# What corner radius do modern products use for primary buttons?

Source: Lazyweb Research
Published: 2026-07-07
Sample size: n=514
Tags: design, ux-patterns, checkout, signup, saas
HTML: https://www.lazyweb.com/research/what-button-corner-radius-is-standard
Markdown: https://www.lazyweb.com/research/what-button-corner-radius-is-standard.md

**Answer.** 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.

## 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.

## Related questions

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