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**Part Per Hundred Million**

**Part Per Hundred Million (pphm)**is a unit in the category of

*Fraction*. It is also known as parts per hundred million. This unit is commonly used in the INT unit system. Part Per Hundred Million (pphm) has a dimension of nil (fraction) where L is length, T is time, N is amount of substance, and I is electric current. It can be converted to the corresponding standard SI unit by multiplying its value by a factor of 1E-008.

Other units in the category of Fraction include Carat (karat) (ct, Kt), Part Per Billion (ppb), Part Per Hundred (pph, %), Part Per Hundred Thousand (ppht), Part Per Million (ppm), Part Per Quadrillion (ppq), Part Per Tera (ppt), and Part Per Thousand (ppt).

**Additional Information**

**Related Glossary Pages**

Glossary: Units: Mass: Quarter (US, Long)

Glossary: Units: Mass: Hundredweight (net Or Short)

Glossary: Units: Velocity: Centimeter Per Second

Glossary: Units: Time: Day

Glossary: Units: Electric Resistance: Statohm

Glossary: Units: Electromagnetic Radiation Flux Density: Jansky

Glossary: Units: Length: Zeptometer

Glossary: Units: Density: Pound Mass Per Cubic Inch

Glossary: Units: Photoelastic Work: Brewster

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