Size & area calculator for curtains, blinds, glass and made-to-measure products. Customers enter width and height on the product page and see the exact total.

• Instant totals from measurements on the product page — no more quote emails.
• One wizard per product: formula, unit rate and labels — variant handled for you.
• Theme extension matches your store design. Tested on Dawn, Sense and Craft.
• Works offline on the storefront, totals calculated in the browser, no extra call
• Width and height saved on the order line — fulfilment always has the size.