Fonts like Roboto Flex
12 open fonts whose letters are closest to Roboto Flex, ranked by a glyph comparison. All free for commercial use.
Quick answer
The closest open font to Roboto Flex is Heebo (similarity 97), then Yantramanav and Pretendard. Heebo 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 sideHeeboOFL-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
YantramanavOFL-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
PretendardOFL-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
Heebo OFL-1.1
Similarity 97 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#2
Yantramanav OFL-1.1
Similarity 92 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#3
Pretendard OFL-1.1
Similarity 89 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#4
Inter Tight OFL-1.1
Similarity 89 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#5
Miranda Sans OFL-1.1
Similarity 88 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#6
Spline Sans OFL-1.1
Similarity 87 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#7
Funnel Sans OFL-1.1
Similarity 87 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#8
Public Sans OFL-1.1
Similarity 85 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#9
Overpass OFL-1.1
Similarity 85 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#10
Adwaita Sans OFL-1.1
Similarity 85 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#11
Special Gothic OFL-1.1
Similarity 85 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
#12
Gothic A1 OFL-1.1
Similarity 84 — 100 = identical letters, 0 = an average pair
Sphinx of black quartz, judge my vow
Fonts made for other scripts with similar Latin letters
Family variants
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.