Conversion Tables

Malcolm Thompson Pumps provides a range of pump tools including Pumping Formulas, Conversion Tables and a Glossary of Terms which can be used to assist with pump selection. To best ensure your pump choice meets your requirements, please contact one of our experienced customer service team members on 1800 439 607 who can assist with pump selection, specifications and a competitive quote.

Please click on the type of conversion you require below (eg. Area, Volume, etc). The associated conversion table will then be displayed.

These conversion equivalents are based generally on A.S. 1376 – 1974. In some cases the degree of rounding has been adjusted.

Length

Millimeter (mm) Centimeter (cm) Meter (m) Inch (in) Foot (ft) Yard (yd)
1 0.1 0 0.04 0 0
10 1 0.01 0.39 0.03 0.01
1000 100 1 39.37 3.28 1.09
25.4 2.54 0.03 1 0.08 0.03
304.8 30.48 0.3 12 1 0.33
914.4 91.44 0.91 36 3 1

Area

Square mm Square cm Square meter Square inch Square foot Square yard
1 0.01 39609 1.55 * 10-3 1.076 * 10-5 1.196 * 10-6
100 1 39548 0.16 1.076 * 10-3 1.196 * 10-4
106 10 000 1 1550 10.76 1.2
645.16 6.45 6.452 * 10-4 1 6.944 * 10-3 7.716 * 10-4
92 903 929.03 0.09 144 1 0.11
836 127 8361.27 0.84 1296 9 1

Volume

Cubic mm Cubic cm Cubic meter Cubic inch Cubic foot Cubic yard
1 0 109 6.1 * 10-5 3.531 * 10-8 1.308 * 10-9
1000 1 39609 0.06 3.531 * 10-5 1.308 * 10-6
109 39609 1 61 024 35.31 1.31
16 387 16.39 1.639 * 10-5 1 5.787 * 10-4 2.146 * 10-5
2.832 * 107 2.732 * 104 0.03 1728 1 0.04
7.646 * 108 7.646 * 105 0.76 0.76 27 1

Liquid Measure

Cubic meter Litre Millilitre Imp gallon U.S gallon Cubic foot
1 1000 106 220 264.2 35.31
0 1 1000 0.22 0.26 0.04
39609 0 1 2.2 * 10-4 2.642 * 10-4 3.53 * 10-5
0 4.55 4546 1 1.2 0.16
0 3.79 3785 0.83 1 0.13
0.03 37.31 28 317 6.23 7.48 1

Velocity

m per sec foot per sec m per min foot per min km per hr mile per hr
1 3.28 60 196.85 3.6 2.24
0.31 1 18.29 60 1.1 0.68
0.02 0.06 1 3.28 0.06 0.04
0.01 0.02 0.31 1 0.02 0.01
0.28 0.91 16.67 54.68 1 0.62
0.45 1.47 26.82 88 1.61 1

Mass

Kilogram Pound Hundredweight Tonne Ton U.S. ton
1 2.21 0.02 0 9.84 * 10-4 0
0.45 1 0.01 4.54 * 10-4 4.46 * 10-4 5.0 * 10-4
50.8 112 1 0.05 0.05 0.06
1000 2204.6 19.68 1 0.98 1.1
1016 2240 20 1.02 1 1.1
907.2 2000 17.86 0.91 0.98 1

Mass Flow Rate

kg per sec pound per sec kg per hr pound per hr ton per hr tonne per hr
1 2.21 3600 7936.64 3.54 3.6
0.45 1 1633 3600 1.61 1.63
2.78 * 10-4 6.12 * 10-4 1 2.21 9.84 * 10-4 0
1.26 * 10-4 2.78 * 10-4 0.45 1 4.46 * 10-4 4.54 * 10-4
0.28 0.62 1016 2240 1 1.02
0.28 0.61 1000 2240.6 0.98 1

