Square Root Radical black filled icon
Outline square root radical sign with a long horizontal overbar
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About the Square Root Radical black filled icon
The mathematical radical sign: a short entry stroke, a sharp V descending to a point, then a steep rise into a long horizontal vinculum that extends to the right, ready to cover a number or expression. Use it in calculator interfaces, math education apps, formula editors, engineering and CAD tools, exam or tutoring materials and STEM presentation slides.
Strokes are uniform in weight and the overbar runs flat and long, so the sign still reads when a value is typeset beneath it. It pairs with plus, minus, sigma and percent operators in a math set. Align it to the same baseline as adjacent digits.
This is the solid black filled version of the square root radical icon: a bold silhouette that reads clearly at 16-24 px and on dark or busy backgrounds, and prints well in one colour.
It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
