τ
Tau Symbol (τ)
Copy the Tau symbol τ to your clipboard, and see its Unicode code point, HTML entity, LaTeX command and how to type it on any device.
What does τ mean?
τ is the lowercase form of Tau, letter 19 of 24 in the Greek alphabet (pronounced TAW). Its capital counterpart is Τ. In science and maths it is used for: Torque, time constant, shear stress.
Codes and properties
| Character | τ |
|---|---|
| Unicode name | GREEK SMALL LETTER TAU |
| Code point | U+03C4 |
| Decimal | 964 |
| Unicode block | Greek and Coptic |
| HTML entity | τ · τ · τ |
| CSS | \03C4 |
| JavaScript / JSON | \u03C4 |
| Python | \u03C4 or \N{GREEK SMALL LETTER TAU} |
| UTF-8 bytes | CF 84 |
| LaTeX | \tau |
How to type τ
- Copy & paste: press the Copy button above, then paste τ anywhere — Word, Google Docs, email, chat or code.
- Windows (Word, WordPad, Outlook): type
03C4then press Alt+X. In any app, Win+. opens the symbol panel. - Mac: switch to the Unicode Hex Input keyboard, hold Option and type
03C4; or press Ctrl+Cmd+Space and search “greek small letter tau”. - Linux (GTK/IBus): press Ctrl+Shift+U, type
03c4, then Space. - HTML:
τrenders as τ. - LaTeX:
\tauin math mode (amssymb package for some symbols).
Frequently asked questions
How do I type τ on Windows?
In Microsoft Word type 03C4 and press Alt+X. In any app press Win+. to open the symbol panel, or copy τ from this page.
What is the HTML code for τ?
Use τ or τ (hex) or τ (decimal).
What is the LaTeX command for τ?
Use \tau in math mode.