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Percentage, ppm, and ppb Conversions

By Susan E. Fielder, DVM, MS, DACVP (Clinical Pathology), Clinical Assistant Professor, Department of Pathobiology, Center for Veterinary Health Sciences (CVHS), Oklahoma State University

Percentage, ppm, and ppb Conversions

ppm

ppb

Percentage

0.001

1

0.0000001

0.01

10

0.000001

0.1

100

0.00001

1

1,000

0.0001

10

0.001

100

0.01

1,000

0.1

10,000

1

Other useful conversions: 1 mg/kg = 1 ppm; 1 g/ton = 1.1 ppm; 100 g/ton = 110 ppm

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* This is the Veterinary Version. *