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Size charts built for the mobile product page

A size guide built for the mobile product page, with fit guidance that answers the question before it turns into a return.

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Works with Online Store 2.0 themes

  • Conversion
  • Store Design
  • Built mobile-firstA floating size button, not a table squeezed into a tab.
  • Your measurementsYour own rows, sizes and units — inches or centimetres.
  • Fewer wrong sizesFit guidance settles the question before checkout does.

What FitBlocks: Mobile Size Chart does

  • Custom size tables

    Build the chart from your own measurements, rows and size names. Nothing is locked to a preset.

  • Fit guidance

    Tell shoppers when an item runs small, runs large, or fits true to size.

  • Floating size button

    A tap target that stays within reach on the mobile product page and opens the guide in place.

  • Inches or centimetres

    A unit toggle, so an international shopper reads the chart in the units they already think in.

  • Product recommendations

    Surface related items from inside the size guide, so the drawer does more than measure.

  • Store-wide or selective

    Apply one chart everywhere, or attach a different chart to the products that need it.

How it works

  1. Build your chart

    Enter your measurements, name the sizes, and pick inches or centimetres.

  2. Choose where it shows

    Apply it across the store, or attach specific charts to the products that need them.

  3. Let shoppers check

    The floating size button opens the guide without taking anyone off the product page.

Who it is for

  • Apparel and footwearWhere the wrong size is the most common reason for a return.
  • Mobile-heavy storesWhere most shoppers never see a desktop layout.
  • International sellersShoppers who think in centimetres, not inches.
  • Fit-led brandsProducts where the measurements are the whole decision.

Frequently asked questions

Yes. You build the table from your own rows, size names and measurements, so it matches how your products are actually cut rather than a generic template.

That is what it is built for. The size-help button sits within thumb reach on the product page and opens the guide in place, instead of sending shoppers to a separate page they have to navigate back from.

Yes. Apply a single chart across the store, or attach a specific chart to one product or a group of products — useful when a jacket and a t-shirt do not share a size table.

Yes. A unit toggle lets an international shopper read the chart in the units they already use, which removes a conversion step for stores selling across markets.
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