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Metric Equivalents and Conversion Tables


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Metric conversion Tables and Equivalents

GENERAL

Temperature

Degrees Celsius to Fahrenheit multiply by 1.8 (or 9/5) and add 32
Degrees Fahrenheit to Celsius subtract 32 and multiply by 0.55 (or 5/9)

Speeds

Mph 10 203040506070 8090100
Kph1632486480 96112128144160


To convert
Length, distance & area

Inches to centimetres, multiply by 2.54 1 in. = 2.54 cm
Centimetres to inches, multiply by 0.39 1 cm = 0.3937 in
Feet to metres, multiply by 0.3 1 ft = 0.3048 meter
Metres to feet, multiply by 3.28 1 m =3.280 ft
Yards to metres, multiply by 0.91 1 yd = 0.914 meter
Metres to yards, multiply by 1.09 1 m = 1.0936 yd
Miles to kilometres, multiply by 1.61 1 mile = 1.609 Km = 5280 ft = 1760 yds
1 nautical mile = 6076.2 ft = 2025.4 yds
Kilometres to miles, multiply by 0.62 1 Km = 0.621 mile = 5/8 mile
Acres to hectares, multiply by 0.4 1 acre = 0.405 hectare = 43,560 sq. ft.
= 4,840 sq. yds. = 4,046.9 sq. meters
Hectares to acres, multiply by 2.47 1 hectare =2.47 acres

Inches to millimeters

inchmminchmm
1 /4 (0.250) 6.3500 11/16 (0.6875) 17.4625
3/4 (0.750) 19.0500 13/16 (0.8125) 20.6375
1/2 (0.500) 12.700 1/32 (0.0313) 0.7938
1/3 (0.33) 8.46 3/32 (0.0938) 2.3813
2/3 (0.66) 16.93 1 inch 25.4
1/8 (0.125) 3.1750 1 foot 30 cm
3/8 (0.375) 9.5250 1 meter 3.28 ft
5/8 (0.625) 15.8750 0.025 in 0.6
7/8 (0.875) 22.2250 0.049 in 1.0
1/16 (0.0625) 1.5875 0.120 in 3.0
3/16 (0.1875) 4.7625 0.170 in 4.3
5/16 (0.3125) 7.9375    
7/16 (0.4375) 11.1125    
9/16 (0.5625) 14.2875    


Weight

To convert ounces to grams, multiply by 28.35 1 oz =28.349 gm
To convert grams to ounces, multiply by 0.035 1 gm = 0.03527 oz
Pounds to kilograms, multiply by 0.45 1 lb =0.45359 kg
Kilograms to pounds, multiply by 2.21 1 kg = 2.2046 lb
British ton to kilograms, multiply by 1016 1 kg = 2.2046 lb
British ton to kilograms, multiply by 1016 1 ton = 1,016 kg = 2240 lbs = 1.016 tonne
US tons to kilograms, multiply by 907 1 tonne = 1000 kg = 2200.6 lbs = 0.9842 ton

Volume

To convert imperial gallons to litres multiply by 4.55 1 imp gall = 4.546 liters = 10 lbs.
To convert imperial gallons to litres multiply by 0.22 1 imp liter = 0.21996 gall
US gallons to litres multiply by 3.79 1 US gall = 3.7854 liters =8.33 lbs
Litres to US gallons multiply by 0.261 US liter = 0.26417 gall
US gallons to Imp gallons multiply by 0.8333  
Imp gallons to US gallons multiply by 1.2009  

Metric Equivalents

Power-energy-force-pressure-viscosity
1 watt = 1 joule per second
1 watt = 0.738 foot pound force per sec.
1 watt = 0.057 btu/min
1 watt = 1 newton meter per sec
1 kilowatthour (KWh) = 3.6 megajoules
1 Btu = 1055.056 joules
1 ft.lb/s2 = 0.138kg.m/s2
1 kg.ms2 = 1 newton
1 atmosphere = 101.325 kilopascals (kPa)
1 atmosphere = 1.0133 bars
1 atmosphere = 14.70 psi
1 atmosphere = 760mm Hg
1 newton per sq.m. = 1 pascal
1 centipoise = 1 centistoke x density
1 centistoke = 1 x 10-6m2/s
1 centistoke = 1 x 10-3 pascal-seconds

