Aquatics Unlimited: Conversions and Formulas
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Length | Weight | Area | Volume | Concentration | Flow Rate | Temperature
Gallons in Tank | Gallons in Pond | Gravel in Tank | dKH

Conversions & Formulas

Length:

1 millimeter (mm)

  • = 0.04 inch

1 centimeter (cm)

  • = .3937 inch

1 inch (in)

  • = 2.54 cm

1 foot (ft)

  • = 12 inch
  • = 30.48 cm
  • = .305 meter

1 yard (yd)

  • = 3 foot
  • = 36 inch
  • = 91.44 cm
  • = .914 meter

1 meter (m)

  • = 3.28 ft
  • = 39.37 inch
  • = 100 cm

1 kilometer (km)

  • = .62 mile

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Weight:

1 dram (dr)

  • = 1.772 gram

1 grain (gr)

  • = 64.8 milligram
  • = 0.065 gram
  • = 0.35 ounce

1 microgram (mcg)

  • = 0.001 milligram

1 milligram (mg)

  • = 1000 microgram
  • = 0.001 gram
  • = 0.0154 gram

1 gram (g)

  • = 15.432 grain
  • = 0.0353 ounce
  • = 0.034 fluid ounce (water)
  • = 0.0022 pound
  • = 0.002 pint (water)
  • = 0.001 liter (water)
  • = 1000 milligram
  • = 0.001 kilogram

1 ounce (oz))

  • = 480 grain
  • = 28.35 gram
  • = 0.0075 gallon
  • = 0.03 quart
  • = 0.06 pint
  • = 0.0625 pound
  • = 0.96 fuid ounce (water)

1 pound (avoirdupois) (lb)

  • = 7000 grain
  • = 453.6 gram
  • = 16 ounce
  • = 0.12 gallon (water)
  • = 0.016 cubic foot (water)
  • = 0.48 quart (water)
  • = 0.96 pint (water)
  • = 15.35 fluid ounce (water)
  • = 27.68 cubic inch (water)
  • = 453.59 cubic centimeter (water)
  • = 453.59 milliliter (water)
  • = 453.59 gram
  • = 0.454 liter (water)

1 stone

  • = 14 lb

1 hundredweight

  • = 100 pound
  • = 45.3592 kilogram

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Area:

1 square foot (sq ft, ft2)

  • = 144 square inch
  • = 930 square centimeter

1 square meter (m2)

  • = 10.764 square foot
  • = 1550 square inch
  • = 10,000 square centimeter

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Volume:

1 cubic centimeter (cc, cm3)

  • = 1 milliliter
  • = 1 gram (water)
  • = 0.061 cubic inch
  • = 0.001 quart
  • = 0.002 pint
  • = 0.034 fluid ounce

1 cubic inch (cu in, in3)

  • = 16.387 cc
  • = 16.387 ml
  • = 0.0043 gallon
  • = 0.017 quart
  • = 0.035 pint
  • = 0.036 lb (water)
  • = 0.576 oz. (water)
  • = 0.554 fluid oz.
  • = 0.00058 cubic foot
  • = 0.0164 liter
  • = 16.39 gram (water)

1 cubic foot (cu ft, ft3)

  • = 7.481 gallon
  • = 29.922 quart
  • = 59.844 pint
  • = 62.426 lb (water)
  • = 998.816 oz. (water)
  • = 28,355 gram (water)
  • = 957.51 fluid oz.
  • = 1728 cubic inch
  • = 28.316 liter
  • = 28,316 cubic centimeter
  • = 28,316 milliliter

1 cubic meter (m3)

  • = 35.314 cubic foot
  • = 61,024 cubic inch
  • = 1000 liter

1 teaspoon (tsp)

  • = 5 milliliter
  • = 5 cubic centimeter

1 tablespoon (tbs)

  • = 3 teaspoon
  • = 15 milliliter

1 fluid ounce (fl oz)

  • = 6 teaspoon
  • = 2 tablespoon
  • = 0.0078 gallon
  • = 0.031 quart
  • = 29.57 gram (water)
  • = 0.0062 pint
  • = 0.065 pound (water)
  • = 1.04 ounce (water)
  • = 1.8 cubic inch
  • = 29.57 cubic centimeter
  • = 29.57 milliliter
  • = 0.0296 liter

1 cup

  • = 48 teaspoon
  • = 16 tablespoon
  • = 8 fluid ounce
  • = 237 ml

1 pint (pt)

  • = 2.0 cup
  • = 0.5679 liter
  • = 0.125 gallon
  • = 0.5 quart
  • = 1.043 pound (water)
  • = 16.69 ounce (water)
  • = 16 fluid ounce
  • = 28.875 cubic inch
  • = 0.0167 cubic foot
  • = 473.18 cubic centimeter
  • = 473.18 milliliter
  • = 0.473 liter
  • = 473.18 gram (water)

1 quart (qt)

