A calculator for your business
Inputs, formulas, results and design for your requirements, with mobile support and the languages agreed in the quote.
From the maker of calcthai.com
Let customers calculate before they contact you
Do you repeatedly explain a pricing formula, payment schedule or material estimate? Turn it into a website calculator customers can explore, with the assumptions clearly shown.
Opens your email app with a brief to complete. Sending an enquiry does not place an order.
A business example
Painting estimate with an itemised quotation
Change the area, paint price and labour rate to see material quantities and the quotation update. Print or save a PDF in Thai, English or Chinese.
- 01
Enter your area and prices
- 02
Check materials, labour and calculations
- 03
Print a sample quotation
Demo prices and starting values are illustrative. They are not market rates or calculator development prices.
Deliverables to confirm in the agreed scope
Documents and installation
The agreed result summary or quotation, with integration guidance for your existing website and documented limitations.
Acceptance examples
Inputs and expected answers confirmed by the person responsible for the formula, covering normal, boundary and invalid cases.
A guide to price changes and maintenance
Where to update prices, what to test after changes, and the files or access included in the agreement.
Try working examples
These tools on calcthai.com demonstrate the approach. The scope of your project will be agreed around your requirements.
Pricing and discounts
Explore prices before and after a discount and compare the conditions.
Try the calculator →Payment schedules
Show instalments, totals and a full schedule, with PDF output through the print dialog.
Try the calculator →Material estimates
Calculate quantities from area and coverage as a starting point for a quotation.
Try the calculator →What we agree before starting
- The formula and example answers used for verification
- Input fields, results, languages and page layout
- How the tool fits your existing website and what will be delivered
- Price, timeline and revision scope
Details that help us assess your project
- Your business and existing website, if any
- Customer inputs and the results you want
- A formula or sample file without personal data
- Required languages, target date and approximate budget
Start with your requirements
01
Send a brief
Describe what customers will enter, the answers they need and whether you have an existing website.
02
Discuss scope and pricing
The formula and feasibility are reviewed before a quote. Work starts only after mutual agreement.
03
Check examples before delivery
Agreed examples are used to check that the numbers and behaviour match your requirements.
Revisions and pricing
Revision rounds, the acceptance period and post-delivery support are agreed in writing before work starts. Corrections against the agreed formula and acceptance list are distinguished from new formulas, languages or integrations, which need a separate scope and price assessment first.
Each project is priced after reviewing the brief and formula. There is no fixed sales package yet. Sending a brief or trying the demo does not place an order.
Send a short project brief
Describe what the calculator should do. The site owner will use your email to discuss scope and pricing.
Checking whether the form is available…
This acknowledges receipt for assessment. It is not acceptance of work, an order, or confirmation of price or delivery date.
Email your project brief
Email your project brief →If your email app does not open, contact calcthai.contact@gmail.com
This is calculator development, not accounting certification, tax filing or legal advice. Business-specific formulas need confirmation from the person responsible before use.