The kilopascal is a multiple of the unit bit for Pressure. The prefix kilo (symbol k) is defined in the International System of Units (SI) as a multiplier of 10 × 102 (1 thousand, short scale), and therefore 1 kilopascal = 10 × 102 pascals = 1000 pascals. The kilopascal has the unit symbol kPa.
bars
The bar is a metric unit of pressure, but is not approved as part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa, which is slightly less than the current average atmospheric pressure on Earth at sea level.