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# Conversion Charts & Formulas

LENGTH — Basic unit is meter (m)

 Metric Unit Meters Inches Feet Yards Miles Millimeter (mm) Centimeter (cm) Decimeter (dm) Meter (m) Decameter (dkm) Hectometer (hm) Kilometer (km) 001 .01 .1 1 10 100 1000 — .3937 3.937 39.37 393.7 3937 — — — .3281 3.281 32.81 328.1 3281 — — .1094 1.094 10.94 109.4 1094 — — — — — — .6214
To Convert
 Inch to mm Multiply by 25.4 mm to Inch Multiply by .03937 Feet to Inch Multiply by .3048 Meters to Feet Multiply by 3.281 Yards to Meters Multiply by .9144 Meters to Yards Multiply By 1.094 Miles to Km Multiply by 1.609 Km to Miles Multiply by .6214

VOLUME — Basic unit is stere (s) which is 1 cubic meter

 Metric Unit Steres Cubic Inch Cubic Feet Cubic Yards Cu. Millimeter (cu mm). Cu. Centimeter (cu cm) Cu. Decimeter (cu dm) Desistere (ds) Stere/Cu Meter (s/cu m) Decastere (dks) .000000001 .000001 .001 .1 1 10 — .3937 3.937 39.37 393.7 3937 — — .3281 3.281 32.81 328.1 — — .1094 1.094 10.94 109.4
To Convert
 Cu.In. to Cu.mm multiply by 1639 Cu.mm to Cu.In multiply by.000061 Cu.In. to Cu.cm multiply by 16.39 Cu.cm to Cu.In. multiply by .06102 Cu.Ft. to Cu.m multiply by .0283 Cu.m to Cu.Ft. multiply by 35.31 Cu.Yds. to Cu.m multiply by .7646 Cu.m to Cu.yds. multiply by 1.308

AREA
— Basic unit is Centare (CA) which is 1 square meter

 Metric Unit Centares Square Inches Square Feet Square Yards Acres Sq. Millimeter (sq.cm.) Sq. Centimeter (sq.cm.) Sq. Decemeter (sq.dm.) Centare/Sq.meter (ca/sq m) Area (a) Hectare (ha) Sq. Kilometer (sq.km) .00001 .0001 .01 1 100 10,000 1,000,000 — .1550 15.50 1550 — — — — — .1076 10.76 1076 — — — — — 1.196 119.6 — — — — — — — 2.471 247.1
To Convert
 Sq. in. to sq. cm multiply by 6.452 Sq. cm to sq. in. multiply by .1550 Sq. Ft. to sq. m. multiply by .0929 Sq. m. to sq. ft. multiply by 10.76 Sq. yds to sq. m. multiply by.8361 Sq. m. to sq. yds. multiply by 1.196 Acres to Hectares multiply by .4047 Hectares to Acres multiply by 2.471 Acres to sq. km. multiply by .004047 Sq. km to Acres multiply by 247.1 Sq. miles to sq. km multiply by 2.590 Sq. km to sq. miles multiply by .3861

WEIGHT
— Basic unit is gram (g)

 Metric Unit Grams Grains Ounces Pounds Milligram (mg) Centigram (cg) Decigram (dg) Gram Decagram (dkg) Hectogram (hg) Kilogram (kg) Quintal (q) Metric Ton (MT) .001 .01 .1 1 10 100 1000 100,000 1,000,000 .01543 .1543 1.543 15.43 154.3 1543 — — — — — — .03527 .3527 3.527 35.27 3527 — — — — — — .22046 2.2046 220.46 2204.6
To Convert
 G to CG multiply by 6.48 CG to G multiply by .1543 Ounces to G multiply by–31.103 G to Ounces multiply by .03527 Pounds to KG multiply by .4536 KG to Pounds multiply by 2.2046 Tons (2000#) to Metric Tons - multiply by .9078 Metric Tons to Tons (2000#) - multiply by 1.1023

# Specific Gravity of Liquids

 LIQUID TEMP °F SPECIFIC GRAVITY Water (1 cu. ft. weighs 62.41 lb) 50 1.00 Brine (Sodium Chloride 25%) 32 1.20 Pennsylvania Crude Oil 80 0.85 Fuel Oil No. 1 and 2 85 0.95 Gasoline 80 0.74 Kerosene 85 0.82 Lubricating Oil SAE 10-20-30 115 0.94
 LIQUID TEMP °F SPECIFIC GRAVITY 30% Acetic Acid 68 1.04 50% Acetic Acid 68 1.05 20% Chromic Acid 68 1.16 20% Hydrogen Peroxide 68 1.07 25% Methyl Alcohol 68 0.96 10% Nitric Acid 68 1.05 20% Nitric Acid 68 1.11

