── WHAT IS THE CHECK MARK?────────────────────────────────────────────────
The check mark ✓ (U+2713) descends from the proofreader's tick and lives in Unicode's Dingbats block, digitized from the classic Zapf Dingbats font. Its heavier sibling ✔ (U+2714) is the same mark with more ink; ☑ (U+2611) puts it in a ballot box, and ✗ / ✘ are its rejection counterparts.
One cultural footnote: the tick does not mean "correct" everywhere. Japanese grading uses a circle ○ (maru) for correct answers, while a check can flag something to review — worth knowing before you decorate an international spreadsheet.
── HOW TO TYPE IT────────────────────────────────────────────────────────────
▸ Windows
No classic Alt code exists for ✓ — Alt+251 gives the lookalike √ (square root). For the real thing use the emoji picker (Win+.) and search "check", or Character Map.
▸ macOS / iOS
Press Ctrl+Cmd+Space and search "check mark", or add a text replacement like ;ok → ✓.
▸ HTML / CSS
Use ✓ or ✓ for ✓, ✔ for ✔. In CSS content: "\2713".
── WHERE IT WORKS────────────────────────────────────────────────────────────
✓ (U+2713) is the light check mark, ✔ (U+2714) the heavy one — both plain text characters that inherit your font color. ✅ (U+2705) is a full emoji that always renders as a white check on a green box and ignores text styling.
[+] Is there an Alt code for the check mark?
Not in the classic set. Alt+251 produces √ (SQUARE ROOT, U+221A) — visually close and widely used as a stand-in, but a math operator. For a true ✓ use Win+. (emoji picker), Character Map, or copy it from this page.
[+] Why does ✔ show up green-boxed in some chats?
Some platforms apply emoji presentation to U+2714 automatically. Appending the text variation selector U+FE0E requests the plain glyph; the light ✓ (U+2713) is rarely emojified and is the safer pick for plain text.
[+] Is ✓ ASCII?
No — ASCII has no check mark at all, which is why √ and x became keyboard-era substitutes. ✓ arrived with the Zapf Dingbats digitization in Unicode 1.1.
── RELATED SYMBOLS────────────────────────────────────────────────────────