About Us
About Square Root Symbol
We built the clearest, most practical resource for the √ symbol — so you can copy it, type it on any device, and understand what it actually means.
Our mission: Give every person — student, writer, developer, or curious mind — the exact information they need about the square root symbol in one place, without fluff, ads, or guesswork.
What We Cover
Everything About √ in One Place
Copy & Paste
One-click copy of √, ∛, and ∜ that works on every device, browser, and operating system instantly.
Keyboard Shortcuts
Step-by-step guides for Mac (Option+V), Windows (Alt+251), Chromebook (Ctrl+Shift+U) and Microsoft Word (221A + Alt+X).
Meaning & History
What a square root is, why √ is always positive, who invented the symbol in 1525, and what radicand means.
Mathematical Concepts
Principal roots, imaginary numbers, perfect squares, and the difference between √ and ±√ clearly explained.
Symbol Anatomy
The radical sign, radicand, vinculum, and index — every part of √ explained with plain-language definitions.
Unicode Reference
Unicode code points for √ (U+221A), ∛ (U+221B), and ∜ (U+221C), with encoding details for developers.
Why Trust Us
Accurate, Current & Independent
Fact-checked
Every shortcut, code point, and historical claim is verified against primary sources before publication.
Kept current
Guides are reviewed and updated whenever operating systems, browsers, or platforms change their behaviour.
No ads or affiliates
We are not paid to recommend anything. Every method described is chosen purely because it works.
Written by humans
All content is written and reviewed by people who have tested every step on real devices.
Our Team
The People Behind the Site
Mateo
Lead Reviewer & Editor
Mateo reviews every guide on squarerootsymbol.org before it goes live. With a background in technical writing and a passion for making complex symbols accessible to everyone, he tests each keyboard shortcut on real hardware and verifies every mathematical claim against authoritative sources. His goal: if you land on this site, you leave with exactly what you needed.
squarerootsymbol.org
The complete reference for the square root symbol — copy it, type it on any device, and understand it fully.