 LIQUID TEMP °F SPECIFIC GRAVITY 20% Phosphoric Acid 68 1.11 20% Sodium Hydroxide 68 1.21 50% Sodium Hydroxide 68 1.52 20% Sulphuric Acid 68 1.14 50% Sulphuric Acid 68 1.40 98% Sulphuric Acid 68 1.83

# Conversion Constants

 To Change To Multiply By Inches ........................ Inches ........................ Feet............................ Feet............................ Yards ......................... Square inches ............. Square feet.................. Square feet.................. Square yards............... Cubic inches ............... Cubic feet.................... Cubic feet.................... Cubic yards................. Cubic inches ............... Cubic feet.................... Gallons....................... Gallons....................... Gallons....................... Pounds of water .......... Ounces....................... Pounds....................... Inches of water ............ Feet ............................... Millimeters...................... Inches............................ Yards............................. Feet ............................... Square feet ..................... Square inches................. Square yards .................. Square feet ..................... Cubic feet ....................... Cubic inches................... Cubic yards .................... Cubic feet ....................... Gallons .......................... Gallons .......................... Cubic inches................... Cubic feet ....................... Pounds of water.............. Gallons .......................... Pounds .......................... Ounces .......................... Pounds per sq.inch ......... 0.0833 25.4 12 0.3333 3 0.00694 144 0.11111 9 0.00058 1728 0.03703 27 0.00433 7.48 231 0.1337 8.33 0.12004 0.0625 16 0.0361
 To Change To Multiply By Inches of water ............ Inches of water ............ Inches of water ............ Inches of mercury ........ Inches of mercury ........ Inches of mercury ........ Ounces per sq. inch ..... Ounces per sq. inch ..... Pounds per sq. inch..... Pounds per sq. inch..... Pounds per sq. inch..... Pounds per sq. inch..... Feet of water................ Feet of water................ Feet of water................ Atmospheres ............... Atmospheres ............... Atmospheres ............... Long Tons................... Short Tons .................. Short Tons .................. Inches of mercury............ Ounces per sq. inch ........ Pounds per sq. foot ......... Inches of water ............... Feet of water ................... Pounds per sq. inch ........ Inches of mercury............ Inches of water ............... Inches of water ............... Feet of water ................... Inches of mercury............ Atmospheres................... Pounds per sq. inch ........ Pounds per sq. foot ......... Inches of mercury............ Pounds per sq. inch ........ Inches of mercury............ Feet of water ................... Pounds .......................... Pounds .......................... Long Tons ...................... 0.0 0.5 5.2 13. 1.1 0.4 0.1 1.7 27. 2.3 2.0 0.0 0.4 62. 0.8 14. 29. 34 224 200 0.89

 Volume 1 gal. (U.S.) 1 cu. ft. = 128 fl. oz. (U.S.) = 231 cu. in. = 0.833 gal. (Brit.) = 7.48 gal. (U.S.)

 Pressure 1 lb. per sq. in. 1 ft. water at 60°F 1 in. Hg at 60°F 1 lb. per sq. in. = 2.31 ft. water at 60°F. = 2.04 in. hg at 60°F. = 0.4333 lb. per sq. in. = 0.884 in. hg at 60°F. = 0.49 lb. per sq. in. = 1.13 ft. water at 60°F. = lb. per sq. in. gauge (psig) + 14.7Absolute (psia)
 Temperature °C °F = (°F —32) X .556 = C(1.8) + 32

 Mass 1 lb. (avoir) 1 ton (short) 1 ton (long) = 16 oz. (avoir.) = 7000 grain = 2000 lb. = 2240 lb.

 Flow 1 gpm 500 lb. per hr. 1 cu. ft. per min. (cfm) = 0.134 cu. ft. per min. = 500 lb. per hr. x sp. gr. = 1 gpm ÷ sp. gr. = 448.8 gal. per hr. (gph)

# Formulas

 Where A = Area ; A1 = Surface area of solids; V = Volume; C = Circumference

Rectangle
 A = W x L

Parallelogram

 A = H x L

Trapezoid

Triangle

Circle

Sector of Circle

Ellipse

Rectangular Solid

Cone

Cylinder

Elliptical Tanks

Sphere