Parts Per Million Calculator
Calculate parts per million (ppm) concentration. ppm = (mass of solute / total mass) x 10^6
PPM: (part / total) x 10^6
Common Standards:
Parts Per Million
1.0000 ppm
Parts Per Billion
1000.0000 ppb
Percent
0.000100%
mg/L (in water)
1.0000
Part Mass
1
Conversions:
1 ppm = 1,000 ppb
1 ppm = 0.0001%
1 ppm = 1 mg/L (in water)
1 ppm = 1 mg/kg
What is Parts Per Million?
Parts per million (ppm) is a unit of concentration that represents one part of solute per million parts of solution. It is commonly used for very dilute solutions, such as contaminants in water or air. For aqueous solutions at room temperature, ppm is approximately equal to mg/L because the density of water is close to 1 g/mL.