kilopascal [kPa] Unit Converter

Definition of kilopascal [kPa] unit

The kilopascal (kPa) is a metric unit of pressure equal to 1,000 pascals. Because one pascal equals one newton per square metre, one kilopascal represents 1,000 newtons of force acting over each square metre.

History of kilopascal [kPa] unit

The kilopascal belongs to the International System of Units (SI), which formalized the pascal as its pressure unit in 1971. The pascal honors Blaise Pascal, the seventeenth-century French mathematician, physicist, and philosopher whose work advanced studies of fluids and atmospheric pressure. The prefix “kilo-” comes from the metric system and denotes one thousand. Kilopascals became widely used as scientific and engineering practice adopted SI conventions, offering a practical scale between the small pascal and larger units such as the bar or megapascal.

Applications of kilopascal [kPa] unit

Kilopascals are commonly used for tire pressures, especially in countries following SI recommendations, and for measuring atmospheric, hydraulic, and pneumatic pressure. Weather reports may express air pressure in kilopascals, while engineers use them for water systems, pumps, filtration equipment, and low-to-moderate industrial pressures. Vehicle tire labels often list kPa alongside psi or bar.

Complete list of kilopascal [kPa] unit conversion