The pi sign, for circles, constants, maths input and anything measured in radians. On a 24×24 grid 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="M2 5L22 5M8 5L8 19M16 5L16 16C16 17.6569 17.3431 19 19 19" 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 pi's own facts: its shelf, the weights it was drawn in, its siblings and its dates.
- What is the 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 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.
- Is there a square or circle version of pi?
- Yes. The same drawing is also boxed, as square-pi and circle-pi. Each is its own icon with its own name.
- What other icons go with 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 pi in React?
- <Pi /> 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 <Pi size={16} /> and className="size-4" both work, and there is no provider or theme to set up.
- Where is the pi SVG?
- icons/stroke/pi.svg, icons/two-tone/pi.svg, icons/duotone/pi.svg and icons/fill/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 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.