Contact
Found a bug, have a calculator request, or want to send feedback? We'd love to hear from you.
For bug reports, calculator requests, and general feedback.
GitHub
Found a code issue or want to contribute? Open an issue.
Calculator request
Want a new calculator? Tell us what you need and we'll consider it.
Email us with the calculator name, what inputs it should take, and what result you want. We'll build it if it fits the site.
Note: Calnivo is a free tool and we don't offer personalized financial, medical, or legal advice via email. For questions about your specific situation, please consult a qualified professional.