Contact Us

We read every message. The quickest way to reach us is by email.

• Email: info@problemcracker.com
• Response time: usually 1–2 business days

What you can write to us about

Reporting an error

If a calculator gives a result you did not expect, or a page contains information that is wrong or out of date, please let us know. It helps if you include:

• the address of the page,
• the values you entered,
• the result you got and the result you expected,
• your device and browser (for display problems).

The Share button on every calculator creates a link that already contains your inputs, so sending us that link is often the easiest way to report a problem.

Suggesting a calculator or guide

Is there a calculator you wish we had, or a topic you would like explained? Suggestions shape what we build next.

Partnerships

You can send partnership or advertising proposals to the same address. To keep our content independent, we do not accept paid links or sponsored articles. See How We Calculate for our editorial principles.

Privacy requests

To ask about or delete personal data you have sent us (for example, in an email), write to us with “Privacy request” in the subject line. Our Privacy Policy explains what we collect.

What we cannot help with

We cannot give personal medical, tax, legal or financial advice. For questions about your own situation, please talk to a qualified professional (see our Disclaimer). In a medical emergency, call 911 or your local emergency number.