The pi sign, for circles, constants, maths input and anything measured in radians. Boxed in a square, in stroke, two-tone, duotone and fill, free under MIT.
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<path d="M3 6C3 4.3431 4.3431 3 6 3L18 3C19.6569 3 21 4.3431 21 6L21 18C21 19.6569 19.6569 21 18 21L6 21C4.3431 21 3 19.6569 3 18ZM7 8.5L17 8.5M10 8.5L10 15.5M14 8.5L14 14C14 14.8285 14.6716 15.5 15.5 15.5" fill="none"/>
</svg>Also called
What someone searching for this drawing would have typed instead. These are the words the browser's search matches on.
- constant
- circle
- radians
- math
- greek
- 3.14
Containers
The same drawing boxed differently. Each is its own icon, with its own name.
Related icons
The rest of the pi family first, then the Math shelf.
FAQ
Answered from square-pi's own facts: its shelf, the weights it was drawn in, its siblings and its dates.
- What is the square-pi icon for?
- The pi sign, for circles, constants, maths input and anything measured in radians. It is filed under Math in Keyline Icons, drawn on the same 24×24 grid as the rest of the set. People look for it as constant, circle, radians, math, greek and 3.14, and the browser's search matches all of those.
- What styles does the square-pi icon come in?
- All four: stroke, two-tone, duotone and fill. They are drawn from the same geometry, so swapping style never moves anything.
- How is square-pi different from pi?
- square-pi is the same drawing inside a square. The bare glyph is pi, and it is also boxed as circle-pi.
- What other icons go with square-pi?
- angle, asterisk, brace-left, brace-right, braces and braces-ellipsis, and 12 more, all shown below. They are the Math shelf: nothing else in the set is named after pi.
- How do I import square-pi in React?
- <SquarePi /> is the component, and the weight decides the module: stroke from "@keyline-icons/react", two-tone from "@keyline-icons/react/two-tone", duotone from "@keyline-icons/react/duotone" and fill from "@keyline-icons/react/fill". It takes the usual SVG props plus a size, so <SquarePi size={16} /> and className="size-4" both work, and there is no provider or theme to set up.
- Where is the square-pi SVG?
- icons/stroke/square-pi.svg, icons/two-tone/square-pi.svg, icons/duotone/square-pi.svg and icons/fill/square-pi.svg in the repository, normalised: no wrapper, no ids and no classes to strip out. The tabs above hand you the same drawing as SVG or JSX without the download, and neither needs an install.
- When was square-pi added to the set?
- Added 20 Oct 2026. It ships in v2.1.0, so an install at that version or later has it.
Questions about the set rather than about this drawing are answered where they belong. The home page covers what the set is, how the three styles differ, why some icons come boxed and where the Figma file is; installing the set in a shadcn/ui project covers the React package, the CLI and using an icon without React. The MIT licence is stated in the footer of every page.