Quote Screens That Calculate by Measurement and Option
If changing a measurement or material means starting a quote calculation again, your pricing rules can move into a shared screen. I build custom quoting apps around the calculations in Excel and Google Sheets, combining dimensions, product options and extras while showing staff the components behind the price.
Make the route from measurements to price explicit
For a curtain quote, width, height, fabric and installation may all affect the result. Minimum charges, rounding, waste allowance and additional labour are separate rules. Input units stay visible where centimetres and metres need conversion. We define the discount staff may apply and the point at which approval is required, with calculated items visible alongside the final total.
Start with one family of pricing rules
A single product group’s calculator gives us a narrow first version to try quickly. We compare it with spreadsheet examples and test boundary values and missing choices. Updated rules apply to new quotes while accepted quotes retain their amounts. PDF output or conversion to an order can follow if useful; verifying the calculation comes before automating the document.
Frequently Asked Questions
Can I update the pricing rules later?
An authorised user can maintain a list or rule screen. Changes carry an effective date while earlier quotes retain the calculation applied to them.
How are orders below the minimum measurement handled?
Your method determines the result: a minimum charge, minimum billable size or refusal of the order are different rules. We confirm the correct one using examples.
Discuss your workflow
Describe your workflow on the contact page. Explore other examples of custom web apps for your team.
Related services
How do I work?
Work-hour packages
Tell me about your website and what you need on WhatsApp or by phone; we agree on a work block of somewhere between 5 and 40 hours and I start doing what is needed. What you get is not a calendar window — it is net working hours spent directly on your business. I can use 40 hours working three days straight, or deliberately spread it out and finish it over a year — whatever the work calls for. I do not spend my time estimating how long something will take, I spend it doing the work; every hour I spend has a lasting result on your site. We keep going for as long as you find it useful.
Why not monthly?
Is 40 hours a week?
On a fixed monthly fee both sides are watching the wrong thing: you watch a fixed cost, the other side watches how many more contracts like this they can line up. Working by the hour puts us both in front of the same thing — the real value of the work that got done. I know not having an upfront answer to "how much will this cost in total?" is the natural cost of this model. But instead of paying a fixed fee for months to a setup that is not producing results, you only pay for the qualified time spent on your work — and you see exactly where that time went, start to finish. That is why my clients keep coming back.