Pressure Unit Converter
Instantly convert between bar, psi, and other Pressure units — accurate, free, and built for water treatment engineering work.
Quick Reference Table
| Unit | Converted to bar | bar converted to unit |
|---|---|---|
| psi | 1 psi = 0.068948 bar | 1 bar = 14.5038 psi |
| kPa | 1 kPa = 0.01 bar | 1 bar = 100 kPa |
| MPa | 1 MPa = 10 bar | 1 bar = 0.1 MPa |
| atm | 1 atm = 1.0132 bar | 1 bar = 0.986923 atm |
| mH₂O | 1 mH₂O = 0.098067 bar | 1 bar = 10.1972 mH₂O |
| kgf/cm² | 1 kgf/cm² = 0.980665 bar | 1 bar = 1.0197 kgf/cm² |
Engineering Context
Feed pressure, net driving pressure, and membrane burst ratings are specified in bar by most non-US manufacturers and in psi by US ones — this is the single most-used conversion when cross-checking an RO or UF membrane data sheet against a system design spec.
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