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CONVERSION FACTORS - Metric to Imperial - and Imperial to Metric. Convert
from a variety of metric and imperial units one to the other, change US Gallons to liters, litres to pints or inches to centimeters. Kilograms and pounds and many more. - Remember to bookmark this page
Length and Distance - Area - Volume - Capacity - Mass and Weight - US and Imperial measures - Velocity - Fuel Consumption - Force - Temperature conversion - SI Units - Numerical Prefixes - Power Notation - Clothes Sizes - Paper sizes - Nautical miles and Knots - Archaic Measures - Apothecaries Weight - Pressure - Torque - Useful Symbols - Keyboard Shortcuts - Alcohol Measures - Latin Phrases - Equinoxes and Solstices - Fractions to Decimal - Miscellaneous Information -
GENERAL CONVERSION FORMULAE
From To Multiply by inches millimetres 25.4 millimetres inches 0.0394 inches centimetres 2.54 centimetres inches 0.3937 feet metres 0.3048 metres feet 3.281 yards metres 0.9144 metres yards 1.094 miles kilometres 1.609 kilometres miles 0.6214 sq inches sq centimetres 6.452 sq centimetres sq inches 0.155 sq metres sq feet 10.76 sq feet sq metres 0.0929 sq yards sq metres 0.8361 sq metres sq yards 1.196 sq miles sq kilometres 2.589 sq kilometres sq miles 0.3861 acres hectares 0.4047 hectares acres 2.471 cu inches cu centimetres 16.39 cu centimetres cu inches 0.06102 cu feet cu metres 0.02832 cu metres cu feet 35.315 cu yards cu metres 0.7646 cu metres cu yards 1.308 cu inches litres 0.01639 litres cu inches 61.03 pints litres 0.5682 litres pints 1.76 US pints litres 0.47311 litres US pints 2.114 US gallon liters 3.785 gallons litres 4.546 litres US gallons 0.2642 litres gallons 0.22 grains grams 0.0648 grams grains 15.43 ounces grams 28.35 grams ounces 0.03527 pounds grams 453.6 grams pounds 0.002205 pounds kilograms 0.4536 kilograms pounds 2.205 tons kilograms 1016.05 kilograms tons 0.0009842
LINEAR MEASURE
From To Multiply by inches millimetres 25.4 millimetres inches 0.0394 inches centimetres 2.54 centimetres inches 0.3937 feet metres 0.3048 metres feet 3.281 yards metres 0.9144 metres yards 1.094 miles kilometres 1.609 kilometres miles 0.6214 nautical miles kilometres 1.852 nautical miles miles 1.150779 1 centimetre = 10 mm
1 decimetre = 10 cm
1 metre = 100 cm
1 kilometre = 1,000 m1 foot = 12 inches
1 yard = 3 feet
1 (statute) mile= 1,760 yards
1 int. nautical mile= 1.150779 miles
AREA From To Multiply by sq inches 
sq millimetres 645.16 sq millimetres sq inches 0.001550 sq inches sq centimetres 6.452 sq centimetres sq inches 0.155 sq feet sq centimetres 929.03 sq centimetres sq feet 0.001076 sq metres sq feet 10.76 sq feet sq metres 0.0929 sq yards sq metres 0.8361 sq metres sq yards 1.196 sq miles sq kilometres 2.5899 sq kilometres sq miles 0.3861 sq miles hectares 258.999 hectares sq miles 0.0038612 sq miles acres 640 acres sq miles 0.0015625 acres sq metres 4046.86 sq metres acres 0.000247 acres hectares 0.4047 hectares acres 2.471
1 square foot = 144 sq. in.
