What are WCAG guidelines for font sizes?

WCAG 2.1 recommends a minimum font size of 16px for body text. Text should be resizable up to 200% without loss of functionality. The guidelines also emphasize maintaining sufficient contrast and proper spacing for readability.

How do I ensure my font sizes are accessible?

Use relative units (rem/em) instead of fixed pixels, maintain a minimum body text size of 16px, ensure sufficient line height (1.5 for body text), and test with different zoom levels and screen sizes.

What's the difference between px, rem, and em units?

Pixels (px) are fixed units, while rem is relative to the root element's font size and em is relative to the parent element's font size. Using rem/em allows text to scale properly when users change their browser's font size settings.

How do font sizes affect readability?

Font size directly impacts readability by affecting visual clarity, reading speed, and eye strain. Larger sizes generally improve readability but must be balanced with layout constraints. Different fonts may appear larger or smaller at the same numerical size.

Accessible Font Size Checker

Ensure your typography meets WCAG accessibility guidelines with our interactive font size checker. Test different font sizes, spacing, and scaling to create readable and inclusive designs.

Font Size Controls

Adjust typography settings and see real-time changes with accessibility feedback

Font Size (px)

Line Height

Letter Spacing (px)

Word Spacing (px)

Show Accessibility Metrics

The quick brown fox jumps over the lazy dog. Pack my box with five dozen liquor jugs. How vexingly quick daft zebras jump! The five boxing wizards jump quickly.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation.

✓ Font size meets WCAG minimum requirements

✓ Line height meets readability guidelines

Relative Size (rem)

1.000rem

Characters per Line

~22

Typography Accessibility Guidelines

Body text should be at least 16px (1rem) in size
Maintain a line height of 1.5 for body text
Use relative units (rem/em) for scalability
Ensure sufficient contrast with background colors
Test with different zoom levels (up to 200%)
Consider font weight and spacing for readability

Best Practices

Use a clear typographic hierarchy
Maintain consistent spacing ratios
Consider mobile and responsive behavior
Test with different font families
Validate with screen readers
Account for different language requirements

Frequently Asked Questions

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