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

Fluent UI

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 neon icon of a rounded square outline. Used for containers, buttons, frames, and interface controls.

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

Rounded colored solid icon of a green square in a dark blue frame. Used for buttons; app tiles & color selectors.

Rounded gradient icon of a rounded square filled with a pink-to-orange gradient. Used for app tiles, buttons, and backgrounds.

Rounded hybrid solid and line icon of a thick outlined square with rounded corners. Used for UI containers and buttons.

Sharp flat icon of a solid square. Used for shapes, color swatches, and layout controls.

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.

Rounded solid icon of a filled square with curved corners. Used for buttons, tiles, app icons, and shape tools.

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.

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

Sharp solid icon of a filled square. Used for shapes, color swatches, tiles, and geometric UI elements.

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.

Sharp line icon of a square outline. Used for shapes, borders, frames, and interface controls.

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.

Rounded line icon of a square with softly curved corners. Used for containers, buttons, tiles, and app layouts.

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.

Rounded flat icon of a solid square with softly curved corners. Used for tiles, buttons, app icons, and backgrounds.

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.

Sharp gradient icon of a solid square in pink-to-orange. Used for color swatches, backgrounds.

Sharp colored solid icon of a green square inside a dark blue square. Used for shapes, layouts, and color controls.

Sharp hybrid solid and line icon of a square with a thick border and white center. Used for shape tools, buttons, and UI panels.

Sharp neon icon of a hollow square outline. Used for containers, shapes, selection tools, and layout controls.

Sharp duotone icon of a square outline with a pale inner fill. Used for containers, tiles, buttons, and layout controls.

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

Sharp neon icon of an outlined square with a horizontal line extending right. Used for starts, connectors, and flow diagrams.

Line Start Square

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

Square Shape

Sharp duotone icon of two square bracket marks facing inward. Used for code, syntax, and text selection.

Square Brackets

Sharp line icon of two square bracket shapes facing inward. Used for code, syntax, and text editing.

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

Sharp solid icon of a black square with a white horizontal rectangle cutout. Used for subtract controls and shape editing.

Subtract Square

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

Clean duotone icon of a square root symbol and an X. Used for math tools, equations, algebra, and STEM education.

The Square Root X icon shows a sweeping radical symbol beside a large X. Drawn in the duotone style on a 14px grid with a 1px stroke for smooth, fluid curves and clear small-scale rendering. Use it for math tools, equation editors, algebra lessons, calculators, and STEM education interfaces. It belongs to Flex Duo 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 Duo style is perfect for projects that require differentiation between actions, using color to convey meaning effectively. It also allows you to customize the line thickness.&nbsp;All Flex Duo icons are designed on a 14px grid with a 1px default stroke and two customizable colors.</p>

Flex Duo

<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 duo-style Icon from Flex Duo set.