Table shows small and big greek letters with their example usage in various kind of science such as mathematics, physics or chemistry. Additionally, it shows how to get a given greek letter in the HTML code (so-called HTML entities), TeX and TeX based formats such as LaTeX, KaTeX, MathJax etc. or in the UNICODE system.

Small letter | Capital letter | Name | Example usage | HTML entity | $\TeX$ format | Unicode (hex) |

$\alpha$ | $A$ | alpha | small letter: angles in math and physics | α Α | \alpha A | U+0391 U+03B1 |

$\beta$ | $B$ | beta | small letter: angles in math and physics | β Β | \beta B | U+0392 U+03B2 |

$\gamma$ | $\Gamma$ | gamma | small letter: angles in math and physics | γ Γ | \gamma \Gamma | U+0393 U+03B3 |

$\delta$ | $\Delta$ | delta | value change e.g. $\Delta t$ is often used for time difference between two moments | δ Δ | \delta \Delta | U+0394 U+03B4 |

$\epsilon$ | $E$ | epsilon | small letter: permittivity in physics | ε Ε | \epsilon E | U+0395 U+03B5 |

$\zeta$ | $Z$ | zeta | small letter: electrokinetic potential (so-called $\zeta$ potential) | ζ Ζ | \zeta Z | U+0396 U+03B6 |

$\eta$ | $H$ | eta | small letter: energy efficiency of the device or process in physics | η Η | \eta H | U+0397 U+03B7 |

$\theta$ | $\Theta$ | theta | big letter: so-called big theta notation (big $\Theta$) in computer science | θ Θ | \theta \Theta | U+0398 U+03B8 |

$\iota$ | $I$ | iota | - | ι Ι | \iota I | U+0399 U+03B9 |

$\kappa$ | $K$ | kappa | small letter: Karman's constant in fluid mechanics | κ Κ | \kappa K | U+039A U+03BA |

$\lambda$ | $\Lambda$ | lambda | - big letter: cosmologic constant in physics
- small letter: lambda calculus in computer science
| λ Λ | \lambda \Lambda | U+039B U+03BB |

$\mu$ | $M$ | mu | small letter: reduced mass in physics | μ Μ | \mu M | U+039C U+03BC |

$\nu$ | $N$ | nu | small letter: number of degrees of freedom in statistics | ν Ν | \nu N | U+039D U+03BD |

$\xi$ | $\Xi$ | xi | - small letter: random variables in statistics
- big letter: Harish-Chandra's function in mathematics
| ξ Ξ | \xi \Xi | U+039E U+03BE |

$o$ | $O$ | omicron | big letter: so-called O notation in computer science | ο Ο | o O | U+039F U+03BF |

$\pi$ | $\Pi$ | pi | - small letter: math constant (the circumference to the diameter of wheel ratio)
- big letter: multiplication symbol in mathematics
| π Π | \pi \Pi | U+03A0 U+03C0 |

$\rho$ | $P$ | ro | small letter: density in physics | &ro; &Ro; | \rho P | U+03A1 U+03C1 |

$\sigma$ | $\Sigma$ | sigma | - small letter: sigma bound in chemistry
- big letter: sum symbol in mathematics
| σ Σ | \sigma \Sigma | U+03A3 U+03C3 |

$\tau$ | $T$ | tau | small letter: average life-tyme of particles in physics | τ Τ | \tau T | U+03A4 U+03C4 |

$\upsilon$ | $\Upsilon$ | upsilon | small letter: mass to light ratio in astronomy | υ Υ | \upsilon \Upsilon | U+03A5 U+03C5 |

$\phi$ | $\Phi$ | phi | so-called gold number (see: gold ratio) | φ Φ | \phi \Phi | U+03A6 U+03C6 |

$\chi$ | $X$ | chi | small letter: molar fraction in chemistry | χ Χ | \chi X | U+03A7 U+03C7 |

$\psi$ | $\Psi$ | psi | wave function in quantum mechanics | ψ Ψ | \psi \Psi | U+03A8 U+03C8 |

$\omega$ | $\Omega$ | omega | - small letter: angular velocity in physics
- big letter: symbol of resistancy unit (ohm) in electronics
| ω Ω | \omega \Omega | U+03A9 U+03C9 |

- It is estimated that the Greek alphabet was created around the 9th century BC. It served to write the Greek language, but also to others languages influenced by Greek culture.
- In the ancient period, the Greek alphabet had many local dialects. In the classical period they were supplanted by the so-called Ionic form, which becase dominating one. In this form, the Greek alphabet has survived to this day.
- The commonly used Latin alphabet has its roots in the Greek alphabet. For this reason, some of the capital letters in the Latin alphabet are identical to the Greek counterparts.
- Nowadays, the Greek alphabet is used to write the Greek language used by around 15 million people around the world.
- Traditionally, Greek letters are used to denote physical, chemical or mathematical quantities.

**Small letter**- shows how given small letter looks like,**capital letter**- shows how given capital letter looks like,**name**- full name of letter showing how to pronounce it,**example usage**- example letter's usage in various fields of science such as physics or mathematics,**HTML entity**- shows how to get a given letter in the HTML code,**$\TeX$ format**- shows howto get a given letter in the $\TeX$ code,**unicode (hex)**- hexadecimal letter code in UNICODE system.

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greek_alphabet · greek_letters · greek_letters_in_physics · greek_letters_in_chemistry · greek_letters_in_mathematics · greek_letters_in_unicode · greek_letters_in_html · greek_letters_in_tex · greek_letters_in_latex

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