Omega Symbol – Notation, Meaning, History, Copy and Paste

You must have heard of the ‘Omega Symbol’ or have seen this (Ω) symbol somewhere or the other. It is one of the oldest and most widely used symbols in the world. You can read about the difference between sign and symbol at

Interestingly, the Omega symbol is used in a variety of fields, and those fields are in no way even distantly related to each other. On the one hand, this symbol defines the comprehensive nature of God in Christianity. On the other hand, it is used as a branding to testify the reliability of products like watches. In scientific fields like physics, it denotes resistance. While in the Greek alphabet series, it signifies the “great end.” It is also used in mathematics or computer science as Chaitin’s constant.

But do you know the exact meaning of the ‘Omega Symbol’? Why and how has it acquired so much significance to be used in such a wide variety of fields? And most importantly, can you list the various usages of the ‘Omega Symbol’ in the Information Technology industry? Pore over to get your answers to all these questions.

Omega Symbol Meaning

The iconic Omega symbol is the twenty-fourth and the last letter of Greek alphabet series. The uppercase is written as Ω. While the lowercase is written as ω. It is transliterated as o or ō in Modern Greek. And denotes a value of 800 in Gematria or the Greek numerical system.

In the ancient Greek writing system, only uppercase letters were used. The Ω sign being the last letter of the alphabet series was given the name “Omega” or the “Great O.” Here, the term “Great” refers to the ending of the alphabet series. In other words, the name “Omega” represents the “Great End.”

Greek Symbols

Omega Symbol With Line Underneath Meaning

The Omega symbol with a line underneath refers to an astrological sign called Libra. It is the seventh sign in the zodiac and is considered one of the three air signs. People born between 23rd September and 22nd October are believed to have Libra as their birth sign.

Omega Symbol With Line Underneath

People belonging to this zodiac sign are ruled by the planet Venus. According to the writings of Marcus Manilius, the Roman poet, author, and astrologer, Libra was the zodiac sign of Roman Judges.

Interestingly, Libra is the only sign among all other signs of the zodiac, denoted by a non-living object that is a pair of balance scales. To represent a preliminary version of this zodiac sign, an omega symbol with a line underneath is used.

Omega Symbol in Religion

In Christianity, the Omega symbol is used along with the Alpha symbol to represent the all-inclusive and complete nature of God. Alpha is the first letter of the Greek alphabet series, while Omega is the letter. Using these two letters for God is a way of implying that the beginning and end of the world depend on God’s desire. In fact, the term “Alpha and Omega” is used in the New Testament “Apocalypse of John” as the self-representation of God and his messenger that is Christ. It implies that both God and Christ are eternal. Nothing in this world is beyond them.

The usage of the letters Alpha and Omega to represent God traces its origin in early Christianity. This claim is further reinforced by the fact that in ancient Christian sculptures and paintings, these letters were often found on the cross symbol’s arms. The Alpha (A) used to be on the left side. While the Omega (Ω) used to be on the right side. Even though the letters are Greek, they were more used in the Christian paintings of the Western Roman Empire than the Orthodox Christian Eastern Roman Empire.

In modern times, the A and Ω symbols are also depicted on the left and right-hand side of Christ’s halo, respectively. Here, the letters imply that both the beginning and end are contained within Christ as a single entity. These letters are also used with other Christian signs and Chi-rho, the first two alphabets of Christ’s spelling in Greek.

History of Omega 

Even though it is a Greek Symbol, the Ω symbol was not a part of the Greek alphabet series until the eighth century BCE. It was first used in Asia Minor or modern-day Turkey in the 7th century BCE as an alternative form of Omicron (O). While the Omicron was a complete whole, Omega was broken at the side with protruding edges (ɔ). The former was pronounced as “oú.” While the latter was uttered as “ō.”This broken version of Omicron was used in different islands of the Aegean Sea like Thasos, Melos, and Paros, with their edges, turned in different directions.

The modern-day lowercase Omega (ω) traces its origin in the “Uncial” form, a majuscule script that evolved during the 3rd century BCE and was used by ancient scribes to write Papyrus. The small letter Omega acquired its present form from a flattened-out version with the edges further turned skywards.

