O in Bubble Letters — Copy & Paste
O in two cases — Ⓞ and ⓞ — with O a tap from your clipboard.
O-Words in Bubble Letters
O-words below, each O styled and ready on its card.
O in Bubble Letters — the Character
O pairs Ⓞ (U+24C4) with ⓞ — O carries its shape everywhere.
The Letter That Is Already a Circle
Every other bubble letter is a shape placed inside a ring. The O is the odd one out: it is a circle to begin with, so the circled Ⓞ (U+24C4) is a circle inside a circle — a ring within a ring, the only bubble letter that doubles its own defining form. That makes it one of the most visually satisfying characters in the whole set, a concentric target that reads cleanly at any size because there is nothing inside to crowd.
Its history matches its shape. O descends from the Phoenician letter ayin, which meant 'eye' and was drawn as a simple circle, through Greek omicron ('little o'). It has been a round hole in the alphabet for three thousand years — the rare letter whose form has barely changed since it was invented, because a circle is hard to improve on.
O, Zero, and the Hug
The O's perfect roundness creates the alphabet's most famous ambiguity: O versus zero. Typewriters once saved a key by using the same character for both; computing had to force them apart, which is why some fonts slash the zero (Ø-like) to distinguish it from the letter. On this page there is no confusion — the bubble Ⓞ is unambiguously the letter, while circled zero has its own character, ⓪ (U+24EA), the one number that joins the circled alphabet.
O has a sweeter double life too: in 'XOXO', the O is a hug (the X a kiss), a convention from old letter-signing that survives in every affectionate text message. Few letters carry a meaning that warm.
Setting the Bubble O
'Bubble letter o' draws around forty-six hundred searches a month, riding O-names — Olivia, Oscar, Owen — and the letter's constant presence in English words. The Ⓞ is effortless to set: its symmetry means it needs no compression and never looks lopsided, making it one of the safest bubble letters for names and monograms alike.
Because it is so clean, the O also anchors bubble text nicely between busier letters. Run your word through the converter below and notice how the O's open ring gives the eye a rest in a row of denser characters.
Copying This O
The cards above copy Ⓞ (U+24C4) and ⓞ (U+24DE) as plain Unicode text; circled zero ⓪ (U+24EA) pastes the same way if you need the number. All render everywhere current, no font.
O in Other Styles
O across the family — every style draws O differently.
Generate Bubble Letters Text
O came from this converter — feed it anything:
Frequently Asked Questions
Why does the bubble O look like a circle in a circle?▼
Because O is already a circle — it is the only bubble letter whose own shape is a ring, so the circled Ⓞ is a ring within a ring. O descends from the Phoenician 'eye' letter, drawn as a circle three thousand years ago, and its form has barely changed since.
How do you tell the bubble O from a zero?▼
The letter is Ⓞ (U+24C4); the number has its own character, circled zero ⓪ (U+24EA) — the one digit that joins the circled alphabet. So there is no ambiguity here, unlike on old typewriters that used one key for both.
O — how do I copy this bubble letter?▼
O copies from either card up top — tap once and O is clipboard-ready.
O on Instagram and Discord — does it paste?▼
O is code point U+24C4, so O survives any paste intact.
O in Unicode — which code point?▼
O: U+24C4 upper, U+24DE lower — O is standard on all devices.