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.

Greek alphabet#

Small letter	Capital letter	Name	Example usage	HTML entity	$\TeX$ format	Unicode (hex)
Show source $\alpha$	Show source $A$	alpha	small letter: angles in math and physics	α Α	\alpha A	U+0391 U+03B1
Show source $\beta$	Show source $B$	beta	small letter: angles in math and physics	β Β	\beta B	U+0392 U+03B2
Show source $\gamma$	Show source $\Gamma$	gamma	small letter: angles in math and physics	γ Γ	\gamma \Gamma	U+0393 U+03B3
Show source $\delta$	Show source $\Delta$	delta	value change e.g. $\Delta t$ is often used for time difference between two moments	δ Δ	\delta \Delta	U+0394 U+03B4
Show source $\epsilon$	Show source $E$	epsilon	small letter: permittivity in physics	ε Ε	\epsilon E	U+0395 U+03B5
Show source $\zeta$	Show source $Z$	zeta	small letter: electrokinetic potential (so-called $\zeta$ potential)	ζ Ζ	\zeta Z	U+0396 U+03B6
Show source $\eta$	Show source $H$	eta	small letter: energy efficiency of the device or process in physics	η Η	\eta H	U+0397 U+03B7
Show source $\theta$	Show source $\Theta$	theta	big letter: so-called big theta notation (big $\Theta$ ) in computer science	θ Θ	\theta \Theta	U+0398 U+03B8
Show source $\iota$	Show source $I$	iota	-	ι Ι	\iota I	U+0399 U+03B9
Show source $\kappa$	Show source $K$	kappa	small letter: Karman's constant in fluid mechanics	κ Κ	\kappa K	U+039A U+03BA
Show source $\lambda$	Show source $\Lambda$	lambda	big letter: cosmologic constant in physics small letter: lambda calculus in computer science	λ Λ	\lambda \Lambda	U+039B U+03BB
Show source $\mu$	Show source $M$	mu	small letter: reduced mass in physics	μ Μ	\mu M	U+039C U+03BC
Show source $\nu$	Show source $N$	nu	small letter: number of degrees of freedom in statistics	ν Ν	\nu N	U+039D U+03BD
Show source $\xi$	Show source $\Xi$	xi	small letter: random variables in statistics big letter: Harish-Chandra's function in mathematics	ξ Ξ	\xi \Xi	U+039E U+03BE
Show source $o$	Show source $O$	omicron	big letter: so-called O notation in computer science	ο Ο	o O	U+039F U+03BF
Show source $\pi$	Show source $\Pi$	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
Show source $\rho$	Show source $P$	ro	small letter: density in physics	&ro; &Ro;	\rho P	U+03A1 U+03C1
Show source $\sigma$	Show source $\Sigma$	sigma	small letter: sigma bound in chemistry big letter: sum symbol in mathematics	σ Σ	\sigma \Sigma	U+03A3 U+03C3
Show source $\tau$	Show source $T$	tau	small letter: average life-tyme of particles in physics	τ Τ	\tau T	U+03A4 U+03C4
Show source $\upsilon$	Show source $\Upsilon$	upsilon	small letter: mass to light ratio in astronomy	υ Υ	\upsilon \Upsilon	U+03A5 U+03C5
Show source $\phi$	Show source $\Phi$	phi	so-called gold number (see: gold ratio)	φ Φ	\phi \Phi	U+03A6 U+03C6
Show source $\chi$	Show source $X$	chi	small letter: molar fraction in chemistry	χ Χ	\chi X	U+03A7 U+03C7
Show source $\psi$	Show source $\Psi$	psi	wave function in quantum mechanics	ψ Ψ	\psi \Psi	U+03A8 U+03C8
Show source $\omega$	Show source $\Omega$	omega	small letter: angular velocity in physics big letter: symbol of resistancy unit (ohm) in electronics	ω Ω	\omega \Omega	U+03A9 U+03C9

Some facts#

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.

What is the meaning of each calculator field ?#

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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