---
title: "Sigma Icon | Free Download PNG & SVG | Core Line"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/sigma--23567
canonical_url: "https://www.streamlinehq.com/icons/download/sigma--23567"
summary: "Clean line icon of a Greek capital sigma formed by three connected strokes. Used for math, summation, formulas, and education"
---

# Sigma icon

The Sigma icon shows a Greek capital sigma formed by three connected strokes. Drawn in the line style on a 14px grid with a 1px stroke, it stays clear at small sizes. Use it for mathematical notation, summation functions, formulas, education, and data analysis interfaces. It belongs to Core Line set in the Core family.

## Preview

![Clean line icon of a Greek capital sigma formed by three connected strokes. Used for math, summation, formulas, and education](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/text-formatting/sigma-9ljoh808hjaodqiim229i.png/sigma-sgz99opl2imx66xjumyuq.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Sigma
- **Type**: Icon
- **Set**: [Core Line](/icons/core-line.md) — Core is the Helvetica of icons. Each icon is stripped to its essential form and has generous inner spacing. The Line variant offers a clean, minimalist approach with consistent line weights.
- **Family**: [Core](/icons/core-sets.md) — Minimal icons
- **Style**: Line, Minimal, Stroke, Wireframe
- **Category**: Interface Essential › Text Formatting
- **Default size**: 14px
- **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, summation, greek, math, symbol, operator, uppercase, algebra, calculus, notation

## Download

- [Download Sigma on Streamline](https://www.streamlinehq.com/icons/download/sigma--23567)

## Also available in other styles

- [Sigma — Core Remix](/icons/download/sigma--28915.md) (Pro)
- [Sigma — Core Solid](/icons/download/sigma--23707.md) (Pro)
- [Sigma — Core Neon](/icons/download/sigma--30586.md) (Pro)
- [Sigma — Core Gradient](/icons/download/sigma--28293.md) (Pro)
- [Sigma — Core Flat](/icons/download/sigma--23958.md) (Pro)
- [Sigma — Core Duo](/icons/download/sigma--24040.md) (Pro)
- [Sigma — Core Pop](/icons/download/sigma--31486.md) (Pro)

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