Contact
Tell us what to build next
Tool requests, bug reports and corrections all land in the same inbox, and all of them get read.
Email us
The fastest way to reach us. We usually reply within a couple of business days.
What to include
A little detail makes a big difference, especially for bugs. If something gave you the wrong answer, the most useful thing you can send is the exact input you used, the result you got, and the result you expected. If you can, mention your browser and whether you were on a phone or a computer.
Requesting a tool
Tool requests are genuinely the main input into what gets built next. Tell us what you were trying to do and what you ended up using instead — knowing what currently frustrates you is more useful than the tool name alone.
Corrections
If a calculator’s numbers look wrong, or the word solver is missing a word it should know, please say so. Both of those are fixable, and we would rather hear about it than have people quietly bounce.
There is deliberately no contact form on this page. A form would mean collecting and storing your details on a server, which is exactly what the rest of the site avoids. A plain email address does the same job without the database.
What we can’t help with
We can’t give financial, legal or tax advice. The calculators on this site produce estimates to help you think about a decision — they are not a substitute for talking to a professional who knows your situation.