How do I calculate product price based on dimensions in inputs?

Extensions
1

I build a custom app for product customizations. I generated a theme app extension which is used for rendering required UI containing input customers use to set width and height. Here’s how it looks for reference Monosnap . I also use product variants which add extra price for final calculations (e.g. variant 1 - default, variant 2 +150$, variant 3 +300$)

I found that there are apps providing this functionality like this one Measurement Price Calculator - Measurement Price Calculator App - Custom Pricing Calculator | Shopify App Store . I need same functionality that calculates price and adds item to cart with correct price

2

Hi @Nikita_Volosevich ,

It seems like you completed the UI part on the Storefront for this functionality but not the Checkout part. Since checkout is hosted and maintained by Shopify, we can make customization in a controlled manner. If you are trying to achieve dynamic pricing, I suggest taking a look into Cart Transform API. This lets you define the price of a cart line item based on your desired custom logic. You can leverage UpdateOpration where it lets you set the price of the cart line item.