|
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 |
| 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
|
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
| Multiply | → | To get |
| To get | ← | Divide |
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
| Multiply | → | To get |
| To get | ← | Divide |
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
| Multiply | → | To get |
| To get | ← | Divide |
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
| Multiply | → | To get |
| To get | ← | Divide |
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
| Multiply | → | To get |
| To get | ← | Divide |
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
|
