Online calculator: it calculates while they fill it in
The client works out the price and leaves a request. No “what does it cost?” email threads.
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What an online calculator is
A person enters the parameters and immediately sees the price or another total, before the request. That is how priced services, delivery, and repairs are calculated, when the first question is the price. The formulas are built in the constructor, no code to write.
How a calculator works
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The person enters data
Area, quantity, options — regular form fields, not a separate spreadsheet.
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The form calculates
Calculation fields and formulas. The total is visible before submit, with no Excel on your side.
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They can order right away
The payment terminal takes the calculated amount. Submission and payment in one form.
What a calculator includes
Calculation fields
Formulas and calculation fields: service or product cost, test scores and other calculations in the form.
Pay the calculated amount
The terminal can take the amount from a field. The client pays what the form just calculated.
The total before you submit
The person sees the price before sending the request. You do not need a separate price list or a spreadsheet.
A submission with the total
After the calculation they can send the request. The total stays in the form statistics.
If it is an order
When the person picks a product without a formula — use an order form, not a calculator.
If it is a test
Test scores are the same calculation, but a different flow: a result screen, not a quote.
Three ways to build a calculator
From a template
Pick a ready-made template and adjust fields, theme and logic for your task.
Choose a templateWith the AI assistant
Describe the task. The built-in AI assistant will suggest ideas and create a form in the builder.
Create with AIPlace the form on your site
On a direct link on our site
Share the form link. No extra page needed.
Inside the page on your site
Embed the form in the page, without a developer.
As a pop-up window
Open on a click, a trigger, or a sticky tab.
FAQ
Create a calculator for free
Put the calculation in the form: the client sees the amount before submit, you get the submission.
Sign up and create a form in the builder, without installing software.
Don't have time to build it yourself?
FormDesigner's specialists can design, build, and configure your form, quiz, or calculator from scratch. Let us handle the complexity while you focus on your business.
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