# Convert 478 parts-pb to parts-pm

In this article I will show you how to convert 478 parts-per billion into parts-per million. Throughout the explanation below I might also call it 478 parts-pb to parts-pm. They are the same thing!

## How to Convert Parts-per billion to Parts-per million

A parts-per billion is greater than a parts-per million. I know that a parts-pb is greater than a parts-pm because of something called conversion factors.

Put very simply, a conversion factor is a number that can be used to change one set of units to another, by multiplying or dividing it. So when we need to convert 478 parts-per billion into parts-per million, we use a conversion factor to get the answer.

The conversion factor for parts-pb to parts-pm is:

1 parts-pb = 1000 parts-pm

Now that we know what the conversion factor is, we can easily calculate the conversion of 478 parts-pb to parts-pm by multiplying `1000` by the number of parts-per billion we have, which is 478.

478 x 1000 = 478000 parts-pm

So, the answer to the question "what is 478 parts-per billion in parts-per million?" is 478000 parts-pm.

## Parts-per billion to Parts-per million Conversion Table

Below is a sample conversion table for parts-pb to parts-pm:

Parts-per billion (parts-pb) Parts-per million (parts-pm)
0.0110
0.1100
11000
22000
33000
55000
1010000
2020000
5050000
100100000
10001000000

## Best Conversion Unit for 478 parts-pb

Sometimes when you work with conversions from one unit to another, the numbers can get a little confusing. Especially when dealing with really large numbers.

I've also calculated what the best unit of measurement is for 478 parts-pb.

To determine which unit is best, I decided to define that as being the unit of measurement which is as low as possible, without going below 1. Smaller numbers are more easily understood and can make it easier for you to understand the measurement.

The best unit of measurement I have found for 478 parts-pb is parts-per billion and the amount is 478 parts-pb.