Conversion Calculators

[mesocosm]

Greetings All !

It occurs to me that as long as we're talking about "science", then we might as well get the units cited correctly. Here's a breakdown of my favorite online units conversion website ...

OnlineConversion.com
http://www.onlineconversion.com/

When you visit the OnlineConversion.com website, you'll get this index ...


Acceleration (Many different acceleration constants. g-unit, meter/square second,
more...)

Angles (Gradients, Radians, Degrees, Minutes, Seconds, Points, More...)

Area (Square centimeter, Square meter, Square inch, Square foot, Square mile, Square Kilometer, Acres, Circles, More...)

Astronomical (Astronomical unit, light-years, parsecs, More...)

Computers and Electronics (Various conversions and calculators related to
computers and electronics.)

Common Cooking Conversions (Various cooking volume conversions, including
Drop, Dash, Pinch, Teaspoons, Tablespoons, Cups, etc. Plus other cooking
conversions such as butter weight, and gas mark temperatures.)


BTW ... 1 milliliter = 19.476 876 994 drop, and 1 Teaspoon [US] = 4.928 921 615 milliliter ... just thought you might be interested.


Date and Time (Several different converters and calculators related to dates and times.)

Density (kg/cubic meter, lbm/cubic foot, lbm/gallon, aluminum, copper, gold, water, More...)

Energy (Joules, Btu, calories, electronvolt, erg, watt hour, therm, toe, tce, More...)

Finance (Several calculators and conversions related to finance)

Flow Rate (Many different flowrate conversions. Includes separate pages for mass based, volume based, and mole based flowrates.)

Force (Dyne, gram-force, poundals, newtons, pounds, kgm-force, More...)

Frequency (Hertz, cycles per second, revolutions per second, degrees per second, radians per second, many more...)

Fun Stuff (Several fun and interesting calculators and conversions.)


Length/Distance (Millimeters, Centimeters, Inches, Feet, Yards, Meters,
Kilometers, Miles, Mils, Rods, Fathoms, Nautical Miles, More...)

Within this Length/Distance section ...

Common Length Conversions
All Length Conversions
Metric Length Conversions


Light (Conversion calculators for illuminance and luminance.)

Miscellaneous (Several calculators and conversions that didn't fit any other
category)

Numbers. Number conversions and information. (Base conversion, SI Standard
prefixes, American and British naming conventions, and more...)

Power (Watts, BTU/hour, foot-lbs/second, Horsepower, kilowatts, More...)

Pressure (dyne/sq cm, Pascal, poundal/sq foot, Torr, inch H2O, inch mercury,
More...)

Speed (centimeters/second, meters/second, kilometers/hour, feet/second,
feet/minute, miles/hour, knots, mach, More...)

Temperature (Celsius, Fahrenheit, Rankine, Reaumur, and Kelvin)

Torque (Pound-force Foot, Pound-force Inch, Kilogram-force Meter, and Newton meter)

Viscosity (Poise, Centipoise, Water, Oil, Glycerin, more...)

Volume Liquid and Dry. (Liters, Fluid Ounces, Pints, Quarts, Gallons, Milliliter/cc, Barrels, Gill, Hogshead, More...)

Weight/Mass (Kilograms, Ounces, Pounds, Troy Pounds, Stones, Tons, More...)


*Note: If anyone else has additional links that they'd be helpful enough to share, PLEASE do post them in this thread ... Thanks!

Enjoy ...



HTH

[mesocosm]

Greetings All !


Figuring out how much on a substance needs to be added to a given volume to produce a specific concentration is something that needs to be done from time to time ... particularly when dosing medications.

Here's something from SImetric which I thought might be useful ...



After determining the correct volume of water to be treated, use this formula to calculate the correct amount of material to use:

Amount of material needed = Vol. x Conv. factor x ppm desired x (100 / % active ingredient)


Vol. = volume of water to be treated. Can be any volumetric units of measurement - cubic feet, litres, gallons, acre-feet.

Conv. factor = the weight of material that must be added to one unit volume of water to give one part per million (ppm). See below for conversion factors.

ppm desired = the treatment rate desired in parts per million (ppm)

% active ingredient = the percent ingredient of the material to be used. Most materials used in treating fish diseases or aquatic weeds are 100% active or are considered to be 100% active for treatment purposes.



Conversion Factors ...

1 acre-foot = 43,560 cubic feet
1 acre-foot = 325,850 gallons
1 acre-foot of water = 2,718,144 pounds
1 cubic foot of water = 62.4 pounds
1 cubic foot of water= 6.24 Imperial gallons
1 US gallon of water = 8.34 pounds
1 Imperial gallon of water= 10 pounds
1 US gallon of water = 3,785 grams or 3.785 kg
1 litre of water = 1,000 grams = 1 kg (approx)
1 litre of water = 1,000 cubic centimetres (cc)
1 cubic metre = 1,000 litre
1 cubic metre = 1 metric tonne of water (appx.)
1 US fluid ounce = 29.57 grams
1 US fluid ounce = 1.043 ounces (av)


HTH

[mesocosm]

Greetings All !


I don't know about you, but I sometimes get lost in the whole mg/ml vs. ppm thing ...

1 mg/kg or 1 mg/L = 1 ppm
1 ug/kg or 1 ug/L = 1 ppb
1 mg/g = 1000 ppm
1 ug/g = 1 ppm
1 nanogram/g = 1 ppb
1 picogram/g = 1 ppt


From:
Pesticide Management Education Program (PMEP)
Conversion Factors Useful in Field Plot Work
Cornell University

BTW ...

... if 1 mg/L = 1 ppm,
... then (1 mg/L) X (1 L/1000 mL) = 1 ppm,
... then 1 mg/1000 mL = 1 ppm,
... so 1 mg/mL = 1000 ppm.


HTH