Free alternatives to Gill Sans
Gill Sans (Monotype): Eric Gill's 1928 humanist sans serif for Monotype, derived from Edward Johnston's London Underground lettering, with classical Roman proportions, a distinctive eyeglass-shaped g, and a flared uppercase R. It has long been treated as an unofficial national typeface of Britain, used by the BBC, Penguin Books, and British Railways.
Gill Sans and the updated Gill Sans Nova are commercial Monotype families; copies bundled with macOS or Office are not licensed for webfont use or redistribution.
Cabin openly cites Edward Johnston and Eric Gill as influences, so it inherits the humanist proportions and rounded, friendly forms of Gill Sans. It adds modern touches like a taller x-height and slight rounding that make it steadier on screen.
Lato shares Gill Sans's humanist warmth and classical capital proportions while staying more uniform in stroke and spacing. It lacks the eccentric details, like Gill's g and R, which is either a loss of character or a gain in versatility.
Karla is a grotesque with humanist quirks and slightly irregular spacing that recalls Gill Sans's hand-drawn unevenness. It is narrower and more contemporary, better suited to interfaces than book covers.
Fira Sans provides the humanist skeleton and open apertures that make Gill Sans readable, in a much larger range of weights and widths. Its forms are more standardized, so it reads as neutral European rather than distinctly British.
PT Sans is a humanist sans with moderate contrast and open, legible forms in the same functional tradition as Gill Sans's text weights. It is plainer and more condensed, tuned for signage and small print.
Gill Sans is a trademark of its owner and is not distributed by DaFontFonts. This page recommends independent open-licence typefaces with a comparable feel; they are not copies and render with their own metrics and details.
Questions
Is Gill Sans free for commercial use?
No. Gill Sans is a commercial Monotype typeface. The copies that ship with macOS and some Microsoft products are licensed for those environments, not for web embedding or redistribution. Cabin and Lato are free humanist alternatives with commercial licenses.
What is the closest free alternative to Gill Sans?
Cabin is the closest in spirit and structure, since it was designed with Johnston and Gill's lettering as direct references. Lato is the safer pick for large corporate-style text systems.