Engineering Unit Converter
Convert the units engineers actually use when specifying metal: stress and pressure, temperature, length and thickness, and mass. Enter a value once and read every equivalent instantly.
Stress / strength & pressure
Temperature
Length / thickness
Mass
Key conversions to remember
- 1 ksi = 6.895 MPa · 1 MPa = 145.0 psi · 1 MPa = 1 N/mm²
- 1 inch = 25.4 mm · 1 mil = 0.0254 mm
- °F = °C × 9/5 + 32 · K = °C + 273.15
- 1 kg = 2.20462 lb · 1 tonne = 1.10231 US ton
Frequently asked questions
How do I convert MPa to ksi?
Divide MPa by 6.895. For example 500 MPa is 72.5 ksi. To go the other way multiply ksi by 6.895.
Is N/mm2 the same as MPa?
Yes, exactly. One newton per square millimetre equals one megapascal, which is why steel strength is quoted interchangeably in both units.
How do I convert Celsius to Fahrenheit?
F = C x 9/5 + 32. For temperature differences (such as a thermal expansion delta-T) use only the 9/5 factor without the +32 offset.
What is a mil in sheet metal?
One mil is one thousandth of an inch (0.001 in = 0.0254 mm). It is commonly used for coating thickness rather than sheet gauge.
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