Convert kilopascals (kPa) to and from Pa, bar, atm, psi, and mmHg with bidirectional conversion, reference table, and preset values.
The kilopascal is the practical everyday unit in the SI pressure system. It is large enough to keep common pressures readable while still staying close to the base Pascal definition, which is why it appears in weather data, engineering documents, HVAC work, and many international equipment specs. Because the unit is decimal-friendly, it is also easy to scale up to MPa for strength values or down to Pa when you need a base-unit calculation.
This page converts kPa to and from the other pressure units people commonly encounter, including psi, bar, atm, mmHg, and Pa. That makes it useful when a value starts in a metric pressure system but has to be compared with US gauges, laboratory references, or medical-style units. It also helps when weather reports, tire labels, and design documents all describe the same pressure in different shorthand.
Use it when kPa is the center of the problem and you want the nearby pressure units in one place. The presets and reference table make it easier to cross-check whether a reading is ordinary atmospheric pressure, a low HVAC value, or a much higher engineering load.
kPa sits at the intersection of engineering, weather, and general metric pressure reporting. This page helps translate that SI-friendly number into the other units people are likely to see on gauges, specs, and reference tables, so you can compare values without mentally jumping between systems. That is especially useful when the same pressure appears in a weather app, a design report, and a service manual with different unit conventions.
kPa to Pa: Pa = kPa × 1,000 kPa to bar: bar = kPa ÷ 100 kPa to atm: atm = kPa ÷ 101.325 kPa to psi: psi = kPa × 0.145038 kPa to mmHg: mmHg = kPa × 7.50062
Result: 14.696 psi / 1 atm
101.325 kPa is exactly 1 standard atmosphere, which equals 14.696 psi, 1.01325 bar, and 760 mmHg.
kPa appears on tire gauges (especially outside the US), weather reports, blood pressure monitors (in some countries), and altitude instruments. Normal atmospheric pressure fluctuates between about 97 and 104 kPa depending on weather and altitude.
kPa is the standard unit for soil bearing capacity, wind loads on structures, water pressure in plumbing, and HVAC system specifications. Most international building codes specify loads in kPa or kN/m².
1 Pa = 1 N/m² (newton per square meter). 1 kPa = 1,000 Pa. 1 MPa = 1,000 kPa. 1 bar = 100 kPa. These clean decimal relationships make the SI pressure system easy to work with.
100 kPa = 14.5038 psi. That is very close to 1 atmosphere, since 1 atm = 101.325 kPa, so the two values are often used as quick mental reference points.
kPa (kilopascals) = 1,000 Pa (Pascals). The kPa is more practical for everyday pressures since most values are in the 1-1000 range, while Pa is more convenient when you need the base SI unit.
Divide by 100. For example, 250 kPa ÷ 100 = 2.5 bar, which is why the two units are easy to compare at a glance.
Yes, 1 kPa = 1 kN/m² (kilonewton per square meter). Both represent the same physical quantity, just expressed with different unit names.
101.325 kPa is standard atmospheric pressure at sea level, the reference point for normal atmospheric conditions. It equals 1 atm, 14.696 psi, 1.01325 bar, and 760 mmHg.
Multiply by 7.50062. For example, 13.3 kPa × 7.50062 = 99.76 mmHg, which is why medical pressure values can be translated into kPa without much rounding drift.