Em Space U+2003

The em space (U+2003) is a fixed-width space that is exactly as wide as the current font size — roughly the width of a capital "M", which is where it gets its name. It belongs to a family of Unicode "fixed-width" spaces designed for typesetting, where precise, predictable spacing matters more than the stretchy behavior of an ordinary space. Use the "Copy Em Space" button above to copy it, then paste it wherever you need a wide, consistent gap.

Unlike a regular space (U+0020), which a browser or word processor can stretch or shrink when justifying a line, the em space keeps a constant width no matter what. That makes it predictable — and occasionally useful as an "invisible" character, because some platforms that trim ordinary spaces leave the em space intact.

Common Uses

• Precise indentation and spacing. Typographers use the em space for fixed indents and gaps that should not change with justification.
• Aligning text in fixed-width contexts. When you need a known, repeatable amount of horizontal space.
• Blank-looking names and messages. Because it is wider than a normal space and survives trimming on some platforms, the em space is sometimes used to create empty-looking usernames or spacing in bios. (For a truly invisible result, see Hangul Filler or Zero-Width Space.)
• Padding in design mockups. A quick way to add consistent space without CSS.

How to Type

The Fixed-Width Space Family

Unicode defines several fixed-width spaces. The em space and en space are the two most common:

Technical Details

Detecting Em Spaces

Em spaces and other fixed-width spaces can sneak into text copied from documents or design tools and cause inconsistent spacing or failed string matches. Paste your text into the Invisible Character Viewer on the homepage to reveal every em space and other hidden character, then strip them with one click.

// JavaScript: detect and normalize fixed-width spaces to a regular spacetext.replace(/[\u2000-\u200A\u202F\u205F\u3000]/g, ' ')