Pressure unit converter

UNITS: bar · mbar · Pa · kPa · MPa · psi · kg/cm² · atm · mmHg · mmH₂O · inHg
ATMOSPHERE: 1 atm = 1.01325 bar (absolute = gauge + atmosphere)
EXACT: Defining factors (1 psi = 6894.757 Pa · 1 kg/cm² = 98066.5 Pa)

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TAB

VALUE

REFERENCES

Quick table

bar	bar	psi	kg/cm²	MPa	atm
0.5	0.5	7.252	0.50986	0.05	0.49346
1	1	14.504	1.02	0.1	0.98692
2	2	29.008	2.039	0.2	1.974
4	4	58.015	4.079	0.4	3.948
6	6	87.023	6.118	0.6	5.922
10	10	145.04	10.197	1	9.869
16	16	232.06	16.315	1.6	15.791
25	25	362.59	25.493	2.5	24.673
40	40	580.15	40.789	4	39.477
64	64	928.24	65.262	6.4	63.163
100	100	1,450.4	101.97	10	98.692
160	160	2,320.6	163.15	16	157.91

Gauge pressure (barg) is measured relative to the atmosphere; this is what pressure gauges show. Absolute pressure (bara) is measured relative to vacuum; steam tables and gas calculations use it.
kg/cm² (at, technical atmosphere) is old but still common on site; 1 kg/cm² = 0.980665 bar. psi is the US unit; 1 bar = 14.504 psi.
mmH₂O (millimetres of water column) is used for low pressures (fans, flues, filter differentials); 1 mbar ≈ 10.2 mmH₂O.
Accuracy and currency are not guaranteed; use the current edition of the standard for design and purchasing decisions. How the library is compiled →