MATHMATICAL CONVERSIONS AND FORMULAS
IMPERIAL TO METRIC CONVERSIONSUNITS OF LENGTH AND AREA

Inches (inc)
x
 ............. 25. 4
=
 Millimeters
Feet (ft)
x
 ............. . 3
=
 Meter
Yards (yd)
x
 ............. . 9
=
 Meter
Miles (ml)
x
 ............. 1. 6
=
 Kilometers
Square inches (in2)
x
 ............. 6. 5
=
 Sq Centimeters
Square Feet (ft2)
x
 ............. 1
=
 Sq Meter
Square Yards (yd2)
x
 ............. 8
=
 Sq Meter
Acres
x
 ............. 4
=
 Hectares
Cubic feet (ft3)
x
 ............. . 03
=
 Cu Meter
Cord (cd)
x
 ............. 3. 6
=
 Cu Meter
Quarts (qt)
x
 ............. . 9
=
 Litre
Gallons (gal)
x
 ............. . 004
=
 Cu Meters
Ounces (oz)
x
 ............. 28. 4
=
 Grams
Pounds (lb)
x
 ............. 5
=
 Kilogram
Horsepower (hp)
x
 ............. 7
=
 Kilowatt
Degrees Farenheit (-32)
x
 ............. 5/9
=
 Degrees Celcius

METRIC TO IMPERIAL CONVERSIONS

Millimeters (mm)
x
 . . 04
=
 Inch
Meters (m)
x
 . 3. 3
=
 Feet
Meters (m)
x
 . 1. 1
=
 Yards
Kilometers (km)
x
 .. . 6
=
 Mile
Sq Centimeters (cm2)
x
 . . 2
=
 Sq inch
Sq Meters (m2)
x
 . 10. 8
=
 Sq Feet
Sq Meters (m2)
x
 . 1. 2
=
 Sq Yards
Hectares (ha)
x
 . 2. 5
=
 Acres
Cu meters (m3)
x
 . 35. 3
=
 Cu Feet
Litres (l)
x
 . 1. 1
=
 Quarts
Cu Meters (m3)
x
 . 284. 2
=
 Gallons
Grams (g)
x
 . . 04
=
 Ounce
Kilograms (kg)
x
 . 2. 2
=
 Pounds
Kilowatts (kw)
x
 . 1. 3
=
 Horsepower
Degrees Celcius
x
 ........... 9/5+32
=
 Degrees Fahrenheit

CUSTOMARY METRIC CONVERSIONSUNITS OF CAPACITY

Fluid ounce (fl oz)
=
Liquid
=
 29. 573 ml
Pint (pt)
=
 16 fl oz
=
 . 473 ltr
Quart (qt)
=
 32 fl oz or 2 pt
=
 . 946 ltr
Gallon (gl)
=
 8 pt
=
 3. 785 ltrs
teaspoon (tsp)
=
=
 5 ml
Tablespoon (tbsp)
=
=
 15 ml
Cup (c)
=
=
 . 24 ltr
Pint (pt)
=
Dry
=
 . 551 dm3
Quart (qt)
=
 2 pints
=
 1. 101 dm3
Peck (pk)
=
 8 quarts
=
 8. 810 dm3
Bushel (bu)
=
 32 quarts
=
 35. 238 dm3
Milliter (ml) = .001 ltr
=
 34 fl oz (liquid)
=
 .002 pt (dry)
Liter (l)
=
 1.057 qt (liquid)
=
 .908 qt (dry)
Hectoliter (hl) = 100 ltrs
=
 26.418 gal (liquid)
=
 2.838 qt (dry)

