---
title: "Sigma Icon | Free Download PNG & SVG | Core Flat"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/sigma--23958
canonical_url: "https://www.streamlinehq.com/icons/download/sigma--23958"
summary: "Clean flat icon of a rounded Greek sigma shape with top and bottom bars. Used for math, summation, and formulas."
---

# Sigma icon

The Sigma icon shows a bold Greek sigma formed by horizontal top and bottom bars joined by angled segments. Drawn in the flat style on a 14px grid for clear, illustrative geometry. Use it for summation tools, mathematical formulas, statistics, and educational interfaces. It belongs to Core Flat set in the Core family.

## Preview

![Clean flat icon of a rounded Greek sigma shape 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/text-formatting/sigma-4dh4sdavw2lhme65pajl6g.png/sigma-pob2ni4u6ulueume0v26fp.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Sigma
- **Type**: Icon
- **Set**: [Core Flat](/icons/core-flat.md) — Core is timeless, like the Helvetica font or The Beatles. With its minimalist design and neutrality, it can adapt to any layout. The Flat style is easy to integrate into projects that need icons with a more illustrative purpose, working best at larger sizes. All Core Flat icons are designed on a 14px grid with two customizable colors.
- **Family**: [Core](/icons/core-sets.md) — Minimal icons
- **Style**: Flat, Minimal, Wireframe
- **Category**: Interface Essential › Text Formatting
- **Default size**: 14px
- **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, math, greek, symbol, operator, glyph, blue, rounded, algebra

## Download

- [Download Sigma on Streamline](https://www.streamlinehq.com/icons/download/sigma--23958)

## Also available in other styles

- [Sigma — Core Remix](/icons/download/sigma--28915.md) (Pro)
- [Sigma — Core Line](/icons/download/sigma--23567.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 Duo](/icons/download/sigma--24040.md) (Pro)
- [Sigma — Core Pop](/icons/download/sigma--31486.md) (Pro)

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