Inter
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PreviewInter
by Rasmus Andersson
Similarity (subjective)78%
Inter shares Helvetica's neutrality and structured geometry but has a taller x-height and slightly more humanist forms, optimized for screens.
Linotype / Monotype
Free Helvetica alternatives
Free Helvetica alternatives exist because the original face is licensed, not because the letterforms are rare. Helvetica is a neo-grotesque: closed apertures, horizontal terminals, and a cool neutrality that still reads as corporate after seventy years. If you need that tone on the web without a Monotype contract, you pick an open grotesque and accept the differences.
The four substitutes below are not clones. Inter is taller and more screen-tuned. Roboto is friendlier at the terminals. Work Sans keeps the grotesque skeleton with a larger x-height. Source Sans 3 leans humanist. Rank them by the job, not by a single similarity number.
sans-serif
Roboto
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PreviewRoboto
by Christian Robertson
Similarity (subjective)65%
Roboto has a similar skeleton but introduces friendly double-storey a and curved terminals. Less rigid than Helvetica but a versatile open substitute.
Work Sans
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PreviewWork Sans
by Wei Huang
Similarity (subjective)70%
Work Sans is a grotesque with Helvetica-like neutrality and a generous x-height, well-suited to UI body text.
Source Sans 3
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PreviewSource Sans 3
by Paul D. Hunt
Similarity (subjective)60%
Source Sans 3 is more humanist than Helvetica but provides a similar neutral, professional feel for UI and documentation.
What Helvetica actually looks like
The two-storey a is upright and slightly narrow. The G has a spur. The R has a straight, slightly kicked leg. Counters in a, e, and o sit tight. Stroke contrast is low. That tightness is why Helvetica feels dense at 16px on a laptop and why many UI teams prefer Inter once they see the same copy side by side.
If your brand already uses Helvetica Neue on print, do not expect Inter Regular to drop in at the same point size. Raise Inter by about 1px or drop the tracking a hair so the color of the paragraph matches.
When a Helvetica substitute is the honest choice
Switch when the site must self-host, when legal wants an OFL or SIL license, or when you need a variable file instead of nine static weights. Stay with a paid Helvetica license when the identity is already locked to Neue Haas Grotesk and the legal team will not reopen it.
For product UI, start with Inter. For Android-adjacent products that already ship Roboto in the OS, stay on Roboto so the web and the device agree. For documentation that should feel like Adobe's Source family, use Source Sans 3.
How to pick among these four
Screen Density
Inter's tall x-height holds 14px UI labels. Helvetica's lower x-height needs more pixels to feel as large. If the mock is a dashboard, Inter is the default.
Voice
Roboto's curved terminals read as Google-era friendly. Work Sans stays closer to a poster grotesque. Source Sans 3 reads as editorial-technical, closer to news UI than to a bank logo.
Weights You Will Actually Ship
Inter and Source Sans 3 cover Thin through Black as variable fonts. Work Sans does too. Confirm 500 and 600 exist before you promise a five-step type scale.
Pairing the Substitute
Inter pairs with Source Serif 4 and Merriweather. Roboto pairs with Oswald. Work Sans pairs with Rubik. Preview those on the pairing pages rather than guessing.
Where to test the swap
Load Inter or Work Sans in the type tester, paste a real paragraph from your product, and set the size to 16px. Then open a pairing that uses that font so you can see headings against body, not a pangram on a white card.
FAQ
- Is Inter a free Helvetica alternative?
- It is the closest open option for UI, not a drop-in clone. Inter has a taller x-height, more open apertures, and a slant axis. Use it when you want Helvetica's neutrality on screens, not when a brand guideline names Helvetica Neue by file.
- Can I use Arial instead?
- Arial ships with Windows and is metrically compatible with Helvetica in many office documents. It is not open source in the same way as Inter, and the italic is a slanted roman. For a public website that self-hosts, pick Inter or Work Sans.
- Which substitute works at 12px?
- Inter. The tall x-height and open counters keep 12px labels readable. Helvetica itself often needs 13px or 14px to match that color.
Other Commercial Faces We Cover
Helvetica is one of six paid families with open substitutes in this library. The rest are listed below if your brief named a different default.
- Free Avenir alternatives4 open-source substitutes
- Free Gotham alternatives3 open-source substitutes
- Free Proxima Nova alternatives4 open-source substitutes
- Free Futura alternatives3 open-source substitutes
- Free Garamond alternatives3 open-source substitutes
Subjective similarity
Similarity scores reflect one Font Blend designer's read. They are not a measured metric and should not be quoted as fact.