The kPa, or kilopascal, is a metric unit of pressure. It is derived from the pascal, which is the basic unit of pressure in the International System of Units (SI). One kilopascal (kPa) is equal to 1,000 pascals (Pa). In the automotive industry and in the measurement of tire pressure, kPa is a commonly used unit, especially in countries that use the metric system. Tyre pressure gauges often allow users to choose between different units.