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Conversion Tools

Use our examples below to convert pressure, flow, force or heat.

Convert various units of pressure using the below table:

For example, If you would like to know what the equivalent of 1 BAR is in Inch Hg., you would go to the ‘BAR’ row (brown) and then match it up with the Inch ‘Hg’ column (yellow). 1 BAR = 29.5300 Inch Hg.

From / ToPSIKg / cm2BARPascalmm HgInch HgInch H2Ocm water
PSI10.07030.06896894.757351.71492.036027.707670.3089
Kg / cm214.222310.98079.8067 E+04735.559228.9590394.09461000.0275
BAR14.50381.019711.000 E+05750.061729.5300401.86471019.7443
Pascal0.00011.020 E-051.000 E-0517.501 E-032.953 E-044.019 E-031.020 E-02
mm Hg0.01930.00130.0013133.322410.03940.53581.3595
Inch Hg0.49120.03390.03393386.388225.4000113.608734.5325
Inch H2O0.03610.00250.0025248.84001.86650.073512.5375
cm water0.01420.00100.001098.06.380.73550.02900.39411

Convert various units of flow using the table below:

For example, if you would like to know what the equivalent of 1 cubic feet per minute (CFM) is in liters per minute (L/Min), you would find the “Cubic Feet per Min” row (brown) and then match it up with the “Liters per Min” column (yellow)

1 Cubic Feet per Min (CFM) = 28.3168 Litres per Min (L/Min)

From / ToCubic Feet per Min.Cubic Meter per Min.Gallons per Min.Litres per Min.
Cubic Feet per Min.10.02837.480528.3168
Cubic Meter per Min.35.31471264.17211000
Gallons per Min.0.13370.003813.7854
Litres per Min.0.03530.0010.26421

Convert various units of flow using the table below:

For example, If Suzie would like to know what the equivalent of 1 Ounce (oz) is in Pounds (lbs). She would look for the ‘Ounce’ row (brown) and then match it up with the ‘Pound’ column (yellow).

1 Ounce (oz) = 0.0625 Pounds (lbs)

From / ToPoundOunceKilogram
Pound1160.4536
Ounce35.314710.0283
Kilogram2.204635.273961951

Convert various units of pressure using the table below:

For example, if you would like to know what the equivalent of 1 WATT is in BTU/min, you would find the “Watt” row (brown) and then match it up with the “BTU/Min” column (yellow).

1 Watt = 0.0569 BTU/Min.

From / ToBTU / Hr.BTU / Min.Ton (Refrigeration)Kilocalorie / Sec.Watt
BTU / Hr.10.01678.33E-057.00E-050.2928
BTU / Min.6010.0050.004217.5686
Ton (Refrigeration)12000238.099210.84003.514E+03
Kilocalorie / Sec.1.429E+042001.190514.183E+03
Watt3.41520.05692.846E-042.391E-041

Below is an example demonstrating how you can easily calculate the air consumption at different inlet pressures. If you need assistance, call us at +1-705-770-4455 or click here to email an Application Engineer.

EXAMPLE: A Model 7504 Vortex Tube consumes 4 SCFM @ 100 PSIG (113 SLPM @ 6.89 BAR). To calculate the airflow with an inlet pressure of 60 PSIG (4.1369 BAR), follow the below steps:

1 Atmosphere (ATM) = 14.7 (PSI)

1 (SCFM) = 28.3168 (SLPM)

1 (PSI) = .0689 (BAR)

STEP 1: Determine the ratio of absolute inlet pressures.

EnglishMetric
60 (PSIG) + 14.7 = 74.7
100 (PSIG) + 14.7 = 114.7
74.7 divided by 114.7 = 0.6512 is the Ratio
4.1369 (BAR) + 1.0135 = 5.1504
6.8948 (BAR) + 1.0135 = 7.9083
5.1504 divided by 7.9083 = 0.6512 is the Ratio

STEP 2: Multiply the above Ratio by the known factor (4 SCFM).

EnglishMetric
4 (SCFM) x 0.6512 = 2.6048 SCFM
Therefore Model 7504 Vortex Tube operating at 60 PSIG will consume just 2.6048 SCFM.
113 (SLPM) x 0.6512 = 73.5856
Therefore Model 7504 Vortex Tube operating at 4.1369 BAR will consume just 73.585 SLPM.
Air Flow Schedule
Use the tables to determine the Pounds Per Square Inch drop per 100 feet of schedule 40 steel pipe