[SYS · 02] Standing system · filed

Sq Ft Calculator

Cart-aware area calculator for products sold by the box. Pattern, waste factor, min-buy logic.

Customers enter their room dimensions. The calculator applies the appropriate waste factor (5% for straight lay, 15% for diagonal, 20% for herringbone), rounds up to the nearest box, enforces the minimum-buy, and adds the correct quantity to the cart.

METRICzerounder-orders shipped
FLOW05stages · soup to nuts
STACK03technologies on the bench
STATELIVErunning in production
N°01Anatomy

The flow.

5 stages from first touch to closed loop. The system runs this path autonomously; the operator only sees the result at the end.

  1. room dimensions
  2. waste factor
  3. box count
  4. min-buy check
  5. add to cart
ENTRYroom dimensionsEXITadd to cartMODEAUTONOMOUS

What the theme would not hold.

he default Shopify quantity picker is useless for flooring. A customer with a 340 sq ft room who doesn't know the box coverage or waste factor will either under-order (returns are expensive for freight-heavy products) or call sales. The Sq Ft Calculator eliminates that call and prevents under-ordering.

N°03Technical surface

How it is actually built.

The stack is on the bench, the wiring is documented, and the instance you ship with is yours to extend after handover.

ON THE BENCH
  • 01Custom UI
  • 02Cart Logic
  • 03Hydrogen
3 layers · all yours after handover

Client-side Hydrogen component with product metafield integration (box coverage, waste presets, min-buy per pattern). Cart mutation via Storefront API. No backend required — all logic runs in the browser with product data fetched at build time.

DELIVERED WITH

Full source · architecture diagram · workflow exports · runbooks · the keys to every credential the system uses.

N°04The compound

What this system compounds.

N°06Next step

Want this — or one shaped to your case?

Every engagement starts with a paid discovery. We map your case against the rack and tell you which systems fit, which get adapted, and what is genuinely new.