---
title: "Sigma Icon | Free Download PNG & SVG | Sharp Duo"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/sigma--25155
canonical_url: "https://www.streamlinehq.com/icons/download/sigma--25155"
summary: "Sharp duotone icon of an angular sigma symbol. Used for summation, mathematics, and data aggregation."
---

# Sigma icon

The Sigma icon shows an angular, open-centered Greek sigma formed by bold geometric strokes. Drawn in the duotone style on a 24px grid with a 2px stroke so its sharp form stays clear at small sizes. Use it for summation controls, mathematical notation, formulas, data aggregation, and analytics interfaces. It belongs to Sharp Duo set in the Sharp family.

## Preview

![Sharp duotone icon of an angular sigma symbol. Used for summation, mathematics, and data aggregation.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/text-formatting/sigma-us7zwvry3ml123gqvsa870p.png/sigma-3auagze5crzh4sigq3aer6.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Sigma
- **Type**: Icon
- **Set**: [Sharp Duo](/icons/sharp-duo-style.md) — Sharp cuts the chase with its bold and geometric look. It follows strict construction guidelines to convey a high-tech feel. The Duo style is perfect for projects that require differentiation between actions, using color to convey meaning effectively. It also allows you to customize the line thickness. All Sharp Duo icons are designed on a 24px grid with a 2px default stroke and two customizable colors.
- **Family**: [Sharp](/icons/sharp-sets.md) — Brutalist icons
- **Style**: Duo, Stroke, Filled, Geometric
- **Category**: Interface Essential › Text Formatting
- **Default size**: 24px
- **Stroke width**: 2px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: sigma, summation, summation_symbol, math, formula, calculation, algebra, arithmetic, vector, geometry, formatting, format, text, arrow

## Download

- [Download Sigma on Streamline](https://www.streamlinehq.com/icons/download/sigma--25155)

## Also available in other styles

- [Sigma — Sharp Solid](/icons/download/sigma--25323.md) (Pro)
- [Sigma — Sharp Remix](/icons/download/sigma--28731.md) (Pro)
- [Sigma — Sharp Gradient](/icons/download/sigma--28008.md) (Pro)
- [Sigma — Sharp Flat](/icons/download/sigma--25487.md) (Pro)
- [Sigma — Sharp Pop](/icons/download/sigma--31671.md) (Pro)
- [Sigma — Sharp Neon](/icons/download/sigma--30716.md) (Pro)
- [Sigma — Sharp Line](/icons/download/sigma--24979.md) (Pro)

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