Kelvin Sign
Part of Math Symbols
Kelvin Sign has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- K
- Unicode
- U+212A
About this symbol
K, the kelvin sign, is the unit of the absolute temperature scale proposed in 1848 by William Thomson, later Lord Kelvin, which starts at absolute zero, −273.15 °C. Since 1967 it is written K with no degree sign, and the separate kelvin sign exists only for compatibility with older character sets: the plain letter K is the one to use.
Unicode facts
- Official name
- KELVIN SIGN
- Type
- Uppercase letter
- Unicode block
- Letterlike Symbols
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.