Conversion Table for Units of Pressure

bar	kPa	psi	m H2O	ft H2O	atm	millibar	inHg
1	100	14.504	10.197	33.456	0.98692	1000	29.529
0.010	1	0.14504	0.10197	0.33455	0.0098692	10	0.2953
0.068947	6.8957	1	0.70305	2.3067	0.068046	68.948	2.036
0.098068	9.8068	1.4223	1	3.2808	0.096788	98.068	2.8959
0.029891	2.9891	0.43353	0.3048	1	0.029499	29.891	0.88267
1.0133	101.33	14.696	10.332	33.899	1	1013.3	29.921
0.001	0.1	0.014504	0.010197	0.033455	0.00098692	1	0.02953
0.033864	3.3864	0.49115	0.34566	1.1329	0.033421	33.864	1
Example of use: To convert millibars to psi, find the 1 under the millibar column. The 1 marks the row that contains multipliers to convert millibars to other units. Follow the row to the psi column. The multiplier is 0.014504. Thus you would mulitiply the millibar value by 0.014504 to convert it to psi. Note that factors related to head of water are derived from water at a temperature of 4 degrees C ( 39.2 degrees F).