Accessibility information

Last updated: 15 September 2026

The calculator uses labeled controls, native keyboard-operated buttons and expandable sections, a skip link, visible focus indicators, responsive layout, text alternatives for the supplied logo, and tables alongside charts. Privacy choices are available without using a mouse.

Use Tab and Shift+Tab to move between controls, Enter or Space to activate buttons, and Escape to close a webpage selection result. Scrollable data tables can receive keyboard focus. Browser zoom is supported.

These improvements do not establish full WCAG conformance or legal certification. Some Office host behavior, browser-extension overlays, third-party components, and assistive-technology combinations require further testing. Offline arithmetic remains available without enabling external integrations.