Varepsilon in LaTeX

The LaTeX command for varepsilon (ε) is \varepsilon (variant epsilon).

\varepsilon

Greek Lowercase · Unicode ε (U+03B5) · no package needed

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Which command should you use?

Command	Package	Use it when
`\varepsilon` recommended	none	Curly epsilon, as in epsilon-delta proofs.
`\epsilon`	none	Lunate epsilon.
`\upvarepsilon`	`upgreek`	Upright curly epsilon, for constants such as permittivity.
`\in`	none	Set membership, often mistaken for an epsilon.

Table 1. Ways to write varepsilon in LaTeX. Every line was compiled with pdfLaTeX (TeX Live 2026) loading only the package shown.

Common mistake. Pick one form: a document that mixes \epsilon and \varepsilon reads as if it used two different variables.

How to type Varepsilon

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

Example

$\forall \varepsilon > 0, \exists \delta > 0$

\forall \varepsilon > 0, \exists \delta > 0

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Often confused with

Epsilon \epsilon (ϵ)
In \in (∈): element of

Related Greek Lowercase symbols

\psi\omega\alpha\beta\gamma\delta\epsilon\zeta\eta\theta\vartheta\iota\kappa\varkappa

Lowercase Greek letters in LaTeX: the full table or search all 350+ LaTeX symbols.

FAQ

How do you write varepsilon (ε) in LaTeX?

Use \varepsilon in math mode; it needs no extra package. For example, $\forall \varepsilon > 0, \exists \delta > 0$.

Which package provides \varepsilon?

None: \varepsilon is built into LaTeX, so no extra package is required.

What is the most common mistake with varepsilon in LaTeX?

Pick one form: a document that mixes \epsilon and \varepsilon reads as if it used two different variables.