Phi in LaTeX

The LaTeX command for Phi (Φ) is \Phi.

\Phi

Greek Uppercase · Unicode Φ (U+03A6) · no package needed

How to type Phi

Write \Phi inside math mode — that is, between $…$ for inline math or in a \[ … \] / equation block for display math. It is part of core LaTeX math, so no extra package is required.

Example

$\Phi(x) = \Phi_0$

\Phi(x) = \Phi_0

Prefer to see it live? Paste it into the LaTeX preview and it renders as you type — no compiler, no signup.

Related Greek Uppercase symbols

\Gamma\Delta\Theta\Lambda\Xi\Pi\Sigma\Upsilon\Psi\Omega

Search all 380+ LaTeX symbols →

FAQ

How do you write Phi (Φ) in LaTeX?

Use \Phi in math mode — it needs no extra package. For example, $\Phi(x) = \Phi_0$.

Which package provides \Phi?

None — \Phi is built into LaTeX's math mode, so no extra package is required.

loading tool…