On macOS, Option and E, let go, then O, with Shift on that O for Ó. On Windows, hold Alt and type 0243 on the numeric keypad with Num Lock on, or 0211 for Ó. On Linux with the United States international layout, AltGr and O, or AltGr and Shift and O for the capital. Clicking the key here copies the character straight to your clipboard.

When does Spanish write an accent on an o?

Where the stress lands somewhere the ordinary rules would not put it: canción, corazón, jamón, avión, tomó. It also marks the question words apart from their plain twins, so cómo and dónde carry the accent in a question while como and donde do not.

Do I still write ó between two numbers?

No, not since 2010. The old convention wrote 5 ó 6 so the o would not be read as a zero on a typewriter, and the Real Academia Española dropped it in that year's spelling guide because modern type keeps 0 and o apart. Write 5 o 6.

Is anything uploaded?

No. The character, its codepoint and the keystrokes are part of the page, so nothing is sent anywhere and there is no account. The only thing kept is the platform and the case you picked, in this browser.

The Accented O in Spanish

ó is the acute accent on an o, U+00F3, and this page opens on it: the character large, with its codepoint, its HTML entity and the keystroke for macOS, Windows and Linux beside it. Click it to copy, or learn the sequence once and type it for yourself. The other eight Spanish characters are on the same page, the case control switches everything to Ó, and the type-here field puts the accent on the last plain o in a word you type.

o with acuteU+00F3 · ó

macOSOption+E, then O
WindowsAlt+0243
LinuxAltGr+O

Click a character to copy it. The keystroke under each key is for the platform you picked.

Case

Keystrokes

Type here

A key copies its character. With something in the field, the same click also puts the accent on the last plain a, e, i, o, u or n it finds, so cafe becomes café. When the accent belongs somewhere else in the word, as in mañana, copy the character and type it where it goes. Hold Alt and type the four digits on the numeric keypad with Num Lock on. The number row above the letters does not work. On a laptop with no keypad, switch the input to the United States international layout, where an apostrophe followed by the vowel gives the accent.

Worked examples

One vowelcafe + e
café
Two of the same vowelmama + a
mamá
The tildeespanol + n
español

Every character, with its keystrokes

The same nine characters the keys carry, in the case the control above is set to. The Windows column needs the numeric keypad with Num Lock on, and the Linux column is the United States international layout with AltGr.

Character	Name	Codepoint	macOS	Windows alt code	Linux, US international
á	a with acute	U+00E1á	Option+E, then A	Alt+0225	AltGr+A
é	e with acute	U+00E9é	Option+E, then E	Alt+0233	AltGr+E
í	i with acute	U+00EDí	Option+E, then I	Alt+0237	AltGr+I
ó	o with acute	U+00F3ó	Option+E, then O	Alt+0243	AltGr+O
ú	u with acute	U+00FAú	Option+E, then U	Alt+0250	AltGr+U
ñ	n with tilde	U+00F1ñ	Option+N, then N	Alt+0241	AltGr+N
ü	u with diaeresis	U+00FCü	Option+U, then U	Alt+0252	AltGr+Y
¿	inverted question mark	U+00BF¿	Option+Shift+?	Alt+0191	AltGr+Shift+?
¡	inverted exclamation mark	U+00A1¡	Option+1	Alt+0161	AltGr+1

Exact, and that is the whole claim. Every key copies the standard Unicode codepoint for that character and nothing else, so what lands in your clipboard is exactly what you clicked. The keystrokes are the documented sequences for each platform. The characters are held in this page, so nothing is uploaded and it keeps working with no connection. Only the platform and the case you picked are remembered, in this browser.

Common questions

How do I type ó?: On macOS, Option and E, let go, then O, with Shift on that O for Ó. On Windows, hold Alt and type 0243 on the numeric keypad with Num Lock on, or 0211 for Ó. On Linux with the United States international layout, AltGr and O, or AltGr and Shift and O for the capital. Clicking the key here copies the character straight to your clipboard.
When does Spanish write an accent on an o?: Where the stress lands somewhere the ordinary rules would not put it: canción, corazón, jamón, avión, tomó. It also marks the question words apart from their plain twins, so cómo and dónde carry the accent in a question while como and donde do not.
Do I still write ó between two numbers?: No, not since 2010. The old convention wrote 5 ó 6 so the o would not be read as a zero on a typewriter, and the Real Academia Española dropped it in that year's spelling guide because modern type keeps 0 and o apart. Write 5 o 6.
Is anything uploaded?: No. The character, its codepoint and the keystrokes are part of the page, so nothing is sent anywhere and there is no account. The only thing kept is the platform and the case you picked, in this browser.

Every key copies the standard Unicode codepoint for that character and nothing else, so what lands in your clipboard is exactly what you clicked. The keystrokes are the documented sequences for each platform.