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According to many sources, to type the Ω symbol on Windows 10, you use Alt+234 (i.e. hold Alt and type 234 on the keypad). However, for me that produces a Û char (upper case u-circumflex).

I have a UK/GB keyboard.

How do I type an Ω symbol?

To enable alt codes, I added EnableHexNumpad string value to Computer\HKEY_CURRENT_USER\Control Panel\Input Method in the registry.

Edit: In Character Map on Windows 10, the alt code tip is not shown for the omega symbol.

Windows 10 Character Map - Omega

But, the alt code for µ (micro) is shown in Windows 10.

Windows 10 Character Map - Micro

Seems that Û (what I get when I type Alt+234) should actually be Alt+0219. So that's confusing.

Windows 10 Character Map - U-circumflex

Nick Bolton
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  • Which app are typing it on? Try with Alt+969. – Reddy Lutonadio Jan 30 '23 at 12:31
  • Chrome on Windows. Using Alt+969 produces the "╔" char. I have a UK keyboard if that's relevant. – Nick Bolton Jan 30 '23 at 12:38
  • Did you actually press the + on the numpad or did you only press alt followed by 969? – Seth Jan 30 '23 at 12:43
  • @Seth No, I am not pressing the + key (or shift and +), but I tried that out of curiosity and it had no effect (alt and 969 still types ╔ / alt and 234 types Û). – Nick Bolton Jan 30 '23 at 12:45
  • Alt code depends on locale, so avoid it unless you're in Greek locale. Just press `Windows+;` > Symbols > Language symbol. Duplicates: [How Can I Type A Checkmark (✓) Via Alt Code?](https://superuser.com/a/1666418/241386), [Why are my Alt codes different from what is generally reported online?](https://superuser.com/q/1451575/241386). Alt+hexcode would be usable but still difficult to remember – phuclv Jan 30 '23 at 13:10
  • Ah, ok, UK keyboard... not much in the way of search results for "uk keyboard omega alt code" https://www.google.com/search?q=%2Buk+keyboard+omega+alt+code – Nick Bolton Jan 30 '23 at 13:14
  • It should be alt and +969 not just alt 969 but I guess you did try that. At least that's mentioned on sites that also mention EnableHexNumpad. The Wikipedia article on Unicode input also mentions that codes between 160 and 250 depend on code page/oem pages, lacking the use of the +. If you're on Windows using the "Emoji Keyboard" which you can bring up with Win + . might be an alternative. It does also feature a page for regular characters. It would be impractile to write a text though. – Seth Jan 30 '23 at 14:39
  • Oh, so using + (i.e. above the enter key on the numpad) does produce different chars, but not the one I was hoping for. Alt+234 produces "ȴ" and Alt+969 produces "+". – Nick Bolton Jan 30 '23 at 14:45

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Depending on the font, keyboard layout and application(?), I've found Ω can be typed by Alt+234, 0937 or 8486... or you might get yet another character, such as ♠. On this PC, at this moment, 234->Ω, 0937->©, 8486->& and 969->╔. sigh

You might find adding another keyboard layout, e.g., United States - international keyboard or Greek (Ελληνικά), helpful. Keyboard layouts can be quickly switched, e.g., with WindowsSpace, and use "dead keys" to type special characters.

Regrettably, omega, Ω, seems resistant to consistency. Mu, µ, is more easily micro-managed.

DrMoishe Pippik
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