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Greek letters table
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 letterCapital letterNameExample usageHTML entityTXE\TeX formatUnicode (hex)
α\alphaAAalphasmall letter: angles in math and physicsα
Α
\alpha
A
U+0391
U+03B1
β\betaBBbetasmall letter: angles in math and physicsβ
Β
\beta
B
U+0392
U+03B2
γ\gammaΓ\Gammagammasmall letter: angles in math and physicsγ
Γ
\gamma
\Gamma
U+0393
U+03B3
δ\deltaΔ\Deltadeltavalue change e.g. Δt\Delta t is often used for time difference between two momentsδ
Δ
\delta
\Delta
U+0394
U+03B4
ϵ\epsilonEEepsilonsmall letter: permittivity in physicsε
Ε
\epsilon
E
U+0395
U+03B5
ζ\zetaZZzetasmall letter: electrokinetic potential (so-called ζ\zeta potential)ζ
Ζ
\zeta
Z
U+0396
U+03B6
η\etaHHetasmall letter: energy efficiency of the device or process in physicsη
Η
\eta
H
U+0397
U+03B7
θ\thetaΘ\Thetathetabig letter: so-called big theta notation (big Θ\Theta) in computer scienceθ
Θ
\theta
\Theta
U+0398
U+03B8
ι\iotaIIiota-ι
Ι
\iota
I
U+0399
U+03B9
κ\kappaKKkappasmall letter: Karman's constant in fluid mechanicsκ
Κ
\kappa
K
U+039A
U+03BA
λ\lambdaΛ\Lambdalambda
  • big letter: cosmologic constant in physics
  • small letter: lambda calculus in computer science
λ
Λ
\lambda
\Lambda
U+039B
U+03BB
μ\muMMmusmall letter: reduced mass in physicsμ
Μ
\mu
M
U+039C
U+03BC
ν\nuNNnusmall letter: number of degrees of freedom in statisticsν
Ν
\nu
N
U+039D
U+03BD
ξ\xiΞ\Xixi
  • small letter: random variables in statistics
  • big letter: Harish-Chandra's function in mathematics
ξ
Ξ
\xi
\Xi
U+039E
U+03BE
ooOOomicronbig letter: so-called O notation in computer scienceο
Ο
o
O
U+039F
U+03BF
π\piΠ\Pipi
  • 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
ρ\rhoPProsmall letter: density in physics&ro;
&Ro;
\rho
P
U+03A1
U+03C1
σ\sigmaΣ\Sigmasigma
  • small letter: sigma bound in chemistry
  • big letter: sum symbol in mathematics
σ
Σ
\sigma
\Sigma
U+03A3
U+03C3
τ\tauTTtausmall letter: average life-tyme of particles in physicsτ
Τ
\tau
T
U+03A4
U+03C4
υ\upsilonΥ\Upsilonupsilonsmall letter: mass to light ratio in astronomyυ
Υ
\upsilon
\Upsilon
U+03A5
U+03C5
ϕ\phiΦ\Phiphiso-called gold number (see: gold ratio)φ
Φ
\phi
\Phi
U+03A6
U+03C6
χ\chiXXchismall letter: molar fraction in chemistryχ
Χ
\chi
X
U+03A7
U+03C7
ψ\psiΨ\Psipsiwave function in quantum mechanicsψ
Ψ
\psi
\Psi
U+03A8
U+03C8
ω\omegaΩ\Omegaomega
  • 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,
  • TXE\TeX format - shows howto get a given letter in the TXE\TeX code,
  • unicode (hex) - hexadecimal letter code in UNICODE system.

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