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Conversion Charts
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Weights |
| 1 gram |
0.03527 ounce |
| 1 ounce |
28.35 grams |
| 1 kilogram |
2.2046 pounds |
| 1 pound |
0.4536 kilogram |
| 1 metric ton |
0.98421 English ton |
| 1 English ton |
1.016 metric ton |
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Mass |
| 1 slug |
32.2 pounds mass = 14.606 kilograms |
| 1 pound mass |
453.6 grams |
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Force |
| 1 pound force |
1 slug x 1 foot sec/sec |
| 1 dyne |
1 gram x 1 centimeter sec/sec |
| 1 newton |
1 kilogram x 1 meter sec/sec |
| 1 pound force |
4,452 newtons |
| 1 newton |
100,000 dynes = 0.224 pounds force |
| 1 gram force |
980.6 dynes |
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Pressure |
| 1 atmosphere |
14.69 pounds/sq. inch = 29.92 in. of Hg |
| 1 atmosphere |
76 cm of Hg = 33.9 ft. of water |
| 1 in. Hg |
0.491 pounds/sq. inch |
| Water Pressure pounds/sq. inch |
head in ft. x 0.434 |
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METRIC SYSTEM PREFIXES |
| Mega |
1,000,000 |
| Kilo |
1,000 |
| Hecto |
100 |
| Deka |
10 |
| Deci |
0.1 |
| Centi |
0.01 |
| Milli |
0.001 |
| Micro |
0.000001 |
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Troy Weight |
| 24 grains |
1 pwt. |
| 20 pwt |
1 ounce |
| 12 ounces |
1 pound |
| Used for weighing gold, silver, and jewels |
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Liquid Measure |
| 4 gills |
1 pint |
| 2 pints |
1 quart |
| 4 quarts |
1 gallon |
| 31-1/2 gallons |
1 barrel |
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Dry Measure |
| 2 pints |
1 quart |
| 8 quarts |
1 peck |
| 4 pecks |
1 bushel |
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Length |
| 1 centimeter |
0.3937 inches = 0.0328 feet |
| 1 meter |
39.37 inches = 1.0936 yards |
| 1 kilometer |
0.62137 miles = 3280 feet |
| 1 inch |
2.54 centimeters |
| 1 foot |
0.3048 meters |
| 1 mil |
0.001 inch |
| 1 mile |
5280 feet=1760 yards=1.609 kilometers |
| 1 yard |
0.9144 meter |
| 1 dekameter |
1.9884 rods |
| 1 rod |
0.5029 dekameters |
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Square Measure |
| 1 sq. mile |
2.59 sq. kilometers |
| 1 circular mil |
0.7854 sq. mils |
| 1 sq. inch |
1,000,000 sq. mils |
| 1 sq. decimeter |
0.1076 sq. foot |
| 1 acre |
60 sq. rod |
| 1 sq. cm |
0.155 sq. inches |
| 1 sq. m |
1.196 sq. yard = 10.784 sq. ft |
| 1 sq. km |
0.386 sq. miles |
| 1 sq. inch |
6.452 sq. centimeters |
| 1 sq. foot |
929.03 sq. com = 0.092903 meters |
| 1 sq. yard |
0.8361 sq. meters |
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Time |
|
1 day |
86,400 seconds |
|
1 year |
8760 hours (approx.) |
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Angles |
|
1 circle |
2p radians = 360 degrees |
|
1 radian |
57.3 degrees |
| 1 degree |
0.01745 radians |
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Temperature Conversions |
| °C = 5/9(°F-32) |
| °F = 9/5 °C+32 |
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Work and Energy-Mechanical |
|
1 erg |
1 dyne x 1 centimeter |
|
1 joule |
1 newton x 1 meter = 105 dynes x 102 cm = 107 ergs |
| 1 ft lb |
1 pound force x 1 foot = 1.356 joules |
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Work and Energy-Electrical Equivalent |
| 1 joule |
1 watt x 1 second = 1 amp (dc) x 1 volt (dc) x 1 sec |
|
W (joules) |
