Made to measure
Made-to-measure blinds, priced live on your Shopify store.
Shoppers enter the width and drop of their window and see the price for their exact size. That price goes through your normal cart and checkout.
A real Spark Kit calculator with a sample price. Type in your own numbers.
Custom sizes should not mean "request a quote".
Every window is a different size, so a fixed variant list never fits and a quote form makes shoppers wait for a price they wanted now. Most of them do not wait. Pricing the exact size live on the product page turns the same visitor into an order.
Any size, priced instantly
Width and drop in, price out, calculated from the rate you set. No quote form and no back and forth.
Options that change the price
Mount type, overlap, or any choice that changes the finished size or the price can be part of the calculator. Fabric colors show as swatches, and the one picked goes on the order.
That exact price at checkout
The price the shopper sees is the price in their cart and at checkout, with their measurements on the order.
Live on your store in an afternoon.
Install it, set up your calculator, and place it on your product page. No code, no developer, no waiting on a build.
- 01
Add it from the App Store
Install Spark Kit on your Shopify store and start your free trial. Everything runs inside your Shopify admin, nothing else to host or maintain.
- 02
Build your calculator
Spark Kit reads your products and builds a calculator for each kind you sell by size. Ask for any change in plain words and check it in a live preview.
- 03
Place it and go live
Drop the calculator onto your product page in the theme editor. Shoppers enter their dimensions, see a live price, and add the right amount to cart.
Made-to-measure blinds calculator questions
Does the custom price really carry through to checkout?
Yes. Spark Kit carries the exact price for the shopper’s measurements through your normal cart and checkout, and it works on every Shopify plan.
Do I see the measurements on the order?
Yes. The shopper’s measurements are attached to the order, so you know exactly what to make.
Can I set my own formula?
Yes. Spark Kit writes the math for you and you can change it any time: a rate per square inch or foot, a minimum price, a setup fee, or extra for certain options.
Will it work with my theme?
Yes, on any current Shopify theme that supports app blocks (every Online Store 2.0 theme, including Dawn). You add the calculator to your product page from the theme editor, with no code to paste in.
What does it cost?
Spark Kit is $14.99 per month with a free trial, and you can cancel any time. One subscription covers every calculator on your store.
More questions? Read the full FAQ, or try every calculator.
Calculators for other trades
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.