---
title: "Square Sigma Icon | Free Download PNG & SVG | Lucide Line"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/square-sigma--29182
canonical_url: "https://www.streamlinehq.com/icons/download/square-sigma--29182"
summary: "Clean line icon of a sigma symbol inside a rounded square. Used for math tools, formulas, and symbols."
---

# Square Sigma icon

The Square Sigma icon shows a sigma symbol enclosed by a rounded square border. Drawn in the line style on a 24px grid with a 2px stroke for clear, airy UI presentation. Use it for mathematics tools, formula editors, summation controls, scientific interfaces, and symbol libraries. It belongs to Lucide Line free set in the Lucide family.

## Preview

![Clean line icon of a sigma symbol inside a rounded square. Used for math tools, formulas, and symbols.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/all-icons/square-sigma-4e4c8.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Square Sigma
- **Type**: Icon
- **Set**: [Lucide Line](/icons/lucide-line.md) — Lucide is a free and open source icon set created by Eric Fennis and team with modern design.
- **Family**: [Lucide](/icons/lucide.md)
- **Style**: Line, Stroke, Minimal
- **Category**: All Icons › All Icons
- **Default size**: 24px
- **Stroke width**: 2px
- **Pricing**: Free
- **License**: [ISC](https://lucide.dev/license)
- **Author**: [Lucide](https://lucide.dev/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: sigma, summation, greek, math, mathematics, symbol, operator, notation, algebra, square

## Download

- [Download Square Sigma on Streamline](https://www.streamlinehq.com/icons/download/square-sigma--29182)

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