---
title: "Sigma Icon | Free Download PNG & SVG | Unicons Line"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/sigma--29581
canonical_url: "https://www.streamlinehq.com/icons/download/sigma--29581"
summary: "Clean line icon of a bold zigzag sigma with rounded horizontal ends. Used for math, summation, formulas, and statistics."
---

# Sigma icon

The Sigma icon shows a bold zigzag Greek sigma formed by two rounded horizontal bars joined by a diagonal stroke. Drawn in the line style on a 16px grid, it keeps the compact mathematical shape clear in interfaces. Use it for summation, equations, statistics, formulas, and math or science tools. It belongs to Unicons Line free set in the Unicons family.

## Preview

![Clean line icon of a bold zigzag sigma with rounded horizontal ends. Used for math, summation, formulas, and statistics.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/all-icons/sigma-7ewxg1kevpppxpgtp1byzf.png/sigma-i2bn07o60ywx7908krl9m.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Sigma
- **Type**: Icon
- **Set**: [Unicons Line](/icons/unicons-line.md) — Unicons is a free and open source icon set created by IconScout with customizable styles.
- **Family**: [Unicons](/icons/unicons.md)
- **Style**: Line, Outlined
- **Category**: All Icons › All Icons
- **Default size**: 16px
- **Pricing**: Free
- **License**: [IconScout Simple License](https://iconscout.com/licenses#simple_license)
- **Author**: [IconScout](https://iconscout.com/unicons)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: sigma, sum, mathematics, addition, Greek, total, algebra, calculus, symbol, operator

## Download

- [Download Sigma on Streamline](https://www.streamlinehq.com/icons/download/sigma--29581)

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