Omega Symbol Unicode

Unicode is a universal standard for encoding, denoting, and dealing with texts of different language systems of the world. To put it more simply, this encoding system assigns a unique code point to the letters, numbers, recognized symbols, mathematical notations, and characters of all the writing systems. This code point is applicable across different programs and platforms. Following are the Unicode of upper case and lower case Omega symbol:

  1. Greek Capital Letter Omega (Ω)- U+03A9
  2. Greek Small Letter Omega (ω)- U+03C9

The Unicode of some of the other Omega based logos are:

  1. Greek Capital Letter Omega with Tonos (Ώ)- U+038F
  2. Greek Capital Letter Omega with Psili (’Ω)- U+1F68
  3. Greek Capital Letter Omega with Dasia (‘Ω)- U+1F69
  4. Greek Capital Letter Omega with Varia (‘Ω)- U+1FFA
  5. Greek Capital Letter Omega with Prosgegrammeni (Ωι)- U+1FFC
  6. Ohm Sign (Ω)- U+2126
  7. Square K Ohm (κΩ)- U+33C0
  8. Square M Ohm (ΜΩ)- U+33C1
  9. Mathematical Bold Capital Omega (Ω)- U+1D6C0
  10. Mathematical Italic Capital Omega(Ω)- U+1D6FA
  11. Mathematical Bold Italic Capital Omega(Ω)- U+1D734
  12. Mathematical Sans-serif Bold Capital Omega(Ω)- U+1D76E
  13. Mathematical Sans-serif Italic Capital Omega(Ω)- U+1D7A8
  14. Greek Small Letter Omega With Tonos(ώ)- U+03CE
  15. Greek Small Letter Omega with Psili(’ω)- U+1F60
  16. Greek Small Letter Omega With Dasia(‘ω)- U+1F61
  17. Greek Small Letter Omega with Varia(‘ω)- U+1F7C
  18. Greek Small Letter Omega with Yprogegrammeni()- U+1FF3
  19. Greek Small Letter Omega with Perispomeni()- U+1FF6
  20. Mathematical Bold Small Omega(ω)- U+1D6DA
  21. Mathematical Italic Small Omega(ω)- U+1D714
  22. Mathematical Bold Italic Small Omega(ω)- U+1D74E
  23. Mathematical Sans-serif Bold Small Omega(ω)- U+1D788
  24. Mathematical Sans-serif Bold Italic Small Omega(ω)- U+1D7C2

Omega Symbol ASCII Code

American Standard Code For Information Interchange (ASCII) is an encoding system that was launched in 1963. Since computers do not understand any language except numbers, it is essential to represent the characters of different language systems and scripts through numerals. This is what ASCII actually does.

It assigns each letter of a language, a numeral between 0 and 127, so that the computer can understand your inputs. There are different numerals for capital and small letters. However, the 0-127 (7-bit code) set or the “standard character set” is only applicable to English characters. To represent characters like popular symbols, diacritical marks, and other elements for drawing frames and boxes, the “standard character set” was extended. The new “extended ASCII” (8-bit code) supported 256 characters (128-255), which includes the “Omega Symbol.”

The ASCII Code of the Omega Symbol (Ω) is 234.

Omega Symbol Decimal, Hex and HTML Code

The following are the Decimal, Hex, and HTML codes for the “Omega Symbol.”

Greek Upper Case Omega (Ω):

Decimal Code&#937
Hex Code&#x3a9
HTML Entity&Omega

Greek Lower Case Omega (ω):

Decimal Code&#969
Hex Code&#x3c9
HTML Entity&Omega

Omega Symbol Copy Paste

If you want to use the iconic Omega logo, you can easily copy it from here.

Greek Capital Letter Omega:


Greek Small Letter Omega:


How to Insert Omega Symbol in Word?

There are primarily two methods to insert the Omega Symbol in a Word document.

Method 1

To insert the Omega Symbol in your Word document, click on the “Insert” option. You will get the option on the top-left of your computer screen beside the “Home” option. After you have clicked the “Insert” option, you will find a box called “Symbols” on your computer screen’s top-right side. Within that box, you will find two options, “Equation” and “Symbol.”

Omega Symbol in Word

If you wish to use the Greek Uppercase Omega Symbol, click on the “Symbol” option, and you will easily find the Omega Symbol. For the Greek Lowercase Omega Symbol and other Omega based symbols, you need to click on “more options.” You will find all the Greek characters with their Character code and Unicode(hex). Click on the “Insert” button, and you will find the Omega Symbol on your document page.

Method 2

You can also insert the Omega Symbol by accessing the “Equation” tools from the “Symbols” toolbox. Once you have clicked on the “Equation” option, you will find a variety of “Basic Math” symbols. Here you can find the Greek Small Letter Omega Symbol. If you wish to use the Greek Capital Letter Omega Symbol, you need to click on the “Basic Math” option.

