Fonts like Rationale
12 open fonts whose letters are closest to Rationale, ranked by a glyph comparison. All free for commercial use.
Quick answer
The closest open font to Rationale is Share Tech (similarity 79), then Homenaje and Saira Extra Condensed. Share Tech 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 sideShare TechOFL-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
HomenajeOFL-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
Saira Extra CondensedOFL-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#1
Share Tech OFL-1.1
Similarity 79 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#2
Homenaje OFL-1.1
Similarity 78 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#3
Saira Extra Condensed OFL-1.1
Similarity 76 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#4
Share OFL-1.1
Similarity 73 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#5
Mohave OFL-1.1
Similarity 71 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#6
Cuprum OFL-1.1
Similarity 70 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#7
Smooch Sans OFL-1.1
Similarity 69 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#8
Sofia Sans Condensed OFL-1.1
Similarity 68 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#9
Barlow Condensed OFL-1.1
Similarity 68 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#10
Saira Condensed OFL-1.1
Similarity 68 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#11
Oswald OFL-1.1
Similarity 67 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#12
Alumni Sans OFL-1.1
Similarity 67 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
Fonts made for other scripts with similar Latin letters
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.