Shipping Weight [shipping_weight] Field for Product Feed

Optional for each product

The shipping_weight attribute specifies the weight used to calculate shipping costs in Merchant Center.
This is particularly important when using carrier-calculated rates or shipping weight tables.

If the package weight exceeds supported limits, use the shipping_label attribute instead to configure special rates.

When to use

• When shipping cost calculations in Merchant Center are based on weight.
• For carrier-calculated rates or weight-based shipping tables.
• To ensure accurate shipping costs, especially for heavy or bulky items.

If your product requires freight or LTL (Less Than Truckload) shipping, configure these separately using shipping labels and tables.

Format

• Type: Number plus unit.
• Supported units: lb, oz, g, kg
• Limits:
  • Imperial: 0–2000 lb
  • Metric: 0–1000 kg
• Decimals: Supported (e.g., 1.25 kg)
• Repeated field: No

Formatting examples:

Minimum requirements

• Use actual shipping weight (including packaging).
• Pair with dimensions (shipping_length, shipping_width, shipping_height) if using carrier rates that consider volumetric weight.
• Avoid exceeding carrier limits — use shipping_label for oversized/freight items.

Products with invalid formats or exceeding limits will be disapproved.

SEO Tip

While not customer-facing, accurate shipping weight helps ensure the right delivery options are shown improving trust and preventing cart abandonment due to unexpected shipping costs.

Official Source: https://support.google.com/merchants/answer/6324503