HTML entities allow you to display symbols that are not available on your keyboard, or that have special meanings in HTML (such as the less than and greater than signs).
By using entity codes, you can add these symbols to your HTML documents without having to use special software or hardware.
Mathematical Symbols for HTML
| Symbols | Entity Name | Description |
|---|
| α | α | Alpha |
| β | β | Beta |
| γ | γ | Gamma |
| ∑ | ∑ | Summation |
| xi2 | x<sub>i</sub><sup>2</sup> | X squared sub i |
| π | π | Pi (3.14159265359...) |
| θ | θ | Theta (a variable angle measurement) |
| √ | √ | Square root symbol |
| ≥ | ≥ | Greater than or equal to |
| ≤ | ≤ | Less than or equal to |
| an+1 = an/2 | a<sub>n+1</sub> = a<sub>n</sub>/2 | A recursive formula |
Here are some Greek letters supported by HTML
| Greek Letter | HTML Entity Name | HTML Entity Number | Symbols |
|---|
| Alpha | α | α | α |
| Beta | β | β | β |
| Gamma | γ | γ | γ |
| Delta | δ | δ | δ |
| Epsilon | ε | ε | ε |
| Zeta | ζ | ζ | ζ |
| Eta | η | η | η |
| Theta | θ | θ | θ |
| Iota | ι | ι | ι |
| Kappa | κ | κ | κ |
| Lambda | λ | λ | λ |
| Mu | μ | μ | μ |
| Nu | ν | ν | ν |
| Xi | ξ | ξ | ξ |
| Omicron | ο | ο | ο |
| Pi | π | π | π |
| Rho | ρ | ρ | ρ |
| Sigma | σ | σ | σ |
| Tau | τ | τ | τ |
| Upsilon | υ | υ | υ |
| Phi | φ | φ | φ |
| Chi | χ | χ | χ |
| Psi | ψ | ψ | ψ |
| Omega | ω | ω | ω |
Currency Symbols for HTML
| Symbols | Entity Name | Description |
|---|
| ¢ | ¢ | Cent |
| £ | £ | Pound |
| ¥ | ¥ | Yen |
| € | € | Euro |
| $ | $ | Dollar |
Arrow Symbols for HTML
| Symbols | Entity Name | Description |
|---|
| ← | ← | Left arrow |
| → | → | Right arrow |
| ↑ | ↑ | Up arrow |
| ↓ | ↓ | Down arrow |
| ↔ | ↔ | Left right |