Accessibility

We aim to meet the Web Content Accessibility Guidelines (WCAG) 2.2 at level AA. In practice that means:

• Every page works with a keyboard alone, with a visible focus indicator.
• Calculators use labelled fields, explain errors next to the field that caused them, and announce updated results to screen readers.
• Every chart has a text summary and a data table for screen readers, and colors aren’t the only way information is shown.
• Text meets contrast guidelines in both light and dark themes, and the site respects reduced-motion settings.
• Tables reflow on small screens, and touch targets are at least 40 pixels.

Known limitations

Partner websites we link to are outside our control and may not meet the same standard.

Report a barrier

If something on this site is hard to use, please email [email protected] with the page address and what happened. We’ll fix what we can and reply with a workaround if a fix takes time.