shipping_weight
The item's weight for shipping calculation. Used by channels to compute shipping costs when shipping isn't explicitly defined at item level.
Also known as: weight
Channel support
| Channel | Status | Field name | Notes |
|---|---|---|---|
| Google Merchant Center | Optional | shipping_weight | — Docs → |
| Meta Commerce Manager | Optional | shipping_weight | — |
| TikTok Shop | Recommended | shipping_weight | — |
| Pinterest Catalog | Optional | shipping_weight | — |
| Amazon | Recommended | package_weight | — |
| Bing Merchant Center | Optional | shipping_weight | — |
Why it matters
Channels with weight-based shipping calculation need this to compute accurate shipping costs. Without it, channels fall back to flat-rate shipping which can produce overstated costs that suppress conversion.
Weight-based shipping calculation depends on this field for accuracy. Without it, channels default to flat-rate shipping or fall back to assumed weights, which often inflates shipping cost in placements. For lightweight but voluminous items (pillows, packaging-heavy products), the weight matters less than dimensions; for heavy items, the weight dominates.
The format with explicit unit (`500 g`, `1.5 kg`, `2 lb`) is what channels require. Common mistake is omitting the unit (`500`) which channels reject. The unit consistency within a feed matters more than which unit — grams or kilograms both work, but mixing across items is confusing for the channel and for any downstream automation reading the data.
Carriers round up at billing — a 0.95 kg item gets charged as 1 kg in most shipping schemes. The feed value should be precise to the nearest 10g but doesn't need extreme precision because carriers round anyway. Precision in this field is a signal of catalog discipline, not a meaningful contributor to shipping cost.
Format rules
-
Numeric value + unit (e.g. '500 g', '1.5 kg', '2 lb')
Applies to: Google Merchant Center, Meta Commerce Manager, Pinterest Catalog, Bing Merchant Center
-
Supported units: lb, oz, g, kg
Applies to: Google Merchant Center, Meta Commerce Manager, Pinterest Catalog, Bing Merchant Center
Valid examples
500 g Half-kilogram item
1.5 kg Heavier item
2 lb US imperial
Common mistakes
500g Missing space between number and unit
FAQ
Should I use grams or kilograms?
Either is accepted. For items under 1kg, grams reads more naturally. For larger items, kilograms. Consistency within the feed matters more than which unit.
Last reviewed: 26 May 2026
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