Unit of Measure


AVOIRDUPOIS WEIGHT

27-11/32 grains

1 dram

16 drams

1 ounce

16 ounces

1 pound

25 pounds

1 quarter

4 quarters

1 cwt.

2,000 pounds

1 short ton

2,240 pounds

1 long ton

 

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 qt. Dry = 1.0567 qts. Liquid

1 quart dry

1.101 liters

1 quart liquid

0.9463 liter

1 dekaliter

2.6417 gallons = 1.135 pecks

1 gallon

0.375 dekaliter

1 peck

0.881 dekaliter

1 hekoliter

2.8375 bushels

1 bushel

0.3524 hekaliter

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

GEOMETRIC FIGURES

Area of a circle

D2 x 0.7854 = π r2 (r = radius)

Circumference of a circle

π D or 2π r

Area of a sphere

π D2 - 4π r2 (D + diameter)

Area of a triangle

1/2 altitude x base

Volume of a cone

area of base x 1/3 alititude

Area of a trapezoid

1/2 (sum of parallel sides) x altitude

IMPERIAL LIQUID MEASURE

1 U.S. gallon

.883 Imperial gallon

1 U.S. gallon

3.785 liters

1 Imperial gallon

1.201 U.S. gallons

1 Imperial gallon

4.546 liters

1 liter

0.264 U.S. gallons

1 liter

0.220 Imperial gallon

INTERNATIONAL ELECTRICAL UNITS

1 international ohm

1.000495 absolute ohms

1 international volt

1.00033 absolute volts

1 international ampere

0.999835 absolute ampere

1 international coulomb

0.999835 absolute coulomb

1 international henry

1.000495 absolute henries

1 international farad

0.999505 absolute farad

1 international watt

1.000165 absolute watts

1 international joule

1.000165 absolute joules

LENGTH

1 centimeter

0.3937 inches = 0.0328 feet

1 meter

39.37 inches = 3.28 feet

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

LIQUID WEIGHT

4 gils

1 pint

2 pints

1 quart

4 quarts

1 gallon

31-1/2 gallons

1 barrel

DRY MEASURE

2 pints

1 quart

8 quarts

1 peck

4 pecks

1 bushel

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

MARINER'S MEASURE

6 feet

1 fathom

120 fathoms

1 cable length

7-1/3 cable lengths

1 mile

5,280 feet

1 statue mile

6,080.2 feet

1 nautical mile

MASS

1 slug

32.2 pounds mass = 14.606 kilograms

1 pound mass

453.6 grams

METRIC SYSTEM PREFIXES

Mega

1,000,000

Kilo

1,000

Hecto

100

Deka

10

Deci

.10

Centi

.01

Milli

0.001

Micro

0.000001

MISCELLANEOUS CONSTANTS

Loge X

2.30259 log10 X

Electronic charge

4.8 x 10-10 e.s.u. = 1.60 x 10-20 e.m.u.

Mass units

1.07 x 10-3 x Mev = 6.71 x 10-2 ergs

Speed of light

3 x 108 meters/sec

Speed of sound (in air at sea level)

1100 ft/sec

π

3.14159

e

2.71828

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)

PRESSURE

1 atmosphere

14.69 ponuds/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. in

Water Pressure pounds/sq. in

head in ft x 0.434

SQUARE MEASURE

1 sq. mile

2.59 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. meter

1.196 sq. yards = 10.784 sq. ft

1 sq. kilometer

0.386 sq. miles

1 sq. inch

6.452 sq. centimeters

1 sq. foot

929.03 sq. cm = 0.092903 sq. meters

1 sq. yard

0.8361 sq. meters

TEMPERATURE CONVERSION

°C = 5/9 (°F - 32)

°F = 9/5 (°C + 32)

TIME

1 day

86,400 seconds

1 year

8760 hours (approx.)

ANGLES

1 circle

360 degrees

1 radian

57.3 degrees

1 degree

8760 0.01745 radians

TROY WEIGHT

24 grains

1 pwt.

20 pwt

1 ounce

12 ounces

1 pound

(Used for weighing gold, silver, and jewels)

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


Paige Electric Company, LLP, ©2017