Fira Mono vs Source Code Pro

Fira Mono and Source Code Pro are both freely available mono fonts often used as alternatives to the same premium typefaces. Fira Mono serves as a replacement for 4 premium fonts while Source Code Pro covers 8. This comparison helps you pick between two strong open-source options.

65% Similarity

Design DNA

Design overlap:50%

Fira Mono

Visual
MinimalReadableModern

Source Code Pro

Visual
MinimalReadableFormal

Highlighted traits are shared between both fonts

Visual Comparison

Fira Mono

Free

Aa Bb Cc 123

The quick brown fox jumps over the lazy dog

ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
0123456789 !@#$%^&*()

Source Code Pro

Free

Aa Bb Cc 123

The quick brown fox jumps over the lazy dog

ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
0123456789 !@#$%^&*()

Feature Comparison

Feature Fira Mono Source Code Pro
Type Free Free
Classification mono mono
Variable Font No Yes
Weights 400, 500, 700 Variable (100-900)
Italics No Yes
License OFL-1.1 OFL-1.1
Language Support latin, latin-extended, cyrillic, cyrillic-extended, greek, greek-extended latin, latin-extended, cyrillic, cyrillic-extended, greek, vietnamese
Source Google Fonts Google Fonts

Best Use Cases

Fira Source
Terminal

Typography for command-line interfaces, terminal emulators, and shell environmen...

Fira Source
Fira Source
Documentation

Typography for technical documentation, user guides, and help content. Documenta...

Fira Source
Code & Programming

Typography for code editors, terminals, and developer documentation. Code fonts ...

Fira Source
Fira Source
Fira Source
Fira Source
Fira Source
Fira Source

Weight & Style Coverage

Fira Mono: 3 weights
Source Code Pro: Variable (100-900)
| 3 shared weights
Fira Mono
Source Code Pro
100
200
300
400
500
600
700
800
900

Performance Comparison

Metric Fira Mono Source Code Pro
Score 49/100 62/100
File Size 157.9 KB 235.0 KB
Weights 3 9 (var)
Italics No Yes
Variable Font No Yes (1 axes)
Language Groups 6 6
CDN Delivery Yes Yes
x-Height Ratio 0.527 0.486
Cap Height Ratio 0.689 0.66

Fira Mono is 33% lighter for the standard weight set (400, 400i, 700).

Which Should You Choose?

Recommended: Fira Mono

  • Replaces 4 premium fonts
  • clean, modern character
  • Popular in healthcare-medical and enterprise-corporate
  • Free under OFL-1.1
View Fira Mono →

Consider: Source Code Pro

  • Replaces 8 premium fonts
  • clean, professional character
  • Popular in healthcare-medical and enterprise-corporate
  • Variable font with continuous weight range
  • Free under OFL-1.1
View Source Code Pro →

Premium Font Coverage

Fira Mono covers 4 premium fonts vs Source Code Pro's 8


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