Fonts like Sixtyfour
12 open fonts whose letters are closest to Sixtyfour, ranked by a glyph comparison. All free for commercial use.
Quick answer
The closest open font to Sixtyfour is Rubik Glitch (similarity 61), then Rubik One and Alfa Slab One. Rubik Glitch is released under the SIL Open Font License 1.1 and is free for commercial use.
Side-by-side comparison
Top lookalikes compared at the same size Sphinx of black quartz, judge my vow
Sphinx of black quartz, judge my vow
Sphinx of black quartz, judge my vow
Sphinx of black quartz, judge my vow
Top lookalikes: licence permissions
Commercial rights side by sideRubik GlitchOFL-1.1
Commercial workAllowed
Logo or wordmarkAllowed
WebsiteAllowed, with conditions
App or gameAllowed, with conditions
Modify the fontAllowed, with conditions
Share the font fileAllowed, with conditions
Sell the font fileNot allowed
No credit needed in your workAllowed
Rubik OneOFL-1.1
Commercial workAllowed
Logo or wordmarkAllowed
WebsiteAllowed, with conditions
App or gameAllowed, with conditions
Modify the fontAllowed, with conditions
Share the font fileAllowed, with conditions
Sell the font fileNot allowed
No credit needed in your workAllowed
Alfa Slab OneOFL-1.1
Commercial workAllowed
Logo or wordmarkAllowed
WebsiteAllowed, with conditions
App or gameAllowed, with conditions
Modify the fontAllowed, with conditions
Share the font fileAllowed, with conditions
Sell the font fileNot allowed
No credit needed in your workAllowed
All 12 open lookalikes, ranked
Comparison based on letter shape and edge texture⚠️ No open font is very close; these share some traits.
#1
Rubik Glitch OFL-1.1
Similarity 61 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#2
Rubik One OFL-1.1
Similarity 53 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#3
Alfa Slab One OFL-1.1
Similarity 51 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#4
Russo One OFL-1.1
Similarity 51 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#5
Black Ops One OFL-1.1
Similarity 51 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#6
Ultra Apache-2.0
Similarity 49 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#7
Bowlby One OFL-1.1
Similarity 49 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#8
Rubik Maze OFL-1.1
Similarity 49 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#9
BBH Hegarty OFL-1.1
Similarity 48 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#10
Archivo Black OFL-1.1
Similarity 48 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#11
Chunk Five OFL-1.1
Similarity 47 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#12
Alien Block OFL-1.1
Similarity 47 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
How the similarity score works
Each score is calculated by comparing 62 letters and digits (A-Z a-z 0-9) rendered at a 160px cap height on a 32×32 grid with 3px gaussian blur, combined with edge-orientation texture (weighted at 15%).
Scores are normalized on a standardized scale: 100 represents identical letterforms, and 0 represents an average pair among the 1571 fonts compared.