Convert Kilopascal to Megapascal (kPa → MPa)

Converting kilopascals to megapascals is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in kilopascals

   Start with the number of kilopascals (kPa) you want to convert.
2. 2
   Multiply by 0.001

   The conversion factor from kPa to MPa is 0.001. Multiply your value by this number.
3. 3
   Read the result in megapascals

   The result is your value in megapascals (MPa).

Multiply the value in kilopascals by 0.001. For the reverse direction, multiply by 1,000.

• ✓1 kPa = 1000 Pa = 0.01 bar = 0.145 psi.
• ✓100 kPa ≈ 1 bar.
• ✓Commonly used on tyre manuals in Commonwealth countries.

• ✗Confusing kPa with kW or kJ.
• ✗Using kPa when bar would be simpler.
• ✗Mixing absolute and gauge in kPa without specification.

What is the Kilopascal?

The kilopascal equals 1,000 pascals and is the standard everyday pressure unit on tire labels (in metric countries), weather forecasts (often expressed as hPa or hectopascals, where 100 kPa = 1 atmosphere), and modern engineering documents. Car tire pressures are typically 200–250 kPa (29–36 psi), medical blood-pressure cuffs measure in mmHg but research increasingly uses kPa, and industrial process pressures are routinely given in kPa. The kilopascal is the most-used pressure unit in metric engineering practice, replacing the older 'kg/cm²' (kilogram-force per square centimeter, ≈ 98 kPa). It relates to the pascal (1,000 Pa = 1 kPa), the megapascal (1,000 kPa = 1 MPa), the bar (1 bar = 100 kPa), the psi (1 psi ≈ 6.895 kPa), and the atmosphere (1 atm ≈ 101.325 kPa). European tire pressure labels universally use kPa or bar.

• Tyre pressures in Canada, Australia
• Engineering pressure specs
• Weather pressure in some contexts

What is the Megapascal?

The megapascal equals 1,000,000 pascals (or 10 bar) and is the engineering high-pressure unit used in hydraulics, materials testing, and construction. Concrete compressive strength is rated in MPa (typical residential concrete is 20–35 MPa, structural concrete 35–70 MPa, high-strength up to 140 MPa), and steel yield strengths are 250–700 MPa for structural grades. Hydraulic systems operate at 10–70 MPa, and high-pressure-water-jet cutting reaches 400 MPa. The megapascal is dimensionally identical to N/mm² (newtons per square millimeter), making it natural for engineering calculations involving small areas. Earth's mantle pressure reaches gigapascals (1 GPa = 1,000 MPa). The MPa relates to the pascal (10⁶ Pa = 1 MPa), the bar (10 bar = 1 MPa), the psi (1 MPa ≈ 145.04 psi), and the atmosphere (1 MPa ≈ 9.87 atm). It is the standard unit in modern engineering specifications worldwide.

• Hydraulic system pressures
• Concrete and steel strength specifications
• High-pressure industrial processes