Length [length], Width [with], Height [height] & Weight [weight] Fields for Product Feed

Optional for Physical Products and Accurate Representation in ChatGPT

The length, width, height, and weight fields describe a product’s physical attributes.
They ensure that ChatGPT can display accurate product dimensions, support shipping estimations, and improve search relevance for size or weight-related queries.

These attributes are particularly important for physical goods, such as electronics, furniture, apparel accessories, or packaged items.

When to use

Use these fields whenever product size or weight is relevant for display, filtering, or shipping.
They may replace or complement the combined dimensions field.

• [length], [width], and [height] are optional, but should be provided together for accuracy.
• [weight] is required for all physical products.

These measurements help ChatGPT interpret scale, shipping constraints, and physical comparisons between products.

Format

• Type: Number + unit
• Units: Required for all values
• Accepted units: cm, mm, in, ft, lb, oz, kg, g
• Repeated field: No
• Schema.org property: Product.depth, Product.width, Product.height, Product.weight

Examples:

Combined Example: length: 10 mm / width: 8 mm / height: 5 mm / weight: 1.5 lb

Relationship with Google Product Feed Attributes

ChatGPT’s length, width, height, and weight attributes directly mirror Google’s product dimension attributes:
product_length, product_width, product_height, and product_weight.

✅ If your feed already includes Google’s dimension attributes, you can safely reuse them for ChatGPT with no format changes.

Minimum requirements

Note: Missing units or incomplete sets of measurements may affect product accuracy and eligibility for ChatGPT results.

• Always include units (cm, in, lb, etc.).
• Provide all three dimensions (length, width, height) if any are used.
• Use numeric values only.
• Ensure weight is present for all physical products.
• Don’t include packaging dimensions unless specified.
• Don’t mix units or leave them out.

SEO / AI Tip

Providing accurate size and weight information enhances product comparisons and recommendations in ChatGPT.
It helps the system identify compact or lightweight products and improves shipping cost predictions and filtering accuracy.

Official Source: ChatGPT Product Feed Specs