HTML Symbol Entities 

By on

HTML supports a variety of entity symbols which can be entered using either numbers or an entity name. The number or name is preceded by the ‘&’ sign and ends in a semi-colon (;). To enter a symbol switch to HTML view in the editor and enter the number or name (Ω for example).

Cut and past is also supported.  Select the symbol from this page, ‘ctrl C’ to copy.  Position the cursor in the editor and ‘ctrl V’ to paste.


Math Symbols

Character Entity Number Entity Name Description
∀ ∀ for all
∂ ∂ part
∃ ∃ exists
∅ ∅ empty
∇ ∇ nabla
∈ ∈ isin
∉ ∉ notin
∋ ∋ ni
∏ ∏ prod
∑ ∑ sum
− − minus
∗ ∗ lowast
√ √ square root
∝ ∝ proportional to
∞ ∞ infinity
∠ ∠ angle
∧ ∧ and
∨ ∨ or
∩ ∩ cap
∪ ∪ cup
∫ ∫ integral
∴ ∴ therefore
∼ ∼ similar to
≅ ≅ congruent to
≈ ≈ almost equal
≠ ≠ not equal
≡ ≡ equivalent
≤ ≤ less or equal
≥ ≥ greater or equal
⊂ ⊂ subset of
⊃ ⊃ superset of
⊄ ⊄ not subset of
⊆ ⊆ subset or equal
⊇ ⊇ superset or equal
⊕ ⊕ circled plus
⊗ ⊗ circled times
⊥ ⊥ perpendicular
⋅ ⋅ dot operator


Greek Letters

Character Entity Number Entity Name Description
Α Α Α Alpha
Β Β Β Beta
Γ Γ Γ Gamma
Δ Δ Δ Delta
Ε Ε Ε Epsilon
Ζ Ζ Ζ Zeta
Η Η Η Eta
Θ Θ Θ Theta
Ι Ι Ι Iota
Κ Κ Κ Kappa
Λ Λ Λ Lambda
Μ Μ Μ Mu
Ν Ν Ν Nu
Ξ Ξ Ξ Xi
Ο Ο Ο Omicron
Π Π Π Pi
Ρ Ρ Ρ Rho
Σ Σ Σ Sigma
Τ Τ Τ Tau
Υ Υ Υ Upsilon
Φ Φ Φ Phi
Χ Χ Χ Chi
Ψ Ψ Ψ Psi
Ω Ω Ω Omega
α α α alpha
β β β beta
γ γ γ gamma
δ δ δ delta
ε ε ε epsilon
ζ ζ ζ zeta
η η η eta
θ θ θ theta
ι ι ι iota
κ κ κ kappa
λ λ λ lambda
μ μ μ mu
ν ν ν nu
ξ ξ ξ xi
ο ο ο omicron
π π π pi
ρ ρ ρ rho
ς ς ς sigmaf
σ σ σ sigma
τ τ τ tau
υ υ υ upsilon
φ φ φ phi
χ χ χ chi
ψ ψ ψ psi
ω ω ω omega
ϑ ϑ ϑ theta symbol
ϒ ϒ ϒ upsilon symbol
ϖ ϖ ϖ pi symbol


Other Entities

Character Entity Number Entity Name Description
ΠΠΠcapital ligature OE
œ œ œ small ligature oe
Š Š Š capital S with caron
š š š small S with caron
Ÿ Ÿ Ÿ capital Y with diaeres
ƒ ƒ ƒ f with hook
ˆ ˆ ˆ modifier letter circumflex accent
˜ ˜ ˜ small tilde
    en space
    em space
    thin space
‌ ‌ zero width non-joiner
‍ ‍ zero width joiner
‎ ‎ left-to-right mark
‏ ‏ right-to-left mark
– – en dash
— — em dash
‘ ‘ left single quotation mark
’ ’ right single quotation mark
‚ ‚ single low-9 quotation mark
“ “ left double quotation mark
” ” right double quotation mark
„ „ double low-9 quotation mark
† † dagger
‡ ‡ double dagger
• • bullet
… … horizontal ellipsis
‰ ‰ per mille
′ ′ minutes
″ ″ seconds
‹ ‹ single left angle quotation
› › single right angle quotation
‾ ‾ overline
€ € euro
™ ™ trademark
← ← left arrow
↑ ↑ up arrow
→ → right arrow
↓ ↓ down arrow
↔ ↔ left right arrow
↵ ↵ carriage return arrow
⌈ ⌈ left ceiling
⌉ ⌉ right ceiling
⌊ ⌊ left floor
⌋ ⌋ right floor
◊ ◊ lozenge
♠ ♠ spade
♣ ♣ club
♥ ♥ heart
♦ ♦ diamond