½ L (henries) x 1 (amperes)2 |
| W (joules) |
½ C (farads) x E (volts) 2 |
| 1 kilowatt hour |
3,600,000 joules |
|
Work and Energy-Heat Equivalent |
| 1 Btu raises 1 pound of water 1°F |
| 1 gram calorie raises 1 gram of water 1°C |
| 1Btu = 252 Gram calories = 778 ft lb = 1055 joules |
| 1 horsepower hour = 2544 Btu's |
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POWER |
| 1 WATT |
1 joule/sec |
| 1 horsepower |
550 ft. lb/sec = 716 watts |
| 1 watt |
3.412 Btu/hr = 0.239 gram calorie/sec |
| P (watts) |
R (ohms) x I (amperes)2 |
| P (watts) |
E (volts)2 / R (ohms) |
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Avoirdupois Weight |
| 27-11/32 grains |
1 dram |
| 16 drams |
1 ounce |
| 16 ounces |
1 pound |
| 25 pound |
1 quarter |
| 4 quarters |
1 cwt |
| 2,000 pounds |
1 short ton |
| 2,240 pounds |
1 long ton |
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Imperial Liquid Measure |
| 1 U.S.gallon |
0.833 Imperial gallon |
| 1 U.S. gallon |
3.785 liters |
| 1 Imperial gallon |
1.201 U.S. gallon |
| 1 Imperial gallon |
4.546 liters |
| 1 liter |
0.264 U.S. gallon |
| 1 liter |
0.220 Imperial gallon |
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Long Measure |
| 12 inches |
1 foot |
| 3 feet |
1 yard |
| 5-1/2 yards |
1 rod |
| 40 rods |
1 furlong |
| 8 furlongs |
1 statue mile |
| 3 miles |
1 league |
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Square Mile |
| 144 sq. inches |
1 sq. foot |
| 9 sq. ft. |
1 sq. yard |
| 30-1/4 sq. yards |
1 sq. yard |
| 40 sq. rod |
1 rood |
| 640 acres |
1 sq. acre |
| 640 acres |
1 sq. mile |
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Mariner's Measure |
|
6 feet |
1 fathom |
|
120 fathom |
1 cable length |
| 7-1/3 cable lengths |
1 mile |
| 5,280 fet |
1 statue mile |
| 6,080.2 feet |
1 nautical mile |
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Cubic Measure |
| 1 cubic centimeter |
0.061 cubic inch |
| 1 cubic inch |
16.39 cubic cent. |
| 1 cubic decimeter |
0.0353 cubic foot |
| 1 cubic foot |
28.317 cubic dec. |
| 1 cubic meter |
1.308 cubic yards |
| 1 cubic yard |
0.7646 cubic meter |
| 1 stere |
0.2759 cord |
| 1 cord |
3.624 steres |
| 1 liter |
0.906 qu. Dry = 1.0568 qts. liquid |
| 1 quart dry |
1.101 liters |
| 1 quart liquid |
0.9463 liter |
| 1 dekaliter |
2.6417 gallons = 1.135 pecks |
| 1 gallon |
0.975 dekaliter |
| 1 peck |
0.811 dekaliter |
| 1 hekoliter |
2.8375 bushels |
| 1 bushel |
0.3524 hekoliter |
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Miscellaneous Constants |
| Logc x |
2.30259 log10 x |
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Electronic charge |
4.8x10-10 e.s.u.=
1.60x10-20 e.m.u. |
| Mass units |
1.07x10-3x Mev =
6.71x10-2 ergs |
| Speed of light |
3x108 meters/sec |
Speed of sound
(in air at sea level) |
1100 ft/sec |
| p=3.14159 |
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| p=2.71828 | |
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Geometric Figures |
| Circle, area of |
D2 x 0.7854 = p2 (r=radius) |
| Circle, circumference of |
pD or 2pr |
| Sphere, area of |
pd2-4pr2 (D=diameter) |
| Sphere, volume of |
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| Triangle, area of |
1/2 altitude x base |
| Cone, volume of |
area of base x 1/3 altitude |
| Trapezoid, area of |
1/2 (sum of parallel sides) x altitude |
| Pyramid, volume of |
area of base x 1/3 altitude | | |
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