We'd like to hear from you if you've found an error in a conversion figure, have a suggestion for a new tool, or have a general question about the site.
You can reach the Hiseem team by email at hello@hiseem.com. We aim to reply within a few business days.
If you're reporting an inaccurate conversion figure, please mention which calculator page you were using and, if possible, the specific value that looked wrong — that makes it much faster for us to check and correct.
For anything related to advertising, partnerships or press, please use the same email address above with a short description of your enquiry in the subject line.