How can I add a custom sizing feature for blinds and curtains?

Topic summary

Goal: Add a made‑to‑measure pricing flow for soft furnishings in Shopify where customers enter width and drop (height) and see a calculated price.

Key requirements:

  • Price must be selected from a matrix with size breakpoints (bands), not calculated by area (e.g., not per sq ft).
  • Customer inputs (e.g., 120 cm x 150 cm or 500 mm) should map to the correct width and drop ranges to return a single price from the lookup table.
  • Example grid provided: bands like “up to 600 mm width” × “up to 600 mm drop,” etc. (the table is central to understanding the logic).

Context and comparable solutions:

  • One participant currently uses WooCommerce “Calculation Lookup Tables” and seeks an equivalent on Shopify.

Suggested Shopify solution:

  • A dedicated app for quoting curtains and blinds was recommended, with a public demo and Shopify App Store link shared.

Status:

  • No confirmation of implementation or outcome from the original poster.
  • Next step would be to evaluate Shopify apps that support dimension-based lookup tables and verify they handle non-linear breakpoints.
Summarized with AI on December 24. AI used: gpt-5.

Hi @Azza786

I would assume your base price would be based on a base dimension and as the user inputs fields the quantity & thus the price will change?

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