What corner radius do modern products use for primary buttons?

Fully-rounded pill buttons are the single largest bucket: 32.3% of 514 audited design systems use a 40+px (pill/full-round) primary button, and another 27.0% sit in the 7-12px 'rounded' range ^[1]. Sharp 0px corners are nearly extinct at 2.9% ^[1]. Rounded-to-pill is the modern default.

32% of 514 audited design systems use pill-shaped (40+px) primary buttons; only 3% use sharp 0px corners, July 2026.

By Ali Abouelatta · Lazyweb Research · n=514 · Published 2026-07-07 · Updated July 2026

designux-patternscheckoutsignupsaas

Robinhood Account Setup screen — real in-market example tracked by Lazyweb Research — Real in-market screens from **Robinhood**, **Mimo**, **Vinyls**, **Google Home** — tracked by Lazyweb Research

Mimo Account Setup screen — real in-market example tracked by Lazyweb Research — Real in-market screens from **Robinhood**, **Mimo**, **Vinyls**, **Google Home** — tracked by Lazyweb Research

Share — The radius distribution

Share — The radius distribution
Item	Share
40+px (pill/full-round)	32.3%
7-12px (rounded)	27.0%
21-40px (large)	18.3%
1-6px (subtle)	10.9%
13-20px (very rounded)	8.6%
0px (sharp)	2.9%

The radius distribution

Primary button corner radius, bucketed by the minimum button radius per system ^[1].

Radius bucket	Systems	Share
40+px (pill/full-round)	166	32.3%
7-12px (rounded)	139	27.0%
21-40px (large)	94	18.3%
1-6px (subtle)	56	10.9%
13-20px (very rounded)	44	8.6%
0px (sharp)	15	2.9%

Round the two soft-corner extremes together — 40+px pill (32%) and 21-40px large (18%) — and half the corpus uses heavily rounded buttons ^[1].

How to apply it

Pick between two modern conventions: pill buttons (40+px) read as friendly, consumer and app-native; a moderate 7-12px radius reads as SaaS-professional and is the second-most-common choice ^[1]. Sharp 0px corners now signal 'dated' or a very specific brutalist/editorial intent and appear in only 3% of systems — use them deliberately, not by default ^[1].

Caveats

Radius uses the minimum value_px for button elements per system; 6 of 520 systems lack a button radius entry, giving the 514 denominator ^[1]. The '40+px' bucket is treated as full-round regardless of the exact stored value ^[1].

The numbers

Stat	Computed from
pill 40+ 32.3% (166), rounded 7-12 27.0% (139), sharp 0 2.9% (15) of 514	button_corner_radius

Methodology. Universe: 514 audited design systems specifying a primary button radius, within the 520-system corpus. Method: bucket the minimum button radius per system. July 2026 snapshot; radius values are LLM-extracted tokens and 40+px is treated as full-round.

Sources & citations

[1] Lazyweb Research analysis of 514 design systems (systems with a button radius), July 2026. Primary button corner radius bucketed by minimum button value_px per system; 514 of 520 systems specify one. ↩

Source: Lazyweb Research — proprietary analysis of real, in-market app screens. Cite as Lazyweb Research, 2026-07-07.