 


ASCI Codes

In addition to HTML symbol entities, it is sometimes useful to be able to quickly enter symbols using ASCI codes. 

The enter a symbol using ASCI codes, press 'Alt' and type the code on the number keypad.

The following table lists some of the more useful codes for your posts:

Arrows Greek Other

↨ - 23, up and down arrow

↑ - 24, up arrow

↓ - 25, down arrow

→ - 26, right arrow

← - 27, left arrow

↔ - 29, left and right arrow

α - 224, Alpha

Γ - 226, Gamma

π - 227, Pi

Σ - 228, summation

σ - 229, Sigma

µ - 230, Mu

τ - 231, Tau

Φ - 232, Phi

Θ -233, Theta

Ω - 234, Omega

δ - 235, delta

∞ - 236, infinity

φ - 237, Phi

ε - 238, Epsilon

≡  - 240, equivalent symbol

± - 241, plus or minus

≥ - 242, greater or equal

≤ -243 less or equal

÷ - 246, division

≈ - 247 approximate

° - 248, degree symbol

√ - 251, square root

Example:
To enter Ω, press the ‘Alt’ key and enter 234 on the numeric keypad.



Steven McFadyen's avatar Steven McFadyen

Steven has over twenty five years experience working on some of the largest construction projects. He has a deep technical understanding of electrical engineering and is keen to share this knowledge. About the author

myElectrical Engineering

comments powered by Disqus



Harmonised Cable Codes and Colours

Within Europe the European Committee for Electrotechnical Standardization (CENELEC) has standardised the both the designation and colour of cables.   ...

Electromechanical Relays

Electromechanical relays have been the traditional backbone of electrical protection systems.  While over recent years these have been replaced by microprocessor...

ANSI (IEEE) Protective Device Numbering

The widely used United Sates standard ANSI/IEEE C37.2 'Electrical Power System Device Function Numbers, Acronyms, and Contact Designations' deals with...

myElectrical - Cable Sizing Tool Upgrade

Our IEE cable sizing was wrote a few years ago and had become rough around the edges. I thought it was time to give the tool a service. Unfortunately when...

Laplace Transform

Laplace transforms and their inverse are a mathematical technique which allows us to solve differential equations, by primarily using algebraic methods...

Post Editing Tips

If you at all familiar with programs like office and outlook, then adding and editing posts is pretty straightforward and intuitive.  However, there are...

Surface Treatment – Ladders, Trays and Baskets

Steel ladders, trays and baskets form the backbone of cable containment systems. Often these items need some form of surface treatment to prevent corrosion...

E-Ink

Before the technical, some general information. E-ink display are found in a lot of e-readers, some mobile phones and similar devices and the intent is...

LED Replacement Light Bulb

The inventor of the first visible light-emitting diode makes history again this year as it begins to show customers a 40-watt replacement GE Energy Smart...

Windows Live Writer and myElectrical

When making adding a Note to our site we have a great online WYSIWYG editor and things are pretty simple.  However, if you prefer you can write, manage...

Have some knowledge to share

If you have some expert knowledge or experience, why not consider sharing this with our community.  

By writing an electrical note, you will be educating our users and at the same time promoting your expertise within the engineering community.

To get started and understand our policy, you can read our How to Write an Electrical Note