Contact Us
We are a small team and we read every message. Expect a reply within two working days.
What Can You Contact Us About?
Bug Reports
If a calculator is giving you an incorrect result, please let us know. Include the calculator name, the values you entered, and the result you expected. We take accuracy seriously and will investigate every report.
New Calculator Suggestions
Is there a calculation you need that we do not cover yet? We are always expanding the site and genuinely base our roadmap on what people ask for. Drop us a message with your suggestion and we will consider it for a future update.
General Questions
Questions about how a formula works, why a result looks unexpected, or anything else — we are happy to help. We are not able to provide personalised financial, medical, or legal advice, but we can explain how our calculators work.
Business Enquiries
For advertising partnerships or other business enquiries, please use the same email address and mark your subject line accordingly.
Before You Write
You might find a quicker answer in our calculators list or on the relevant calculator page — each one includes a detailed FAQ section. If you are trying to understand a specific calculation, that is the best place to start.