How to convert number in parts-per million (ppm) to percent (%).

## ppm to percent conversion

1% = 1/100

1ppm = 1/1000000

So one parts-per million is equal to 0.0001 percent:

1ppm = 0.0001%

So to convert from ppm to percent, divide the ppm by 10000:

*x*_{(%)} = *x*_{(ppm)} / 10000

#### Example

Convert 300ppm to percent:

*x*_{(%)} = 300ppm / 10000 = 0.03%