Contact
To report a calculation error, a broken source or an ambiguity on a page, write to [email protected]. Include the calculator URL and the values you entered: that is the fastest way to reproduce a discrepancy.
What to include
The exact page address, the values you entered, the result you got and the one you expected. With those four things a discrepancy can be reproduced in minutes; without them it often has to be dropped.
What we cannot answer
We do not give medical, nutritional, legal or investment advice by email. For a loan, a diet or a tax question you need a professional who knows your situation and carries the responsibility for the answer.