Interface Essential

Business

Images Photography

Money Shopping

Programming

Computer Devices

Phone

Mail

Map Travel

Food Drink

Nature Ecology

Entertainment

Shipping

Culture

Health

Work Education

Artificial Intelligence

Arrows

Streamline 3.0

Ultimate

Core

Flex

Sharp

Plump

Micro

Freehand

Streamline Material

Nova

Cyber

Streamline Vault

Logos

Pixel

Google Material

Tabler

Remix

Feather

Iconoir

Carbon

Solar

Lucide

Brand Logos

Bootstrap

Atlas

Unicons

Ionic Icons

Phosphor

MingCute

Font Awesome

Majesticons

Mynaui

Radix

Heroicons

Flagpack

Clean line icon of a rounded square outline. Used for shapes, buttons, and layout controls.

Square

Clean line icon of a square with rounded corners and a hollow center. Used for borders, panels, and selection controls.

Clean line icon of a thick square outline. Used for shape tools, borders, frames, and layout controls.

Clean line icon of a thick rounded square outline with a square opening. Used for shapes, buttons, frames, and layout controls.

Rounded line icon of a square with thick rounded corners. Used for buttons, shape tools, and interface controls.

Rounded gradient icon of a rounded square with softly curved corners. Used for app tiles, buttons, and UI containers.

Clean gradient icon of a rounded square. Used for app tiles, buttons, color swatches, and interface backgrounds.

Clean duotone icon of a rounded square with a thick border and inset center. Used for buttons, panels, and containers.

Rounded solid icon of a filled square with rounded corners. Used for buttons, tiles, app icons, and layout controls.

Minimal flat icon of a blue rounded square. Used for buttons, tiles, app backgrounds, and UI containers.

Clean creative, flat icon of a dark blue square overlapping a lighter offset square. Used for shapes, geometry, and blocks.

Clean hybrid solid and line icon of a rounded square frame with an open center. Used for buttons, app tiles, and containers.

Rounded flat icon of a rounded square. Used for buttons, tiles, and app interfaces.

Clean colored solid icon of a green square inside a blue rounded square. Used for tiles, buttons, icons, and color controls.

Rounded neon icon of a rounded square outline. Used for buttons, containers, app tiles, and interface panels.

Clean line icon of a rounded square outline. Used for buttons, containers, and shape controls.

Rounded hybrid solid and line icon of a rounded square outline. Used for buttons and tiles.

Rounded line icon of a rounded square outline. Used for buttons, containers, and UI panels.

Rounded solid icon of a filled square with softly curved corners. Used for tiles, buttons, app grids, and shape controls.

Sharp line icon of a square outline. Used for shapes, selection controls, layouts, and interface panels.

Clean line icon of a square outline. Used for shape tools, selection controls, grids, and interface buttons.

Rounded colored solid icon of a coral square inside a dark blue rounded border. Used for buttons, tiles, and app interfaces.

Rounded duotone icon of a rounded square outline. Used for buttons, tiles, and UI containers.

Bold creative, flat icon of a black square with white facets in a green circle. Used for tiles, buttons, and playful UI.

Clean creative, flat icon of a layered square inside an orange circle. Used for grids and dashboards.

Clean neon icon of a rounded square outline. Used for UI frames, buttons, containers, and selection states.

Clean solid icon of a rounded-corner square. Used for panels, buttons, and containers.

Square Fill

Line Start Square

Rounded line icon of a square with rounded corners. Used for shapes, borders, frames, and UI controls.

Square Shape

Square Brackets

Sharp solid icon of a filled square. Used for shape tools, stop controls, and geometric UI elements.

Subtract Square

Sharp gradient icon of two square brackets with rounded outer corners. Used for code, syntax, and bracket controls.

Rounded colored solid icon of a square root symbol with an X. Used for algebra, equations, and math tools.

The Square Root X icon shows a dark blue square root symbol and X over a cyan rounded square. Drawn in the colored solid style on a 14px grid for bold, smooth clarity. Use it for algebra tools, equation editors, math education apps, and symbolic calculation interfaces. It belongs to Flex Pop set in the Flex family.

<p>Flex is all about the curves. Its smooth curves brings fluidity and dynamism to your designs with a modern appeal.&nbsp;The Pop style is useful for projects that need a colorful touch, helping to capture attention and strengthen brand recognition.&nbsp;All Flex Pop icons are designed on a 14px grid with a mix of outlined and filled shapes, including a wide color palette.</p>

Flex Pop

<p>Flex is a fluid icon family inspired by nature’s curves. It favors smooth, flowing forms. More organic than Core and subtler than the chunky Plump. Read about the <a href="https://blog.streamlinehq.com/flex/" rel="noopener noreferrer" target="_blank">design process</a>.</p>

Square Root X is a pop-style Icon from Flex Pop set.