A result is only useful if you can see how it was reached. Every tool on this page follows the same rules.
- Your numbers, not ours. The inputs are yours. Where a tool needs an assumption, such as working weeks per year, it’s labeled as an example and you can change it.
- Formulas on the page. Each tool page writes out how the result is calculated, so you can check it or rebuild it in a spreadsheet.
- No prices from us. Where a tool needs a build cost, it asks for the quote you have.
- No email gate. You see your results without signing up for anything.
- Nothing sent unless you choose. Nothing you type is sent anywhere unless you choose to send it to us.
- Share links keep your inputs after the #. That part of a web address is handled by the browser and isn’t sent to the web server when the page loads (see the URI standard, RFC 3986, section 3.5). Anyone you send the link to sees the same inputs.
Treat the results as a starting point, not a verdict. If you’d like a second opinion, talk to an engineer about your results. Want the background first? The guides cover the same decisions in plain language, and the services page shows the work behind each tool.
