Sigma

The sigma icon represents summation and aggregation functions in mathematical and data analysis applications. Featuring the Greek letter sigma (Σ) used in mathematics to denote summation operations, this symbol indicates total calculations, aggregate functions, and the mathematical operations that sum values, compute totals, and perform cumulative calculations in spreadsheets and analytics tools.

In spreadsheet applications like Google Sheets and Excel, users encounter this icon when inserting sum functions and aggregate calculations. Data analytics platforms display it for summation operations, while business intelligence tools like Tableau use it to represent aggregated metrics, total calculations, and the cumulative measures that summarize large datasets into single values.

The sigma symbol communicates more than simple addition - it specifically represents mathematical summation notation, aggregate operations across datasets, and the formal mathematical language of cumulative calculations. This mathematical iconography bridges casual spreadsheet use with formal statistical analysis and data science operations.

Sigma is one of 1,655 icons in Lucide, made by Lucide Contributors and released under ISC. It is drawn on a 24 × 24 grid with a 2 stroke.

Sign in (it's free), then open Get icon, Install with shadcn CLI, and pick your package manager to copy the command. It adds SigmaIcon to components/icons/lucide-sigma.tsx: one file, a size prop (24 by default) and every SVG prop, with no icon package.

Copy it as React (from Get icon, or the Code section): a typed SigmaIcon component you paste into your project, with no package to install. Only the icons you import reach your bundle. It works in Next.js and any React app.

Yes, if your project has lucide-react: Sigma is `SigmaIcon` there, used as <SigmaIcon />. The shadcn.io MCP server answers with that import when it finds the package. Without it, copy the icon from here.

Open Get icon, then Copy as code, and pick Vue, Svelte, Angular, Solid or Preact; the Code section shows each one too. Every version is one self-contained component with the SVG inside, and SVG and data URL copies are there for plain HTML and CSS.

With Pro, the shadcn.io MCP server lets Claude Code, Cursor or any MCP client find the Sigma icon, or any of 1,655 Lucide icons, and install it from a prompt.

It's drawn in currentColor, so it takes the text color wherever you use it: a class like text-primary recolors it. To bake a color in, set one in Customize before you copy.

Set width and height on the component, or a class like size-6. It's drawn on a 24 × 24 grid, so it stays sharp at any size. Customize also sets the size it exports at, its padding and rotation, and its stroke.

Sigma is a line icon drawn with a stroke width of 2. Change it in Customize before you copy, or pass strokeWidth to the installed component when all of its strokes share one width.

Yes. It follows the text color, so with text-foreground (or any theme token) it changes with your light and dark themes. The icon is a vector, so it needs no separate dark asset.

Next to a visible label it's decoration: add aria-hidden="true" so screen readers skip it. Standing alone, as in an icon button, give the button a name instead, like aria-label="Sigma", so screen readers say what it does.

Yes. SigmaIcon passes every SVG prop to the svg element, so <SigmaIcon aria-hidden="true" /> works, and so do role="img" with aria-label, or a title child, when it carries meaning on its own.

Yes. Open Get icon, then Download file: SVG for code or design tools like Figma; PNG, WebP or JPEG at 512px; or an ICO favicon with 16, 32 and 48px inside. Each one uses what you set in Customize.

Yes. ISC allows commercial use; keep the license notice when you ship the icons' source files. The full terms are in the license, linked on this page.

No visible credit is required: ISC only asks that you keep the license notice if you ship the icons' source files. Icons installed with the shadcn CLI already start with a comment naming Lucide, Lucide Contributors and the license.

Yes. Copying and downloading it is free, and the shadcn CLI install only needs a free account.

8 other libraries draw an icon called Sigma. The Other libraries section on this page shows each one, so you can compare them and open the one that fits your style.

Its tags are math, statistics and calculation. Each tag page lists the icons that carry it from every library, which is the quickest way to find a match for Sigma in another set.