β
Beta in Mathematics
In Mathematics, the Beta symbol (β) is commonly used. Learn how to copy and use it in your technical documents.
Unicode
U+03B2
HTML Entity
β
LaTeX Sequence
\beta
Primary Field
MathematicsMathematics Application
Beta labels angles (often the second angle after α), beta particles and beta decay in nuclear physics, the beta coefficient that measures an asset’s volatility in finance and the slope in regression, and the Type II error rate in statistics.
How to type Beta (β)
- Fastest: click β on the keyboard above — it copies to your clipboard, ready to paste into Word, Google Docs, email or a forum.
- Unicode: the code point is shown in the panel above; on Windows you can also use Alt‑X after the hex code in Word.
- LaTeX: use the command shown above inside math mode.
- Anywhere: because it’s standard Unicode, it keeps its exact form across apps and devices.
Frequently asked questions
What is β in finance?
Beta measures how much a stock moves relative to the market; a beta above 1 is more volatile than the market.
What is beta decay?
A radioactive process in which a beta particle (an electron or positron) is emitted from an atomic nucleus.
Write mathematical and scientific expressions
Need to pair this symbol with other operators?