Im looking for a tool for my customers to add to my website. I sell window film and we have different window films in various widths and lengths. I want the customer to be able to choose a window film they are interested in and then put the quantity, width and length in milimetres of every window they are looking to cover. The tool will then work out the best width and length of film to buy. I can upload a spreadsheet with a list of every film and available width and lengths. Please can you PM me if you feel you can make this and an estimated cost.