Common Conversion Factors

Quantity SI Unit Other Unit Conversion Factor
Energy joule calorie
erg
1 cal = 4.184 J
1 erg = 10-7 J
Force newton dyne 1 dyn = 10-5 N
Length metre ångström 1 Å = 10-10 m = 10-8 cm = 10-1 nm
Mass kilogram pound 1 lb = 0.453592 kg
Pressure pascal bar
atmosphere
mm Hg
lb/in2
1 bar = 105 Pa
1 atm = 1.01325 x 105 Pa
1 mm Hg = 133.322 Pa
1 lb/in2 = 6894.8 Pa
Temperature kelvin Celsius
Fahrenheit
1°C = 1 K
1°F = 5/9 K
Volume cubic metre litre
gallon (U.S.)
gallon (U.K.)
cubic inch
1 L = 1 dm3 = 10-3 m3
1 gal (U.S.) = 3.7854 x 10-3 m3
1 gal (U.K.) = 4.5641 x 10-3 m3
1 in3 = 1.6387 x 10-6 m3


Capacity(US) Linear dimensional Mass
1 ml = 0.034 oz
1 oz = 29.573 ml
1 ml = 0.270 dram
1 dram = 3.697 ml
1 liter = 1.07 quarts
1 quart = 0.946 liter
1 liter = 0.264 gallon
1 gallon = 3.785 liters
1 cm = 0.394 in
1 inch = 2.540 cm
1 meter = 3.281 ft
1 ft = 0.305 m
1 meter = 1.094 yds
1 yard = 0.914 meter
1 kilometer = 0.621 mile
1 kilometer = 5/8 mile
1 mile = 1.609 km
1 gram = 15.432 grains
1 grain = 0.065 gram
1 gram = 0.035 oz
1 oz = 28.349 gram
1 kilogram = 2.205 lb
1 lb = 0.454 kg



Specific Conversion Factor Tables

Volume

Multiply the left column by the middle column to get values for right column
and divide right column by middle column to get values for left column

MultiplyTo get
To getDivide
Cubic cm (cc)
Oz (fluid)
Cubic ft.
Cubic ft.
Gal
Gal
Gal
Cubic meters
1
29.57
7.48
0.0283
128
3.785
0.8333
1000
ml.
ml.
ml.
m3
Oz (fluid)
Liters
Imp. Gal.
liters

Conversion Tables
Horsepower / Watts

Multiply the left column by the middle column to get values for right column
and divide the right column by the middle column to get values for left column

MultiplyTo get
To getDivide
Hp
Hp
Hp
Hp
Watts
Watts
lb-ft.
oz in.
oz-in.
oz-in.
Gauss
0.746
42.44
396000
1.014
0.7376
44.25
0.1368
0.072
70,6000
0.00706
0.0001
Kw
Btu / min.
lb.in / min.
metric hp
lb ft, / sec.
lb ft, / min
. kg-m
kg-cm.
dyne-cm.
Nm.
Tesla

Conversion Tables
Pressure / Vacuum

Multiply the left column by the middle column to get values for right column
and divide the right column by middle column to get values for left column

MultiplyTo get
To getDivide
Atm
Atm
Atm
Atm
Atm
Atm
Bar
Bar
Bar
ft. H2O
ft. H2O
in. Hg
in. Hg
in. Hg
kPa
KPa
KPa
Psi
33.9
760
1033.2
14.70
1.013
101.3
14.5
0.9869
100
0.4335
0.8826
0.4912
25.4
3.386
0.01
0.1450
7.5
0.0703
ft. H2O
mm Hg
g / cm2
Psi
Bar
KPa
Psi
Atm
KPa
Psi
in. Hg
psi
mm Hg
kPa
dyne / cm2
Psi
mm Hg
kg/ cm 3

Conversion Tables
Flowrate

MultiplyTo get
To getDivide
cc / min.
cfm (ft3 / min)
cfm
cfh (ft3 / hr)
cfh
GPH
GPH
GPM
GPM
oz / min.
1
28.31
1.699
472
0.125
63.1
0.134
0.227
3.785
29.57
ml / min
L / min
m3 / hr
ml / min
GPM
ml / min
cfh
m3 / hr
L / min
ml / min

Conversion Tables
Mass

Multiply the left column by the middle column to get values for right column
and divide the right column by middle column to get values for left column

MultiplyTo get
To getDivide
dram
dram
dram
dram
60
0.1371
0.008571
3.88794
grains
oz
lb
grams
lb
lb
lb
lb
5760
13.1657
0.822857
373.242
grains
oz
lb
grams
oz
oz
oz
oz
480
1.09714
0.068571
31.1035
grains
oz
lb
grams
drams
drams
drams
drams
27.344
0.0625
0.003906
1.77185
grains
oz
lb
grams
lb
lb
lb
oz
7000
16
453.592
437.5
grains
oz
grams
grains
oz
oz
carats
carats
0.0625
28.3495
3.0865
0.2
lb
grams
grains
grams
grams
grams
lb
oz
15.432
0.0353
0.4536
28.35
grains
oz
Kg
grams




Signature: Dhanlal De Lloyd, Chem. Dept, The University of The West Indies, St. Augustine campus
The Republic of Trinidad and Tobago.
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