Contact Us

Questions, bug reports, and calculator requests are all welcome.

Email

The only way to reach us, and the fastest:

hello@calcperch.com

There is no contact form, on purpose. A form here would mean collecting your message on a server, and this site is deliberately built without one — the tools run in your browser precisely so there is nothing to collect. (The URL shortener is the single exception, and it is disclosed on its own page and in the privacy policy.) Mail goes to a real inbox that one person reads, usually within a day or two, and always within a week.

What to include

You do not need to follow a format, but these are the details that let us actually fix something rather than write back asking for them.

What happens to your message

Reports that turn out to be real get fixed and the page is re-dated — the "Last reviewed" line at the foot of every page moves when the content actually changes, so a correction and its date are the same event rather than two separate claims. How that works, and what else is checked before anything is published, is described on the methodology page.

Your email address is used to reply and nothing else. It is not added to a list, and there is no list to add it to.

What we cannot help with

We cannot give personal medical, legal, tax or financial advice, and it is worth being direct about why rather than just citing policy. The tools here compute — they take numbers you supply and apply a published formula. Whether the answer means you should take the loan, change your diet, or file differently depends on your full circumstances, which an email cannot convey and which we are not qualified to assess. For those questions, a professional who can see the whole picture is the right call.

What we can help with is the arithmetic itself: whether a formula on this site is the right one, what a calculator is assuming, and where a figure came from.

Last reviewed: · Who maintains this · How it is checked

This page describes how the site itself works. If anything here turns out not to match what the site actually does, that is a bug worth reporting — contact.