How to Collect Measurement Data at Checkout in Shopify
Three options: line-item properties (best), cart attributes (good), checkout extensions (Plus).
Option 1 — Line-Item Properties (Recommended)
Customer fills measurement form ON the product page. Hits "Add to cart" — measurements attach as properties to that line item. Persists through checkout. Visible in Shopify admin Order Detail. Works on every plan.
This is what Tailor Size Guide uses. Most reliable approach.
Option 2 — Cart Attributes
Set cart-level attributes (e.g., "preferred_unit": "cm") that apply across all items. Less granular than per-item but useful for global preferences.
Option 3 — Checkout Extensions (Shopify Plus)
Add custom fields directly to the checkout flow with Checkout UI Extensions. Capture measurements during checkout itself, not before. Plus only.
FAQs
Can I collect measurements at checkout?
Yes — line-item properties or cart attributes.
Editable after order?
Default no, but possible with custom flow.
Capture measurements pre-checkout
Tailor Size Guide uses line-item properties — works on every Shopify plan.