Point to Percent Converter

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

Last updated: May 21, 2026

Base font size

Formula: % = pt × (96÷72) ÷ 16 × 100

Point (pt) Values

Separate values with commas or newlines. "pt" suffix is optional.

Percent Output

9pt → 75% 10pt → 83.3333% 12pt → 100% 14pt → 116.667%

Reference table — at 16px base

PT	%	PT	%	PT	%
6pt	50%	7pt	58.3333%	8pt	66.6667%
9pt	75%	10pt	83.3333%	10.5pt	87.5%
11pt	91.6667%	12pt	100%	13pt	108.333%
14pt	116.667%	16pt	133.333%	18pt	150%
21pt	175%	24pt	200%	28pt	233.333%
36pt	300%	48pt	400%	72pt	600%

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

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

Enter pt values, comma or newline separated

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

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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