Use an answer with its assumptions
Using the site
These tools and guides are provided for general information, learning, and planning. You are responsible for checking your inputs and deciding whether the stated assumptions apply to your situation. Use the site lawfully and avoid interfering with its availability or security.
Calculation limitations
Each tool page states its formula, conventions, and limitations. Outputs may be approximate or rounded. They do not replace official records, contracts, product instructions, or advice from an appropriately qualified professional. The site does not guarantee that a result is suitable for every context.
Your data and content
You retain responsibility for the text and values you enter. Local processing does not authorize you to disclose someone else's private information. Do not send sensitive data in a support request when a minimal reproducible example can explain the problem.
Availability and corrections
The site can be changed, corrected, or temporarily unavailable. Please report a reproducible problem using the contact page. A report does not imply a response-time guarantee, and the website does not provide an emergency or time-critical service.
Contact and legal rights
Questions about these terms may be raised through the contact page. These terms do not exclude rights or protections that cannot lawfully be excluded under applicable law. Last updated: October 13, 2026.