u00A0

The U+00A0 code point, commonly called the no-break space or NBSP, is a character in Unicode used to prevent a line break at its position. It functions like a regular space in many respects, but its non-breaking property means that a line will not wrap at that character. In Unicode terminology it belongs to the separator space category (Zs) and is typically displayed with the same width as a normal space, though rendering can vary by font and platform.

In terms of encoding, U+00A0 is encoded in UTF-8 as the two-byte sequence 0xC2 0xA0. In legacy single-byte encodings such as ISO/IEC 8859-1 (Latin-1) and Windows-1252, it occupies the single byte 0xA0. In HTML and XML, it can be represented as the named entity   or numerically as  .

The NBSP is widely used to keep certain elements together on a single line, such as numbers and units (for example, 100 kg) or names and titles that should not be separated by a break. It is also used in typesetting and document preparation to control line breaks in multilingual text. In web design, developers may use NBSP sparingly, or rely on CSS techniques like white-space: nowrap to prevent wrapping without introducing non-breaking spaces.

Notes and related characters: NBSP is distinct from zero-width spaces (for example U+200B) and other narrow or fixed-width space variants. When converting text between encodings, NBSP can be lost or misrepresented if the target encoding does not support it, leading to unintended wrapping or spacing issues.