Questions, bug reports, and feedback are welcome. Email the site at [email protected] — we typically reply within 1 to 3 business days.
When something looks wrong with the calculator, include the browser you are using, the values you entered, and what you expected to happen. Because calculations run locally in your browser, a screenshot helps us diagnose layout and compatibility issues.
We do not provide personalized financial advice by email, and we do not collect or store the figures you enter into the calculator.
For partnership or other business questions, use the same address: [email protected].