Formulas

Temperature Temperature Volume Length Length
C F C F Liters Quarts cm inch cm inch
100 212 15 59 1 1.1 2.5 1 100 39
90 194 10 50 2 2.1 5 2 200 79
80 176 5 41 3 3.2 10 4   feet
70 158 0 32 4 4.2 20 8 300 10
60 140 -5 23 5 5.3 30 12 400 13
50 122 -10 14 6 6.3 40 16 500 16
40 104 -15 5 7 7.4 50 20 1,000 33
35 95 -20 -4 8 8.5 60 24    
30 86 -25 -13 9 9.5 70 28    
25 77 -30 -22     80 32    
20 68 -40 -40     90 36    

Table of Conversion Factors:

To Convert From To Multiply By
Cubic feet gallons 7.48
Cubic feet liters 28.3
Gallons milliliters 3785
Grams pounds .0022
Grams/liter parts/million 1000
Liters cubic feet .0353
Milligrams/liter parts/million 1
Milliliters/gallon gallons .0026
Ounces grams 28.35
Parts/million grams/liter .001
Pounds grams 453.59
Pounds/gallons grams/liter 111.83
1 gram = .035 ounce 1 hectare = 2.5 acres
1 kilogram = 2.2 lbs 1 meter = 39.4 inches
1 quintal = 100 kg = 221 pounds 1 kilometer = .6 mile
1 metric ton = 1000 kg = 2,205 lbs  

Conversion Table:

  • 1 kilogram (kg) = 1000 grams (g) = 2.2 lbs
  • 1 gram (g) = 1000 milligrams (mg) = .35 ounce
  • 1 liter = 1000 milliliters (ml) or cubic centimeter (cc) = 1.058 quarts
  • 1 milliliter or cubic centimeter (cc) of water weighs 1 gram (g)
  • 1 liter of water weighs 1 kilogram
  • 1 lb = 453.6 grams
  • 1 ounce = 28.35 grams
  • 1 pt. of water weighs approximately 1 lb
  • 1 gallon of water weighs approximately 8.34 lbs
  • 1 gall = 4 quarts = 3.785 liters
  • 1 quart = 2 pints = .946 liters
  • 1 pint = .473 liters
  • 1 fluid ounce = 29.6 milliliters of cubic centimeters
  • 1 part per million (ppm)
  • = 1 milligram/liter
  • = 1 milligram/kilogram
  • = .0001 per cent
  • = .013 ounces in 100 gallons of water

1 percent:

  • = 10,000 ppm
  • = 10 grams per liter
  • = 10 grams per kilogram
  • = 1.33 ounces by weight per gallon of water
  • = 8.34 pounds/100 gallons of water
  • .1 percent = 1000 ppm = 1000 milligrams/liter
  • .01 percent = 1000 ppm = 100 milligrams/liter
  • .0001 percent = 1 ppm = 1 milligram/liter

Conversion Tables (U.S.) Linear Measure:

  • 1 foot = 12 inches
  • 1 yard = 3 feet
  • 1 rod = 5.5 yards = 16.5 feet
  • 1 mile = 160 rods = 1760 yards = 5280 feet

Square Measure:

  • 1 square foot (sq. ft.) = 144 square inches (sq. inch.)
  • 1 square yard (sq. yd) = 9 sq. feet
  • 1 square rod (sq rd) = 272.25 sq. ft. - 30.25 sq. yds.
  • 1 acre = 43560 sq. ft. = 4840 sq. yd. = 169 sq. rd.
  • 1 sq. mile = 640 acres

Cubic Measure:

  • 1 cubic foot (cu. ft.) = 1728 cubic inches (cu. in.)
  • 1 cubic yard = 27 cubic feet

Liquid Capacity Measure:

  • 1 tablespoon = 3 teaspoons
  • 1 fluid ounce = 2 tablespoons
  • 1 cup = 8 fluid ounces
  • 1 pint = 2 cups = 16 fluid ounces
  • 1 quart = 2 pints = 32 fluid ounces
  • 1 gallon = 4 quarts = 8 pints = 128 fluid ounces

Weight Measure:

  • 1 pound = 16 ounces
  • 1 hundred weight (cwt) = 100 pounds
  • 1 ton = 20 cwt = 2000 pounds

Rates of Application:

  • 1 ounce/sq ft = 2722.5 lbs/acre
  • 1 ounce/sq yd = 302.5 lbs/acre
  • 1 ounce/100 sq ft = 27.2 lbs/acre
  • 1 pound/100 sq ft = 435.6 lbs/acre
  • 1 pound/1000 sq ft = 43.6 lbs/acre
  • 1 gallon/acre = 1/3 ounce/1000 square feet
  • 5 gallons/acre = 1 pint/100 sq ft
  • 100 gallons/acre = 2.3 gallons/1000 sq ft = 1 quart/100 sq ft
  • 100 lbs/acre = 2.5 pounds/1000 sq ft

Important Facts:

  • Volume of sphere - diameter cubed x .5236
  • Diameter = circumference x .31831
  • Area of a circle = dia squared x .7854
  • Area of ellipse = prod. of both dia x .7854
  • Volume of cone = area of base x 1/3 height
  • 1 cubic foot water = 7.5 gallons = 62.5 pounds
  • Pressure in psi = ht. (ft.) X .434
  • 1 acre = 209 feet square
  • ppm = % x 10,000
  • % = ppm
  • 10,000
  • 1% by volume = 10,000 ppm

Measure of Length: (Linear Measure)

  • 4 inches = 1 hand
  • 9 inches = 1 span
  • 12 inches = 1 foot
  • 3 feet = 1 yard
  • 6 feet = 1 fathom
  • 5.5 yards = 16.5 feet = 1 rod
  • 40 poles = 1 furlog
  • 8 furlogs = 1 mile
  • 5,280 feet = 1,760 yards = 320 rods = 1 mile
  • 3 miles = 1 league

Measure of Surface: (area)

  • 144 Square inches = 1 square foot
  • 9 square feet = 1 square yard
  • 30.25 square yards = 1 square rod
  • 160 square rods = 1 acre
  • 43,560 square feet = 1 acre
  • 640 square acres = 1 square mile
  • 36 square miles = 1 township

Surveyor's Measure:

  • 7.92 inches = 1 link
  • 25 links = 1 rod
  • 4 rods = 1 chain
  • 10 square chains = 160 square rods = 1 acre
  • 640 acres = 1 square mile
  • 80 chains = 1 mile
  • 1 Gunthers chain = 66 feet

Liquid Measure:

  • 2 cups = 1 pint
  • 4 gills = 1 pint
  • 16 fluid ounces = 1 pint
  • 2 pints = 1 quart
  • 4 quarts = 1 gallon
  • 31.5 gallons = 1 barrel
  • 2 barrels = 1 hogshead
  • 1 gallon = 231 cubic inches
  • 1 cubic foot = 7.48 gallons