# Convert 1000 parts-pm to parts-pt

So you want to convert 1000 parts-per million into parts-per trillion? If you're in a rush and just need the answer, the calculator below is all you need. The answer is 0.001 parts-per trillion.

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

We all use different units of measurement every day. Whether you're in a foreign country and need to convert the local imperial units to metric, or you're baking a cake and need to convert to a unit you are more familiar with.

Luckily, converting most units is very, very simple. In this case, all you need to know is that 1 parts-pm is equal to 1.0E-6 parts-pt.

Once you know what 1 parts-pm is in parts-per trillion, you can simply multiply 1.0E-6 by the total parts-per million you want to calculate.

So for our example here we have 1000 parts-per million. So all we do is multiply 1000 by 1.0E-6:

1000 x 1.0E-6 = 0.001

## What is the best conversion unit for 1000 parts-pm?

As an added little bonus conversion for you, we can also calculate the best unit of measurement for 1000 parts-pm.

What is the "best" unit of measurement? To keep it simple, let's say that the best unit of measure is the one that is the lowest possible without going below 1. The reason for this is that the lowest number generally makes it easier to understand the measurement.

For 1000 parts-pm the best unit of measurement is parts-per billion, and the amount is 1 parts-pb.