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⌋

right floor

Right floor

⌋ is the right floor bracket: the closing half of the floor function, written ⌊x⌋ and meaning “the greatest integer less than or equal to x.” You meet it in maths, computer science and LaTeX, where it is \rfloor. On its own, ⌋ is only half of the notation.

Text symbol
Also called
right floor bracket · rfloor
Search it as
floor bracket · floor function · greatest integer · round down · latex rfloor
Shows up in
Anything that takes text · its shape is whatever your font draws

What ⌋ means

⌋ closes a floor expression, which rounds down. ⌊3.8⌋ = 3 and ⌊−3.8⌋ = −4: floor always rounds toward minus infinity, not toward zero.

The idea is older than the shape. Gauss wrote the greatest-integer function with ordinary square brackets, [x], in 1808. Kenneth Iverson introduced the name “floor” and this half-bracket pair in 1962, in his programming notation, alongside the ceiling pair for rounding up.

Technical notation for maths and code; it carries no conversational tone.

⌋ alone is not the floor function — it needs ⌊ to open it.

Don't confuse it with

2
⌉
Right Ceiling
Right ceiling: the bar sits at the top and means rounding up.
」
Right Corner Bracket
CJK right corner bracket, a quotation mark in Japanese and Chinese, not floor notation.

Questions people ask

1

Why does ⌋ look different in different fonts?

Font design. Unicode's chart glyphs are not mandatory, so stroke height, bar length and spacing vary; the character's role as the right floor delimiter does not.

How to type ⌋

Windows (Word)
Alt+XType 230B, then Alt+X to get ⌋.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “right floor”.
Linux
Ctrl+Shift+UType 230b, then Enter or Space.
HTML
⌋
CSS
\230B
LaTeX
\rfloor in math mode, paired with \lfloor: \lfloor x \rfloor.
Windows (Word, WordPad)
Type 230B, then press Alt+X.
Codes and encoding1 code points
HTML decimal
⌋
HTML hex
⌋
CSS content
content: "\230B";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%8C%8B
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

1

Maths & numbers1,835 symbols

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