Once you have done so, a small drop-down menu containing options like “Basic Math,” “Greek Letters,” “Letter-Like Symbols,” “Operators,” “Arrows,” “Negated Relations,” “Scripts” and “Geometry” will appear on the top-left side of your screen. To get access to both Uppercase and Lowercase Omega or other Greek symbols, you have to click on the “Greek Letters” option.

How to Insert Omega Symbol in Google Sheets?

Unfortunately, Google spreadsheet doesn’t have a “Character Map” of its own. Therefore, to insert the Omega symbol, you need to copy-paste it from a Character Table from your Windows operating system, or from the Google Docs. You can also copy the logo from Microsoft Word.

Insert Alpha Symbol in Google Sheets

Using Windows “Character Map”

  1. Open the “Character Map” by searching for it from your “Start” button.
  2. Find the Omega Symbol and click on it.
  3. Click the “Copy” option to enable the symbol to be copied to the clipboard.
  4. In your Google Spreadsheet, right-click on the cell where you want to insert the symbol and paste it.

Using Google Docs

  1. Open your Google Docs along with your Google spreadsheets.
  2. Click on the “Insert” option and go to the “Special Characters.”
  3. Click on the box called “Symbol” and a drop-down menu will appear on your screen.
  4. Select the “Other European Scripts” option and choose “Greek” from the adjacent box of languages.
  5. Click on the Omega symbol and copy it from the Docs page.
  6. In your Google spreadsheets, paste the symbol in the concerned cell.

Using Microsoft Word

  1. Open the Microsoft Word document and click on the “Insert” option.
  2. Go to the “Symbols” box and press on either the “Symbol” option or the “Equation” option.
  3. Select the Omega Symbol and copy it from the document page.
  4. Open the Google spreadsheet and paste the symbol.

How to Type Omega Symbol on Mac?

  1. To type the Omega Symbol on your Mac OS, go to the “Apple” option on the top-left corner of your screen.
  2. From the drop-down menu, click on “System Preferences.” A window containing a variety of tools will appear on your screen.
  3.  Click on the “Keyboard” icon. On the next screen, you will see a variety of headings like “Keyboard,” “Text,” “Shortcuts,” “Input Sources,” and “Dictation.”
  4. Click on the “Keyboard” heading. Under the header, you will see an option called “Show keyboard and emojis viewers in the menu bar.
  5. Select that option, and an icon will appear on the top-right corner of your screen.
  6. Click that icon, and you will see a drop-down list containing three options, “Show Emoji & Symbols,” “Show Keyboard,” and “Open Keyboard Preferences.”
  7.  Click on the “Show Keyboard” option.
  8. Now, hold the “Option” key and type “z.” You will see the Omega Symbol appear on your screen.

How to Insert Omega Symbol in Excel?

Insert Alpha Symbol in

You will be relieved to know that unlike Google spreadsheets, Microsoft Excel has its own “Character Map.” Consequently, you don’t need to deal with the hassles of opening Google Docs, Windows Character Map, or Microsoft word to copy-paste the symbol. Just follow the steps given below to insert the Omega symbol in the Excel cells:

  1. Click on the “Insert” tab and go to the “Text” box. There you will find the “Symbol” option.
  2. Select the option and type “(normal text)” in the box beside the “Font” option.
  3. In the box adjacent to the “Subset” option, type “Greek and Coptic.” You will see a variety of Greek characters on the character table.
  4. Click on the Omega symbol and press the “Insert” button. The Omega sign will appear on the Excel cell you have selected.

How to Insert Omega Symbol with Keyboard?

  1. To insert the Omega symbol with keyboard, you need to first switch on the “NumLock,” also called the “Number Lock” button.
  2. Once you have pressed the button, you need to press the “Alt” button.
  3. Keep pressing the “Alt” button unless you have typed the number sequence for the Omega Symbol.
  4. Release the “Alt” button, and the Omega symbol will appear on your screen.

The “Alt Codes” for the Omega symbol (Ω) is Alt 234.

Where is the Omega Symbol on iPhone?

To use the Omega Symbol on your iPhone, you need to enable the Greek Keyboard on your iPhone. It is because the symbol is not accessible from the standard keyboard, among other special characters.

  1. Go to your iPhone’s “Settings” option.
  2. Tap on “General.”
  3. Then, tap on “Keyboard.”
  4. After that, tap on the “Keyboards” option.
  5. Now, tap on “Add New Keyboards,” and you will find a variety of language options on your mobile screen.
  6. Select “Greek” and then try your keyboard in any of your apps.
  7. In your iPhone keyboard, tap on the “Browser” symbol to change the keyboard language to Greek.
  8. You can now type both uppercase and lowercase Omega symbol from your Greek keyboard.