1 square yard = 9 sq. ft
1 acre = 4,840 sq. yd
1 square mile =
640 acres
| VOLUME Why not bookmark this page? | |||
| From | To | Multiply by | |
| cu inches | |
cu centimetres | 16.39 |
| cu centimetres | |
cu inches | 0.06102 |
| cu inches: | |
cu decimetres | 16.387 |
| cu feet | |
cu metres | 0.02832 |
| cu metres | |
cu feet | 35.315 |
| cu feet | |
cu inches | 1,728 |
| cu feet | |
cu decimetres | 28.316 |
| cu yards | |
cu metres | 0.7646 |
| cu metres | |
cu yards | 1.308 |
| cu inches | |
litres | 0.01639 |
| litres | |
cu inches | 61.03 |
1 cubic metre = 1,000,000 cu. cm
| CAPACITY | |||
| From | To | Multiply by | |
| fluid ounce | |
litres | 0.0284 |
| fluid ounce | |
cu inches | 1.8047 |
| US fluid ounce | |
litres | 0.0296 |
| US fluid ounce | |
cu inches | 1.878 |
| gills | |
litres | 0.1421 |
| pint | |
cu inches | 34.68 |
| pints | |
litres | 0.568 |
| litres | |
pints | 1.7606 |
| US pints | |
liters | 0.4731 |
| liters | |
US pints | 2.114 |
| US pints | |
cu inches | 28.88 |
| cu inches | |
US pints | 0.0347 |
| quarts | |
litres | 1.136 |
| US quarts | |
liters | 0.9463 |
| gallons | |
litres | 4.546 |
| US gallons | |
litres | 3.785 |
| peck | |
litres | 9.092 |
| bushel | |
liters | 36.4 |
| US barrels | |
cubic metres | 0.159 |
1 US pint = 16 fluid oz
1 gill = 5 fluid oz
1 pint = 20 fluid oz
1 quart = 2 pints
1 gallon = 4 quarts
1 peck = 2 gallons
1 bushel = 4 pecks
1 centilitre = 10 ml = 0.018 pint
1 decilitre = 10 cl = 0.176 pint
1 litre = 1000 ml = 1.76 pints
1 litre = 1 cubic decimetres
1 decalitre = 10 l = 2.20 gallons
1 hectolitre = 100 l = 2.75 bushels
1 kilolitre = 1,000 l = 3.44 quarters
The
decalitre is sometimes spelled dekalitre
MASS and WEIGHT - Commonly used values |
|||
| From | To | Multiply by | |
| grams | |
grains | 15.43 |
| grains | |
grams | 0.0648 |
| ounces | |
grams | 28.349 |
| grams | |
ounces | 0.03527 |
| pounds | |
grams | 453.59 |
| grams | |
pounds | 0.002205 |
| pounds | |
kilograms | 0.45359 |
| kilograms | |
pounds | 2.205 |
| tons | |
kilograms | 1016.05 |
| kilograms | |
tons | 0.0009842 |
| tons | |
tonnes | 1.016 |
| tonnes | |
tons | 0.9842 |
stones:
kilograms = 6.350
quarters: kilograms = 12.700
centals: kilograms = 45.359
hundredweights: kilograms = 50.802
1
milligram = 0.015 grain
1 centigram = 10 mg = 0.154 grain
1 decigram = 100 mg = 1.543 grains
1 gram = 1000 mg = 15.43 grains
1 decagram = 10 g = 5.64 drams
1 hectogram = 100 g = 3.527 ounces
1 kilogram = 1,000 g = 2.205 pounds
1 tonne (metric ton) = 0.9842 (long) ton= 1,000 kg
the decagram is sometimes spelled dekagram
Force |
|||
| From | To | Multiply by | |
| kilonewtons | |
pounds (f) | 224.8 |
| pounds (f) | |
kilonewtons | 0.004448 |
| kilonewtons | |
tons (f) | 0.10036 |
| tons (f) | |
kilonewtons | 9.96401 |
| kilonewtons | |
kilograms (f) | 102.0 |
| kilograms (f) | |
kilonewtons | 0.009807 |
|
Fuel consumption |
|||
| From | To | Multiply by | |
| miles/gallon | |
kilometres/litre | 0.3539 |
| kilometres/litre | |
miles/gallon | 2.825 |
| miles/US gallon | |
kilometers/liter | 0.4250 |
| kilometers/liter | |
miles/US gallon | 2.353 |
| gallons/mile | |
litres/ kilometre | 2.825 |
| litres/ kilometre | |
gallons/mile | 0.3540 |
American Dry Measurements |
|||
| From | To | Multiply by | |
| pint | |
cu. in. | 33.60 |
| pint | |
liter | 0.550 |
| quart | |
liters | 1.101 |
| peck (8 quarts) | |
liters | 8.81 |
| bushel (4 pecks) | |
liters | 35.3 |
American to Imperial Capacity measurements |
|||
| From | To | Multiply by | |