CUSTOMARY METRIC CONVERSIONS:UNITS OF LENGTH AND CAPACITY

Inches (in)
=
 1 in
=
 25. 4 mm
foot (ft)
=
 12 in
=
 . 305 mtr
Yard (yd)
=
 36 in or 3 ft
=
 . 914 mtr
Mile (mi)
=
 5,280 ft
=
 1. 609 kilometers
In2 (sq in)
=
=
 6. 452 cm2
Ft2 (sq ft)
=
 144 sq in
=
 . 093 m2
Yd2 (sq yd)
=
 1,296 sq in or 9 sq ft
=
 . 836 m2
Acre
=
 43,560 sq ft
=
 . 405 ha
Mile2 (sq ml)
=
 640 acres
=
 2. 59 km2
Millimeter (mm)
=
 .001 meter
=
 . 039 in
Centimeter (cm)
=
 .01 meter
=
 . 394 in
Decimeter (dm)
=
 .1 meter
=
 3. 937 in
Meter (m)
=
=
 3. 381 in
Kilometer (km)
=
 1000 mtrs
=
 . 621 mile
Sq Millimeter (mm2)
=
 .000001 m2
=
 . 002 sq in
Sq Centimeter (cm2)
=
 . 001 m2
=
 . 155 sq in
Sq Meter (m2)
=
=
 10. 764 sq ft
Hectare (ha)
=
 10,000 m2
=
 2. 471 acres
Sq Kilometer (km2)
=
 1,000,000 m2
=
 . 386 sq mi

CUSTOMARY METRIC CONVERSIONSUNITS OF WEIGHT

Grain
=
Avoirdupois
=
 . 065 gram
Ounce (oz avdp)
=
 437. 5 grains or 16 drams
=
 28. 350 grams
Pound (lb avdp)
=
 7,000 grains or 16 oz
=
 . 454 Kilogram
Hundredweight (cwt)
=
 1,000 pounds
=
 45. 359 Kg
Ton, short (tn)
=
 2,000 pounds
=
 . 907 metric ton
Ton, Long
=
 2,240 pounds
=
 1016 metric tons
Ounce (oz troy)
=
 480 grains
=
 31. 104 grams
Pound (lb troy)
=
 5,760 grains
=
 . 373 kilogram
Gram (g)
=
=
 . 35 oz avdp or . 032 oz troy
Dekagram (dag)
=
 10 g
=
 . 353 oz avdp or . 322 oz troy
Hectogram (hg)
=
 10 g
=
 3. 527 oz avdp or 3. 215 oz troy
Kilogram (kg)
=
 1,000 g
=
 2. 205 lb avdp or 2.679 lb troy
Metric ton
=
 1,000 kg
=
 2. 102 short tons or . 984 long ton

TO CONVERT TEMPERATURE

Centigrade to Farenheit = Farenheit - 32 x . 555     Farenheit to Centigrade = Centigrade x 1. 8 + 32

GEOMETRIC FORMULA

CIRCLE Area
=
 ½ diameter x ½ circumference
Area of a sector
=
 length of Arc x ½ Radius
Area of Segment which is greater than a Semicircle
=
 Area of sector of equal radius + area of triangle
Area of Segment which is Less than a Semicircle
=
 Area of sector of equal radius - area of triangle
Circumference
=
 Diameter x 3.1416
=
 Radius x 6.283185
Diameter
=
 Circumference x . 3183
Radius
=
 Circumference x . 0159155
CYLINDER OR PRISM Surface
=
 (Area of both ends + length) x Circumference
ELLIPSE Area
=
 Product of the two diameters x . 7854
PARABOLA Area
=
 2/3 Altitude x base
PARALLELOGRAM Area
=
 Altitude x base
POLYGON (Regular) Area
=
 Sum of sides x perpendicular from center to one of sides devided x 2
PYRAMID or CONE Surface
=
 Circumference of base x ½ slant height + area of base
SPHERE Circumference
=
 Cube root of solidity x 3.8978
=
 Square root of surface x 1.772454
Contents
=
 Diameter x . 5236
Contents of Segment
=
 (Height squared + 3 times the Sq of radius of base) x (height x . 5236)
Diameter
=
 Sq root of surface x . 56419
=
 Cube root of solidity x 1.2407
Surface
=
 Circumference x Diameter
Volume
=
 Surface x 1/6 Diameter
=
 Diameter cubed x . 5236
=
 Radius cubed x 4.1888
=
 Circumference Cubed x . 016887
SQUARE / RECTANGLE Area
=
 Length x Width
TRAPEZIUM Area
=
 Devide trapezium into 2 triangles, add their areas
TRAPEZIOD Area
=
 Altitude x ½ sum of parallel sides
TRIANGLE Area
=
 ½ Altitude x Base
WEDGE Contents
=
 ½ Altitude x Area of Base