  • = 2.0 pint
  • = 4.0 cup
  • = 946.35 milliliter
  • = 946.35 cubic centimeter
  • = 946.35 gram (water)
  • = 0.95 liter
  • = 0.25 gallon
  • = 2.0 pint
  • = 2.085 pound (water)
  • = 33.36 ounce (water)
  • = 32 fluid ounce
  • = 57.75 cubic inch
  • = 0.0334 cubic foot

1 gallon (gal)

  • = 4.0 quart
  • = 8.0 pint
  • = 16.0 cup
  • = 3.785 liter
  • = 0.1339 cubic foot
  • = 231 cubic inch
  • = 8.345 pound (water)
  • = 3785.4 gram (water)
  • = 4 quart
  • = 8 pint
  • = 135.52 ounce (water)
  • = 128 fluid ounce
  • = 3785.4 cubic centimeter
  • = 3785.4 milliliter

1 Imperial gallon

  • = 4.5459 liter
  • = 0.1605 cubic foot
  • = 277.42 cubic inch
  • = 4.845 quart
  • = 1.21 gallon

1 milliliter (ml)

  • = 1 cubic centimeter
  • = 20 drops (approx.)
  • = 0.20 teaspoon
  • = 0.061 cubic inch
  • = 0.001 liter
  • = 1 gram (water)
  • = 0.002 lb (water)
  • = 0.0003 gallon

1 liter (l)

  • = 1000 milliliter
  • = 1000 cubic centimeter
  • = 1.7598 pint
  • = 1.057 quart
  • = 0.264 gallon
  • = 203 teaspoon
  • = 67.6 tablespoon
  • = 35.28 ounce (water)
  • = 33.8 fluid ounce
  • = 4.23 cup
  • = 2.1134 pint
  • = 2.205 pound (water)
  • = 61.025 cubic inch
  • = 0.0353 cubic foot
  • = 1000 gram (water)
  • = 1 kilogram (water)

1 kiloliter (kl)

  • = 1000 liter
  • = 264.18 gallon
  • = 35.315 cubic foot

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Concentration:

1 grain/gallon (gr/gal)

  • = 19.12 part per million

1 pound/million gallon

  • = 0.1199 part per million

1 percent solution (%)

  • = 38 gram/gallon
  • = 1.3 ounce/gallon
  • = 10 gram/1000 milliliter
  • = 10 milliliter/1000 milliliter
  • = 10 milliliter/liter
  • = 38 milliliter/gallon
  • = 1 gram/100 milliliter
  • = 1 ounce/0.75 gallon
  • = 4.53 gram/pound
  • = 0.624 pound/cubic foot

1 percent in food (%)

  • = 4.5 gram/pound
  • = 0.2 ounce/pound
  • = 83 grain/pound
  • = 10,000 part per million

1 part per thousand

  • = 1000 part per million

1 part per million (ppm)

  • = 1 milligram/liter
  • = 3.8 milligram/gallon
  • = 2.7 pound/acre foot
  • = 0.0038 gram/gallon
  • = 0.0283 gram/cubic foot
  • = 0.0000623 pound/cubic foot
  • = 1233 gram/acre foot
  • = 8.34 pound/million gallon
  • = 1 ounce/1000 cubic foot
  • = 1 gram/264 gallon
  • = 1 gram/cubic meter
  • = 0.134 ounce/1000 gallon

1 milligram/liter (mg/l)

  • = 1 part per million
  • = 3.8 milligram/gallon
  • = 2.7 pound/acre foot
  • = 0.0038 gram/gallon
  • = 0.0283 gram/cubic foot
  • = 0.0000623 pound/cubic foot
  • = 1233 gram/acre foot
  • = 0.0586 gram/gallon
  • = 8.34 pound/million gallon
  • = 1 ounce/1000 cubic foot
  • = 1 gram/264 gallon
  • = 1 gram/cubic meter
  • = 0.134 ounce/1000 gallon

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Flow Rate:

1 gallon per hour (gph, gal/hr)

  • = 3.785 liter per hour

1 gallon per minute (gpm)

  • = 60 gallon per hour
  • = 3.785 liter per minute
  • = 227.1 liter per hour

1 liter per hour (l/hr)

  • = 0.264 gallon per hour

1 liter per minute (l/min)

  • = 0.264 gallon per minute
  • = 15.8 gallon per hour

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Temperature:

degrees Celsius

  • = 0.56 (degrees fahrenheit - 32)

degrees Fahrenheit

  • = (1.8 x degrees Celsius) + 32

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Gallons in Aquarium:

To determine the number of gallons in a rectangular aquarium:

  • Length (in inches) x Width (in inches) x Height (in inches) / 231

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Gallons in Pond:

To determine the number of gallons in a rectangular pond:

  • Length (in feet) x Width (in feet) x Height (in feet) x 7.5

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Gravel in Aquarium:

To determine the number of pounds of gravel required for a rectangular aquarium:

  • Length (in inches) x Width (in inches) x Desired Gravel Depth (in inches) x .05

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dKH

  • To convert degrees of German hardness (dKH) to parts per million (ppm), multiply by 17.
  • To convert degrees of German hardness (dKH) to milliequivalents per liter (meq/l), divide by 2.8.

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All rights reserved.

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