Screen Resolution Converter

Free online typography unit converter.

Convert between all typography units instantly with accurate results, formulas, and reference tables.

No signup required.

Last updatedHow we build & check our tools

How This Tool Works

Our Typography Unit Converter provides instant, accurate conversions between all major typographic units. Whether you are working in print (like points or millimeters) or digital media (such as pixels or 'rem'), this tool handles the complex mathematical formulas behind each unit.

Simply select the unit you are starting with and the unit you wish to convert to. For example, if your design requires a 16px font size but you need it expressed in 'rem' for relative scaling, just input 16px into the source field. The converter will instantly calculate the precise equivalent value, ensuring perfect consistency across all platforms.

  • Key Units Handled: pt (points), px (pixels), em (relative to parent font size), rem (root em, relative to the HTML root font size).
  • Accuracy Guaranteed: We use industry-standard conversion ratios to maintain typographic integrity.

Why This Matters for Your Design

Choosing the correct typography unit is fundamental to creating scalable and accessible designs. Using absolute units (like 'px') can lead to inconsistent sizing when viewed on different devices or browsers, breaking your intended visual hierarchy.

Relative units, such as rem and em, solve this problem by linking font sizes to the root HTML element or the parent element. For instance, setting a body text size using rem ensures that if the user adjusts their browser's base font size, your typography scales proportionally, greatly improving accessibility.

  • Consistency: Maintains visual integrity regardless of screen resolution.
  • Scalability: Essential for responsive web design principles (RWD).
  • Accessibility: Supports user preferences for font sizing, meeting WCAG guidelines.

Common Mistakes to Avoid

The most common mistake is confusing the use cases for 'em' versus 'rem'. Many designers incorrectly assume they are interchangeable, which can lead to compounding font size errors.

Remember this crucial distinction: em is relative to the parent element’s font size. If you set a heading at 1.5em and that heading is nested inside another element set at 1.2em, the resulting size will be 1.8em (1.5 * 1.2), which is often not what you intended.

  • Avoid Deep Nesting: Over-reliance on nested em units can lead to unpredictable scaling.
  • Prefer Root Units: Use rem for most global sizing elements (headings, body text) linked back to the HTML root element.
  • Check Context: Always verify your unit choice based on whether the size needs to scale globally or locally.

Tips for Best Results in Typography

While this tool handles the math, achieving beautiful typography requires thoughtful application. Before converting units, consider your overall design system and establish a clear typographic scale.

A good practice is to use a mathematical ratio (like the golden ratio) to define the relationship between your headline size, subheadings, body text, and captions. For example, if your base body font is set at 16px (or 1rem), your primary H1 might be optimally sized around 2.5rem, while your caption could be 0.875rem.

  • Establish a Baseline: Define one core unit (usually rem) as the foundation for all other sizes.
  • Test Across Viewports: Always test your design using different breakpoints (e.g., mobile, tablet, desktop) to ensure proportional scaling is maintained.
  • Use Spacing Units: Apply this conversion tool not just to font size, but also to margins and padding units for consistent rhythm.

Frequently Asked Questions

Common questions about the Screen Resolution Converter

1920×1080 (FHD), 2560×1440 (QHD), 3840×2160 (4K). Mobile varies widely.

Sources & References

Typographic units (points, picas, em)

Definitions of CSS and typographic length units used for point, pica, pixel, and em conversions.