Contact
Contact support, editorial, or correction requests
Use this page for calculator issues, feedback, editorial corrections, policy questions, or general support requests.
Email support
For support, feedback, or editorial corrections, email:
nextgentoolhelp@gmail.comTypical response window: 24 to 48 business hours.
What to include
If you are reporting a problem, include the calculator page, the values you entered, and what result or behavior looked wrong.
Editorial requests
For citation requests, corrections, or questions about how pages are reviewed and updated, see the Editorial Policy page.