---
title: "Sigma Icon | Free Download PNG & SVG | Micro Line"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/sigma--26416
canonical_url: "https://www.streamlinehq.com/icons/download/sigma--26416"
summary: "Minimal line icon of a Greek sigma formed by top and bottom bars joined by a central zigzag. Used for math, formulas, and symbols."
---

# Sigma icon

The Sigma icon shows a Greek sigma formed by top and bottom horizontal bars joined by a central zigzag. Drawn in the line style on a 10px grid with a 1px stroke so it stays crisp at small sizes. Use it for mathematical notation, formulas, summation controls, and symbol libraries. It belongs to Micro Line set in the Micro family.

## Preview

![Minimal line icon of a Greek sigma formed by top and bottom bars joined by a central zigzag. Used for math, formulas, and symbols.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/text-formatting/sigma-qg5wg0cc0baxvwj2hoxcx.png/sigma-6rdi1ndfqp7pdzpwdizx3g.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Sigma
- **Type**: Icon
- **Set**: [Micro Line](/icons/micro-line.md) — Micro is built on a tiny 10px grid, perfect for interfaces. The Line variant offers minimal, clean strokes for small icon sizes.
- **Family**: [Micro](/icons/micro.md) — Designed for interfaces
- **Style**: Line, Minimal, Stroke, Geometric, Wireframe
- **Category**: Interface Essential › Text Formatting
- **Default size**: 10px
- **Stroke width**: 1px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: sigma, math, notation, symbol, calculate, greek, alphabet, shapes, line, formatting, text, arrow, font, bold, italic, underline

## Download

- [Download Sigma on Streamline](https://www.streamlinehq.com/icons/download/sigma--26416)

## Also available in other styles

- [Sigma — Micro Solid](/icons/download/sigma--26563.md) (Pro)

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