Contact Us

Found a bug in a calculator? Think one of our figures is wrong? Want a calculator we don't have yet? We want to hear about it - this site is only useful if the numbers are right.

Email us directly at [email protected]. We read every message and reply to real questions, though we can't promise a reply to everything given this is a small, free site.

Before You Email

If you've spotted a figure that looks wrong, it helps to include which calculator, what inputs you used, and what you expected versus what you got. See our methodology page for how we source and check the figures behind each calculator - if a source has changed or we've made an error, we want to fix it.