CSS border-radius generator — 8-value preview (local)
Set per-corner horizontal and vertical radii, use squircle-style presets, preview on a card, and copy a compact border-radius declaration — generated only in your tab.
Frequently asked questions
No. Border-radius CSS is formatted in this tab with no server round-trip. Nothing is sent to LocalTools servers for processing.
CSS lets you set horizontal radii for each corner, then vertical radii after a slash: `border-radius: 48px 72px 48px 72px / 72px 48px 72px 48px`. Unequal X and Y per corner creates elliptical (squircle-like) curves.