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warningshipping
Google Merchant Center Specification Guide

How to Fix: Shipping Weight Missing Measurement Unit

shipping_weight contains only a bare number without units (kg, lb, g, oz).

Official Google Merchant Center Documentation•Rule ID: shipping-weight-units

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Issue Root Cause and Repercussions

Root Cause Breakdown

Database export containing raw numbers (e.g. '2.5') without unit strings.

Why Google Disapproves It

Google carrier-calculated shipping requires unambiguous weight units to compute carrier rates at checkout.

Step-by-Step Resolution Guide

1
Identify Affected Catalog Items

Export your current raw product catalog from your e-commerce store (Shopify Admin > Products > Export or WooCommerce feed plugin).

2
Apply Standard Specification Fix

Append 'kg', 'lb', 'g', or 'oz' to the weight number (e.g., '2.5 kg').

3
FeedPreflight Safe Auto-Fix Behavior

Appends 'kg' to bare numeric shipping weights.

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