The kilopascal (kPa) equals 1,000 pascals and is the most practical unit for everyday pressure measurements in metric countries. Tire pressure, building specifications, and weather reports in Canada, Australia, and Europe commonly use kilopascals. One kilopascal equals 0.01 bar or approximately 0.145 psi, making it a convenient middle ground between scientific and industrial scales.

The bar is a metric pressure unit equal to 100,000 pascals, widely used in meteorology, oceanography, and industrial applications because it closely approximates atmospheric pressure at sea level. Tire pressure gauges in Europe, scuba diving depth ratings, and weather maps all commonly reference bars or millibars. One bar equals approximately 0.9869 atmospheres or 14.504 psi.