Optional for Physical Products and Accurate Representation in ChatGPT
Weight Required for any Physical Products in ChatGPT
The length, width, height, and weight fields describe a product’s physical characteristics.
They allow ChatGPT to:
- understand product size and scale,
- support shipping and logistics reasoning,
- improve relevance for size- or weight-related queries.
These fields apply only to physical products.
When to use
Use these fields whenever a product has a physical form.
[length],[width], and[height]are optional, but must be provided together if used.[weight]is required for all physical products.- Units are not included in these fields anymore.
Units are now defined separately using:
[dimensions_unit]for dimensions[item_weight_unit]for weight
Format
Dimensions
- Type: Number
- Units: Defined via
[dimensions_unit] - Accepted units:
cm,in - Repeated field: No
| Attribute | Example |
|---|---|
length | 10 |
width | 8 |
height | 5 |
dimensions_unit | cm |
Weight
- Type: Number
- Units: Defined via
[item_weight_unit] - Accepted units:
lb,kg - Required: Yes (physical products)
| Attribute | Example |
|---|---|
weight | 1.5 |
item_weight_unit | lb |
Relationship with Google Product Feed Attributes
ChatGPT dimensions map cleanly to Google’s equivalent attributes:
| Platform | Attribute | Notes |
|---|---|---|
| ChatGPT | length, width, height | Numeric values only |
| ChatGPT | dimensions_unit | Required if any dimension is provided |
product_length, product_width, product_height | Includes unit | |
| ChatGPT | weight | Required |
| ChatGPT | item_weight_unit | Required if weight is provided |
product_weight | Includes unit |
If your Google feed already contains dimension data, SharpFeed automatically validates and adapts it for ChatGPT compatibility.
Minimum requirements
- Use numeric values only for dimensions and weight.
- Provide all three dimensions together if one is used.
- Always include
dimensions_unitwhen dimensions exist. - Always include
item_weight_unitwhenweightis provided. - Do not include units directly in
length,width,height, orweight. - Do not use packaging dimensions unless explicitly required.
SEO / AI Tip
Accurate dimension and weight data helps ChatGPT:
- compare similar products,
- answer size-specific questions,
- reason about shipping feasibility.
Missing or inconsistent unit fields can silently invalidate otherwise correct data.
Official Source: ChatGPT Product Feed Specs
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