Built-in features
Pages use semantic headings, visible labels, keyboard-operable controls, focus indicators, color contrast, reduced-motion support, alternative image text, and print-friendly result layouts.
Calculator results
Results are presented as text and tables rather than color alone. Interactive forms use labels and browser-native validation where practical.
Request assistance
If a page, worksheet, or result is difficult to use, email [email protected] with the page name and the barrier encountered. Do not include toll-account or payment information.
Ongoing review
Accessibility is part of editorial updates. We welcome specific reports that help improve navigation, readability, or tool operation.