Enter the total micro grams per cubic meter into the calculator to convert into parts per mille (PPM). This calculator can also determine the MCG or volume given the other variables are known.

MCG To PPM Formula

The following formula is used to calculate PPM from MCG.

PPM = MCG / V / 1000
  • Where PPM is the parts per mille
  • MCG is the total micrograms
  • V is the total volume (m^3)

To calculate PPM from MCG, divide the micrograms by the volume, then divide by 1000.

What is MCG?


MCG, short for micro gram, is a unit of measure that is equal to 1 / 1000th of a gram.

To convert this value into PPM, you must know the volume the mass occupies.

How to calculate PPM from MCG?

Example Problem:

The following example outlines how to calculate PPM from MCG.

First, determine the total amount of micro grams. In this example, there are 5 micrograms.

Next, determine the total amount of volume these micrograms occupy. In this case, the total volume is measured to be 2.5 cubic meters.

Finally, calculate the PPM using the formula above:

PPM = MCG / V / 1000

PPM = 5 / .25 / 1000

PPM = .02