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Point to Percent Converter

Convert point (pt) values to CSS percent. At the 16px default base, 12pt = 100%.

Last updated: May 21, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution
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What is Point to Percent Converter?

Points (pt) are the standard typographic unit in print. CSS percent for font-size is relative to the parent element's font size. The formula is: **% = pt × (96÷72) ÷ base × 100**.

At 16px base: 12pt → 16px → 100%. This is useful when translating print typographic sizes into responsive percent-based CSS declarations.

How to Use Point to Percent Converter

1

Set the base (parent) font size — default 16px

2

Enter pt values, comma or newline separated

3

Copy the percent output or use the reference table

Common Use Cases

  • Developers translating print typographic specs from pt to percent for screen CSS.
  • Front-end engineers expressing print sizes as percent for responsive typography.
  • Designers converting point sizes to percent for a CSS type scale.

Example Input and Output

Convert common print point sizes to CSS percent at the 16px default base.

PT values
9
10
12
14
Percent output
9pt → 75%
10pt → 83.3333%
12pt → 100%
14pt → 116.667%

Privacy

All conversions run in your browser. No data is sent to any server.

Frequently Asked Questions

Why is 12pt = 100%?

12pt × (96/72) = 16px. 16px ÷ 16px base × 100 = 100%. The standard print body size maps exactly to the browser default body size.

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