Where is the Omega Symbol on Android?

If you are using an Android phone, you must make Gboard your best friend to use the Omega Symbol. The Google Keyboard is multilingual, and you can use a variety of scripts whenever you want. Unfortunately, just like an iPhone keyboard, you won’t find the Omega symbol among other special characters in a Standard English Keyboard. Therefore, you need to add the Greek keyboard to your list of input languages. Follow the steps given below to add the Greek characters to your Gboard:

  1. Long press on the space bar of your Gboard and then go to the “Language settings.”
  2. Tap on “Add Keyboard.” You will find a variety of languages on your phone screen.
  3. Browse through the languages to find the option “Greek.” You will see three types of Greek keyboards.
  4. Select any of them, and the keyboard will be added to your Gboard.
  5. To access the Greek keyboard, either long-press on the space bar or simply tap the “Browser” icon on your Gboard to change the keyboard language to Greek.
  6. You will be able to access both uppercase and lowercase Omega symbol from the new Greek keyboard.

How do you make an Omega symbol in LaTeX?

Making a Greek alphabet in LaTex is quite straightforward. All you need to do is write the name of the Greek alphabet and add a backslash before it. Following are the commands for making the Omega symbol in LaTex:

  1. Greek Uppercase Omega (Ω): \Omega
  2. Greek Lowercase Omega (ω): \omega

Omega Symbol for Instagram

People often find it challenging to use the iconic Omega logo in their Instagram posts, statuses, and direct messages. It happens because their standard phone keyboard (neither iPhone nor Android) contains the Omega symbol, among other special characters. To use the Omega symbol, they are compelled to leave the app and copy the sign from somewhere else.

However, there is a way through which you can use the Omega symbol whenever you want without leaving the app. All you need to do is add the Greek keyboard to your phone keyboard.

The procedure for adding the Greek keyboard in both iPhone and Android phone are mentioned in the previous sections. Just follow the steps and use the Omega symbol, both uppercase and lowercase, whenever and wherever you want. The procedure applies to all online platforms.

If you are accessing your Instagram account from your desktop, follow the steps mentioned in the sections, “How to Type Omega Symbol on Mac?” and “How to Insert Omega Symbol with Keyboard?” for Mac OS and Windows respectively.

Why is Omega the Symbol for Ohms?

Ohms is the SI unit for denoting electrical resistance. It is named after the German Mathematician and Physicist, Georg Simon Ohm. Using Greek letters to represent units in Physics is almost considered a trend, and the subject matter of electricity is no different.

To denote the symbol of electrical resistance, the uppercase Greek letter is used. It is because the surname “Ohm” sounds a lot like the Greek letter “Omega” or the great “O.” Hence, under the International System of Units, it has been decided that the Greek Capital Letter Omega (Ω) will serve as the symbol for Ohms.

What Does Omega Symbol Mean in Math?

Greek Uppercase Omega Symbol (Ω): The uppercase Omega symbol is used for the following purposes in Mathematics:

  1. It denotes the first or the smallest “infinite ordinal number.”
  2. In Multiple-Variable Calculus, it denotes graded algebra of differential forms.
  3. It is the Chaitin’s constant, which denotes the potential halting of a random algorithm.
  4. It is used to calculate the natural number n‘s total number of prime factors in number theory.
  5. It is used in the asymptotic notation for denoting “asymptotic lower bounds.”

Greek Lowercase Omega Symbol (ω): The lowercase Omega symbol is used for the following purposes in Mathematics:

  1. It is used to denote the smallest “infinite ordinal number.”
  2. In the statement of the generalized theorem of Stoke, it is used as a particular differential form.
  3. It is used to find out each definite prime factors of natural number n in number theory.
  4. In asymptotic notation, it is used to denote the “asymptotic lower bound,” which is not tight.

What Does Omega Symbol Mean in Physics (Electricity)?

Omega Symbol Mean in Physics

The Greek Capital Letter Omega symbol (Ω) stands for Ohms in Physics. Ohm is the SI unit for resistance in electricity. It has been named after Georg Simon Ohm, the Physicist and Mathematician, who discovered the connection between current and voltage.

A component is said to have one Ohm of resistance in a DC (Direct Current) if a probable difference of one volt generates one ampere of current through it.


Whether it is religion, science, literature, entertainment, or business, the ‘Omega Symbol’ has always been used to denote something reliable, durable, or of comprehensive nature. The fact that the ‘Omega Symbol’ continues to be relevant even today and in such varied and unrelated fields serves as a living testimony to its durability, reliability, and comprehensiveness.