Volumetric Rate of Flow

Litre per sec Litre per min Cubic m per hr Cubic foot per hr Cubic foot per min Imp gallon per min U.S.galon per min U.S barrel per day
1 60 3.6 127.13 2.12 13.2 15.85 543.44
0.02 1 0.01 2.12 0.04 0.22 0.26 90.57
0.28 16.67 1 35.31 0.59 3.67 4.4 150.96
0.01 0.47 0.03 1 0.02 0.1 0.13 4.28
0.47 28.32 1.7 60 1 6.23 7.48 256.48
0.08 4.55 0.27 9.63 0.16 1 1.2 41.18
0.06 3.79 0.23 8.02 0.13 0.83 1 34.29
0 0.11 0.01 0.23 0 0.02 0.03 1

Pressure & Liquid Head

  newton per m2 kilopascal bar kg force per cm2 pound force per inch2 foot of water meter of water milimeter of water inch of mercury
newton per m2 1 0 105 1.02 * 105 1.45 * 10-4 3.35 * 10-4 1.02 * 10-4 0.01 2.95 * 10-4
kilopascal 1000 1 0.01 1.02 * 10-2 0.15 0.34 0.1 7.5 0.3
bar 100000 100 1 1.02 14.5 33.52 10.2 750.1 29.53
kg force per cm2 98067 98.07 0.98 1 14.22 32.81 10 735.6 28.96
pound force per inch2 9895 6.9 0.07 0.07 1 2.31 0.7 51.72 2.04
foot of water 2984 2.98 0.03 0.03 0.43 1 0.31 22.42 0.88
meter of water 9789 9.79 0.1 0.1 1.42 3.28 1 73.42 2.89
mm of mercury 133.3 0.13 0 0 0.02 0.05 0.01 1 0.04
inch of mercury 3386 3.39 0.03 0.03 0.49 1.13 0.35 25.4 1

Power

Watt kg force m per sec Metric horsepower Foot pound force per sec Horsepower
1 0.1 0 0.74 0
9.81 1 0.01 7.23 0.01
735.5 75 1 542.48 0.99
1.36 0.14 1.84 * 10-3 1 1.82 * 10-3
745.7 76.04 1.01 550 1

Force

Newton Kilonewton Kilogram force (kilopond) Pound force
1 0 0.1 0.23
1000 1 101.97 224.81
9.81 0.01 1 2.21
4.45 0 0.45 1

Energy, Work and Heat

Joule Kilojoule Megajoule Foot pound force British thermal unit Therm Kilowatt hour
1 0 39609 0.74 9.48 * 10-4 9.48 *10-9 2.78 * 10-7
1000 1 0 737.56 0.95 9.48 * 10-6 2.78 * 10-4
106 1000 1 737 562 947.82 9.48 * 10-3 0.28
1.36 1.36 * 10-3 1.36 * 10-6 1 1.28 * 10-3 1.28 * 10-8 3.7 * 10-7
1055.1 1.06 1.05 * 10-3 778.17 1 39578 2.931 * 10-4
1.055 * 108 105 510 105.51 7.78 * 107 100 000 1 29.31
3.6 * 106 3600 3.6 2.65 * 106 3412.1 0.03 1

Rules

1 kilometer 1000 meters = 0.62137 miles
1 mile 1609.34 meters = 1.60934 kilometers
1 acre 4046.86 m squared = 0.404686 hectare
1 hectare 1.000 *10 000 m squared = 2.471 acre
1 U.S. Barrel 42 U.S. gallons (petroleum measure) = 34.97 Imp. Gallons = 0.159 m3
1 litre 10 000 000 mm cubed = 10 000 cm3 or 1 cubic decimeter
1.76 U.K pints = 2.133 U.S. pints.
1 Pascal 1 newton per square meter
1 millimeter Hg is also called “torr”
1 joule 1 newton meter
1 watt 1 joule per sec = 1 newton meter per sec
Density 1 gram per cm3 = 1000 kg per m3 = 0.0361 pounds per inch3
1 kg per m3 = 0.001 grams per m3 = 0.0624 pounds per foot3
Specific Volume 1 cm3 per gram = 0.001 m3 per kg = 27.68 inch3 per pound
1 m3 per kg = 1000 cm3 per gram = 16.0185 foot3 per pound.
International standard atmosphere (1atm) = 101 325 pascals or 1.013 25 bar. This equals 1.033 23 kilogram force per cm2 or 14.6959 pound force per inch3
In meteorology 1 millibar = 100 pascal