Best Fit ‑ Size Charts

Best Fit ‑ Size Charts

by Relentless Apps

Easily create unlimited size charts & size guides

4.9 of 5 stars(47 reviews)

Unlimited Size Charts

Create unlimited size charts. Choose which products, collections, or vendors 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, collections, or vendors 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.

4.9 of 5 stars

The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
  • 5 of 5 stars
    96% 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

Prouder Posture

Great app! Really easy to use and straight forward. The support team was really kind and helped me fast with my issues!

Restaurant Merch by Flavour Gallery

This app fits beautifully on the page and it is clear for any customer to access. It helps display the information professionally. More importantly, their customer service was exceptional.

Troop Your Colours

This app was easy to setup. I wanted some support to customize the colours to match my site. Jon was extremely helpful, he responded quickly and provided the correction instructions. I may have enter the changes in an older version and he offered to do the changes himself. Looks great. I highly recommend this app.