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Conversion Tables

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.

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9 + 7 =

Conversion Factors of Absolute Pressures in Various Units

Example – To transform 10 mbar to torr: 10 x 0.75 = 7.5 torr

= mbar = bar = torr = in. Hg = psi (lb/in2) = atm = Pa
mbar x 1 1 x 10-3 0.75 2.953 x 10-2 1.45 x 10-2 9.869 x 10-4 1 x 102
bar x 1 x 103 1 7.5 x 102 29.53 14.5 0.987 1 x 105
torr x 1.333 1.333 x 10-3 1 3.937 x 10-2 1.934 x 10-2 1.316 x 10-3 1.33 x 102
inch Hg x 33.86 3.386 x 10-2 25.4 1 0.491 3.342 x 10-2 3.386 x 103
psi (lb/in2) X 68.95 6.895 x 10-2 51.71 2.036 1 6.805 x 10-2 6.895 x 103
atm x 1.013 x 103 1.013 7.6 x 102 29.92 14.7 1 1.013 x 105
Pa x 0.01 1 x 10-5 7.5 x 10-3 2.953 x 10-4 1.45 x 10-4 9.869 x 10-6 1

Conversion Factors of Flow Rates in Various Units

= m3/h = m3/min = m3/sec = l/min = cfm = gpm
m3/h x 1 1.667 x 10-2 2.778 x 10-4 16.67 0.588 4.403
m3/min x 60 1 1.667 x 10-2 1 x 103 35.28 2.642 x 102
m3/sec x 3,600 60 1 6 x 104 2.117 x 103 1.585 x 104
l/min x 6 x 10-2 1 x 10-3 1.667 x 10-5 1 3.528 x 10-2 0.264
cfm x 1.699 2.832 x 10-2 4.72 x 10-4 28.32 1 7.481
gpm x 0.227 0.378 6.306 x 10-5 3.784 0.133 1