Sixtyfour
Sixtyfour is a monospace font in 1 weight, also available as a variable font. Its lowercase letters are 67% wider than the typical monospace font. Last updated 5 September 2025.
Editing a PDF that uses Sixtyfour
Most PDFs embed only the letters they already use. Type a new letter and many editors either refuse or swap in a different font. MythosPDF recognises Sixtyfour from the widths stored in your PDF, loads the complete open font, and sets your new text in Sixtyfour itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 1000 units per 1000 em |
|---|---|
| Average capital letter width | 1000 units per 1000 em |
| Word space | 1000 units per 1000 em |
| Digits | tabular (every digit is 1000 units wide, so columns of numbers line up) |
| Spacing | monospaced |
| Width of i compared with m | 100% |
| Printable ASCII characters covered | 94 of 94 |
| Category | Monospace |
Weights and styles
Languages beyond basic Latin
Open fonts closest to Sixtyfour
Measured on every printable character both fonts contain. A smaller difference means the same words take the same space, so lines break in the same places.
- Material Symbols Sharp Regularidentical letter widths (0 units)
- Material Symbols Rounded Regularidentical letter widths (0 units)
- Press Start 2P Regularidentical letter widths (0 units)
- Material Symbols Outlined Regularidentical letter widths (0 units)
- Sixtyfour Convergence Regularidentical letter widths (0 units)
- Material Symbols Regularidentical letter widths (0 units)
- Libertinus Keyboard Regularloosely similar widths (106.8 units)
- Rubik Mono One Regularloosely similar widths (150 units)
Compare Sixtyfour
Questions people ask
+Can I edit a PDF that uses Sixtyfour?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in Sixtyfour itself, loaded from the open font, so the edit matches the rest of the page.
+Is Sixtyfour free to use?
Sixtyfour is released under the SIL Open Font License 1.1, an open licence that allows free use in documents, including commercial ones. Check the licence text for your exact use.
+Which font is closest to Sixtyfour?
By measured letter widths, Material Symbols Sharp is the closest match among open fonts (a mean difference of 0 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does Sixtyfour support?
It includes these character sets: Latin, Central European, Math symbols, Symbols.
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