the necessary columns and rows for the size chart.


  • 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

Any size chart you can think of you can create in our app.

See the app in action

Explore how the app works in an example store.

View example store

Media gallery


Pricing 14-day free trial

Basic Plan


One size chart

  • Advanced layout w/ image and text

  • Customizable size chart icons

  • Edit size chart button text

  • Copy and paste data from Excel, CSV etc.

Premium Plan


Unlimited size charts

  • Advanced layout w/ image and text

  • Customizable size chart icons

  • Edit size chart button text

  • Copy and paste data from Excel, CSV etc.

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

Overall rating
4.9 of 5 stars
Based on 44 reviews

  • 5 of 5 stars
    95% of ratings are 5 stars
  • 4 of 5 stars
    2% of ratings are 4 stars
  • 3 of 5 stars
    2% 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

House of Leidy

Very easy to set up, the instructions are very clear and is working perfectly. Customer service is very attentive and friendly. Love it!

Adele's Shoe Gallery

I used this app to create a standard frame, size-chart and it did the job really well. The App guys were super helpful and really quick to respond to a couple of tweaks I wanted to make. Unfortunately you have to use the app developers to make changes to font, size, position etc... as code needs to be written and then placed in the back end of the Shopify program. Fortunately my husband knows a little bit of this stuff as I could not have done it on my own (hence the three stars).

Developer reply

March 23, 2020

I asked you if you needed help adding code as some people need extra help with things like this. The font size of the size chart is something that only a few customers have asked to change and that's why we haven't found the need to make it a setting in our app.

I'll make this a note with my partner about possible updates for the future.

Miss Frida

The app looks very well on my web. It gives lots of info on sizing, and I can have different ones for each product.Easy to use and super friendly and quick support! I would highly recommend to everyone.