Since you did not list any non-conformances for the month of December, your PPM for December would be 0. You would not use non-conformances for cards sold in any other month. To calculate that number, you would take the number of non-conformances reported for the cards sold in December 2006 and divide by the number of cards sold in December 2006 and multiply by 1,000,000. In your case, you want to know the PPM for the cards sold in December 2006. That is, 1 micrometer per some unit can be expressed as a PPM of a meter since a micrometer is 1m/1,000,000.PPM (more commonly known as DPM (defects per million)) is calculated using the number of failures for a specific group of parts divided by the total number of those specific parts sold multiplied by 1,000,000. Its use in physics is tied to proportional values or phenomena. Parts-Per notation isn’t just used in use in chemistry, it’s also used in physics. For example, the number of lead atoms per gram of water is then multiplied by 1,000,000. It’s used to describe the number of dissolved pollutants in water. It’s used to both describe and explain the abundance of materials in a solution.Īnother common use is in environmental engineering.

The most common use for parts-per notation is in chemistry. The others PPB, PPT, and even PPQ (parts per quadrillion) are also part of this notation, often referred to as parts-per notation.Īlthough these units are dimensionless, the notation itself is recognized as part of the SI system of units. PPM is one of a set of dimensionless units used to describe small numbers, as stated above. For instance, if your number is still low, switch to parts per billion and so on. PPM is used to bring a really small number into a more realistic number that you can visualize and analyze. This can be done using the calculator above, or it can be done using a standard calculator or hand calculation.įinally, you need to analyze the results. Second, multiply the number you got in step one by 1,000,000. Most often this is a number of atoms in some unit of volume or solution.įor example, the number of carbon atoms per amount of soil. How to calculate PPMįirst, you must determine the number you wish you calculate the parts per million of. 00005 atoms of oxygen per cubic meter of air, that means that in 1 million cubic meters you have 50 atoms per million units. It’s a faction per million units of some number or value.įor instance, if you have. PPM is short for parts per million, which is exactly as it sounds. The following formulas are used to calculate PPM and other values.

BPS Calculator (Basis Points Calculator).

Enter any given number, or values, to calculate the following values ppm, ppb, ppt, permille, and percentage.

How to calculate ppm