Pressure Units - Online Converter

Convert between common pressure units including Pa, bar, atmosphere, mm Hg, mm H2O, m H2O, kg/cm², psi, and more using conversion factors and interactive calculator.

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Converted Value-- Pa
Convert fromPa (N/m²)baratmospheremm Hgmm H₂Om H₂Okg/cm²
Pa (N/m²)110⁻⁵9.87×10⁻⁶0.00750.110⁻⁴1.02×10⁻⁵
bar10⁵10.9877501.0197×10⁴10.1971.0197
atmosphere1.01×10⁵1.0131759.91033210.3321.03
mm Hg133.31.33×10⁻³1.32×10⁻³113.30.0131.36×10⁻³
mm H₂O100.0000979.87×10⁻⁵0.07510.0011.02×10⁻⁴
m H₂O10⁴0.0979.87×10⁻²75100010.102
kg/cm²9.8×10⁴0.980.9773510000101
pound square feet (psf)47.84.78×10⁻⁴4.72×10⁻⁴0.364.784.78×10⁻³4.88×10⁻⁴
pound square inches (psi)6894.760.0690.06851.7689.70.6900.07
inches Hg33770.03380.03325.4337.70.3370.034
inches H₂O248.82.49×10⁻³2.46×10⁻³1.8725.40.02540.0025

Common Pressure Units Reference

Key Notes:

  • 1 Torr = 1 mm Hg
  • Pressure is "force per unit area"
  • Units like kg/cm² are technically mass units; mass must be multiplied by gravity g to be a force (weight)

Example: Convert 10 psi to Pa

From the conversion table, 1 psi = 6894.76 Pa:

  • 10 psi × 6894.76 = 68,947.6 Pa = 68.95 kPa

Additional Pressure Units

  • 1 Pa = 0.00001 Bar
  • 1 Pa = 0.0000102 Atmosphere (metric)
  • 1 Pa = 0.000145 Pound force/square inch
  • 1 Pa = 0.0000093 Standard atmosphere
  • 1 Pa = 1 Newton/square meter