How to convert parts-per million to parts-per trillion

1 parts-per million (ppm) is equal to 1×10^6 parts-per trillion (ppt). Conversely, 1 parts-per trillion (ppt) is equal to 1×10^-6 parts-per million (ppm).

Step by step guide to convert parts-per million to parts-per trillion

Converting units

Since both units has meters we just need to convert the metric prefix. There is 1000 millions to a trillion. Thus,

$$1\ ppm = \frac{1}{\frac{1}{1,000,000}} ppt = 1,000,000\ ppt$$

or

$$1\ ppt = 0.0000001\ ppm$$

ppm - parts per million
ppt - parts per trillion

Wikipedia page for parts-per notation