Conversion Tables

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Common Conversions for Absolute Pressures and Flow Rates

Common Conversions for Absolute Pressures and Flow Rates These conversion tables can be particularly helpful when comparing specifications for pumps from different manufacturers. Download the Adobe Acrobat ® version and you'll have these tables available at all times.

CONVERSION FACTORS OF ABSOLUTE PRESSURES IN VARIOUS UNITS

Example: To transform 10 mbar to torr:
10 mbar x 0.75 [conversion factor] = 7.5 torr

	= mbar	= bar	= torr	= in. Hg	= psi (lb/in2)	= atm	= Pa
mbar x	1	1x10-3	0.75	2.953x10-2	1.45x10-2	9.869x10-4	1x102
bar x	1x103	1	7.5x102	29.53	14.5	0.987	1x105
torr x	1.333	1.333x10-3	1	3.937x10-2	1.934x10-2	1.316x10-3	1.33x102
inch Hg x	33.86	3.386x10-2	25.4	1	0.491	3.342x10-2	3.386x103
psi (lb/in2) x	68.95	6.895x10-2	51.71	2.036	1	6.805x10-2	6.895x103
atm x	1.013x103	1.013	7.6x102	29.92	14.7	1	1.013x105
Pa x	0.01	1x10-5	7.5x10-3	2.953x10-4	1.45x10-4	9.869x10-6	1

CONVERSION FACTORS OF FLOW RATES IN VARIOUS UNITS

	= m3/h	= m3/min	= m3/sec	= l/min	= cfm	= gpm
m3/h x	1	1.667x10-2	2.778x10-4	16.67	0.588	4.403
m3/min x	60	1	1.667x10-2	1x103	35.28	2.642x102
m3/sec x	3,600	60	1	6x104	2.117x103	1.585x104
l/min x	6x10-2	1x10-3	1.667x10-5	1	3.528x10-2	0.264
cfm x	1.699	2.832x10-2	4.72x10-4	28.32	1	7.481
gpm x	0.227	0.378	6.306x10-5	3.784	0.133	1