---
title: "Sigma Icon | Free Download PNG & SVG | Phosphor Regular"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/sigma--28929
canonical_url: "https://www.streamlinehq.com/icons/download/sigma--28929"
summary: "Clean line icon of an angular sigma symbol with top and bottom bars. Used for math, summation, and formulas."
---

# Sigma icon

The Sigma icon shows a bold angular sigma symbol formed by diagonal strokes joining top and bottom bars. Drawn in the line style on a 16px grid for a clear, compact appearance. Use it for mathematical notation, summation controls, formulas, statistics, and data tools. It belongs to Phosphor Regular free set in the Phosphor family.

## Preview

![Clean line icon of an angular sigma symbol with top and bottom bars. Used for math, summation, and formulas.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/phosphor-regular/sigma-ztonl97dnffwdc5lgj9uc.png/sigma-4zo4rics2131i76hsj9r6pk.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Sigma
- **Type**: Icon
- **Set**: [Phosphor Regular](/icons/phosphor-regular.md) — Phosphor is a free and open source icon set created by Helena Zhang and Tobias Fried.
- **Family**: [Phosphor](/icons/phosphor.md)
- **Style**: Line, Outlined, Minimal
- **Category**: All Icons › Vector Icons
- **Default size**: 16px
- **Pricing**: Free
- **License**: [MIT](https://raw.githubusercontent.com/phosphor-icons/homepage/master/LICENSE)
- **Author**: [Phosphor](https://phosphoricons.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: sigma, sum, summation, symbol, greek, math, notation, algebra, calculus, mathematics

## Download

- [Download Sigma on Streamline](https://www.streamlinehq.com/icons/download/sigma--28929)

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