A calculator for whatever you sell by size.
Pick your trade to see a live calculator built for it, how it works on a Shopify product page, and answers to the questions store owners ask most.
Flooring
A shopper types the room, gets the number of boxes, and pays box price times boxes.
Whole boxesSee it
Tile
Same shape as flooring with a smaller box and a waste allowance for cuts.
Whole boxesSee it
Wallpaper
Strips per drop and drops per roll, worked out from the wall and kept out of the shopper’s way.
Whole rollsSee it
Paint
Area times coats, rounded up to whole cans over what one can covers.
Whole cansSee it
Mulch, soil, and gravel
A bed and a depth become a volume, then whole bags.
Whole bagsSee it
Made-to-measure blinds
Priced on the exact opening. Choosing an outside mount reveals an overlap field and prices the finished size. Fabric colors show as swatches.
Made to measureSee it
Banners and signs
Priced per square foot of the exact size, plus a setup fee and any finishing options.
Made to measureSee it
Fabric by the yard
One calculator on every fabric. Each product keeps its own price per yard.
By the yardSee it
Selling something else by size? See every example. If you can describe the rule you charge by, Spark Kit can build it.
Start selling by measurement on Shopify.
Add Spark Kit to your store and set up your first calculator in minutes. Free trial, no code required.