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ppm is mg/g so your mg/kg is really part per trillion which = 100ppm and mg/kg to a % --> 1 mg = 1e-6 kg so if you had 1mg and 1kg your percent would be 1e-6% or 0.000001% Guest
There are 1 million mg in 1 kg, so 15 mg/kg IS 15 ppm (by weight). Note that ppm is a vague, poorly defined term. It can express a ratio by weight, volume, or mole fraction. Which "flavor" of ppm is meant should ALWAYS be specified. If you meant ppm by volume or mole fraction, there is not enough info.
A forum page for Convert-Me.Com - online units conversion. View topic - mg/kg to PPM
0.5 mg/kg = 0.5 ppm = 500 ppb = 500 000 ppt. The difference between 1 mg and 1 kg is 1 000 000 (one million), so 1 mg/kg is one part per million (1 ppm). To convert from parts per million (ppm) to parts per billion (ppb), simply multiply by 1000 (this works because the fractions 1/1 000 000 and 1000/1 000 000 000 are equivalent). shill.
Re: Convert ppm to mg/cm2. by robertR0931 » Thu Aug 02, 2012 8:00 pm. The conversion for PPM are as follows: 1 Part Per Million (ppm) = 1 milligram per liter (mg/L) = 1 milligram per kilogram (mg/kg) = 1 microgram per gram (µg/g) = 0.0001 percent (%) = 0.013 fluid ounces per 100 gallon water I hope this is what you were looking for.
Anonymous wrote: How do I convert mg/kg to mg/cm2? You can't. mg/kg is a concentration of mass per mass. mg/cm^2 is a concentration of mass per area. Like comparing 50 pounds per 100 pounds versus 50 pounds per square foot. They are not compatible measurements. (It is sort of hard to describe, heh). buckee.
This page features online conversion from permille to kilo. These units belong to different measurement systems. The first one is from Percentages And Parts. The second one is from Metric Prefixes. If you need to convert permille to another compatible unit, please pick the one you need on the page below. You can also switch to the converter for ...