Reader-driven roadmap
Need a calculator
that doesn't exist yet?
Tell me what to compute — the formula, the inputs, who it's for. Each request is reviewed against a textbook or official source and turned into a clean, well-sourced calculator, usually within two weeks.
Tell us what to build.
Fill in as much as you know. Even a sentence helps — we'll figure out the rest.
From your idea to a
published calculator.
A clear, four-step process — designed to keep you in the loop without slowing us down.
Submit your idea
Tell us the inputs, outputs, and use-case. The clearer the goal, the faster we ship.
Expert review
A domain specialist verifies the formula and confirms accuracy expectations.
Designed & built
The UI and the math get built from scratch. No code or design effort needed from you.
You get notified
Opt in to get a single, direct email when your calculator goes live — usually within 14 days.
FAQ
Common questions
about requesting tools.
Quick answers about how requests work. If yours isn't here, send a message.
Still have questions?
No problem — drop a quick note and you'll get a personal reply.
Yes — completely free. If a tool would be useful for other readers too, the design and build are covered on this end and the calculator goes live on the public directory.
Free requests cover public tools that get published on the site. For a private calculator or a custom integration on your own site, send a message through the contact form to discuss it directly.
We only build calculators based on standard, public mathematics and formulas. Please do not submit proprietary algorithms or confidential business formulas.
If you check the notification box on the form, we'll send you a single email with a direct link to your calculator the moment it goes live.