| US fluid ounce | |
fluid ounce | 1.0408 |
| fluid ounce | |
US fluid ounce | 0.9608 |
| US pint | |
pint | 0.8327 |
| pint | |
US pint | 1.201 |
| US gallon | |
gallon | 0.8327 |
| gallon | |
US gallon | 1.201 |
Velocity |
|||
| From | To | Multiply by | |
| miles/hour | |
kilometres/hour | 1.609 |
| kilometres/ hour | |
miles/hour | 0.6117 |
| feet/second | |
metres/second | 0.305 |
| metres/second | |
feet/second | 3.279 |
| feet/minute | |
metres/second | 0.00508 |
| metres/ second | |
feet/minute | 196.74 |
| feet/minute | |
metres/minute | 0.305 |
Pressure Why not bookmark this page? |
|||
| From | To | Multiply by | |
| pounds/in2 | |
kilonewtons/m2 | 6.895 |
| pounds/in2 | |
Atmosphere | 0.0680 |
| pounds/in2 | |
Kilograms/m2 | 9.80665 |
| Pascal | |
pounds/in2 | 14.696 |
| Pascal | |
feet/second | 3.279 |
| Pascal | |
Kilograms/m2 | 703.07 |
| Kilograms/m2 | |
pounds/in2 | 0.001422 |
| Kilograms/m2 | |
Atmosphere | 9.68X10-5 |
| Kilograms/m2 | |
Pascal | 9.8067 |
| Atmosphere | |
pounds/in2 | 14.696 |
| Atmosphere | |
Pascal | 101,325 |
| Atmosphere | |
Kilograms/m2 | 10,332 |
| newton/m2 | |
pascal | 1.000 |
| kilopascal | |
kilonewton/m2 | 1.000 |
Torque |
|||
| From | To | Multiply by | |
| Newton Metres | |
Foot Pound | 0.7376 |
| Newton Metres | |
Kilogram Force Metres | 0.1020 |
| Foot Pounds | |
Newton Metres | 1.356 |
| Foot Pounds | |
Kilogram Force Metres | 0.1383 |
| Kilogram Force Metres | |
Foot Pound | 7.233 |
| Kilogram Force Metres | |
Newton Metres | 9.807 |
| Inch Pound | |
Foot Pound | 12 |
Temperature Conversion
F to C first deduct 32, Multiply by 5 then Divide by 9 C to F Multiply by 9, Divide by 5, Add 32
Click on the thumbnail for a larger image
Expanded Body Temperature Range
Avoirdupois Weight is the system of weights used in most
English Speaking countries.1 dram= 1.772 grams
1 ounce = 16 drams
1 pound = 16 ounces= 7,000 grains
1 stone = 14 pounds
1 hundredweight = 112 pounds (US 100 pounds)
1 short ton= 0.907 tonne = 2,000 pounds
1 (long) ton = 20 hundredweight = 2,240 poundsTroy Weight (Precious Metals)
24 grains = 1 pennyweight
20 pennyweights = 480 grains = 1 ounce
12 ounces = 5760 = grains = 1 pound
Apothecaries' Weight
20 grains = 1 scruple
3 scruples = 1 dram
8 drams = 1 ounce
12 ounces = 5760 grains = 1 pound
Archaic and less frequently used linear measure
3 hands = 1 foot
1 span = 9 inches
1 rod, pole or perch = 16.5 feet
40 poles = 1 furlong
10 chains* = 1 furlong
8 furlongs = 1 mile
320 rods = 1 mile
3 miles = 1 league*The chain used to be exactly that, a chain of a standard length. The acre is equal to ten square chains - originally measured as an area of one furlong (furrow long) by one chain wide.
Nautical miles and Knots
10 cables = 1 nautical mile
6080 feet = 1 nautical mile
1 Knot = 1.151 mph
The nautical mile is defined as the average distance on the earth's surface
corresponding to an angle of 1 minute of arc. A speed of one nautical miles
per hour is known as the knot. The International Nautical mile is accepted
by the Royal Navy (1970) as being equal to 1852 metres. As the earth is
not a perfect sphere, but is an oblate spheroid, the distance corresponding
to one minute of arc will vary depending on location. The value of 6080 feet
is a compromise and is the value as measured at some point in the English
channel.
Depth
6 feet = 1 fathom
15 fathom = 1 shackle
Power
Horsepower - 745.7 Watts (SI) or 735.5 Watts (Continental Europe)
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