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**Part Per Billion**

**Part Per Billion (ppb)**is a unit in the category of

*Fraction*. It is also known as parts per billion. This unit is commonly used in the INT unit system. Part Per Billion (ppb) 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-009.

Other units in the category of Fraction include Carat (karat) (ct, Kt), Part Per Hundred (pph, %), Part Per Hundred Million (pphm), 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: Pressure: Pound Force Per Square Foot

Glossary: Units: Energy Density: Kilojoule Per Cubic Meter

Glossary: Units: Angular Momentum, Action: Joule-Second

Glossary: Units: Linear Mass Density: Pound (mass) Per Inch

Glossary: Units: Solid Angle: Square Arcminute

Glossary: Units: Electric Potential: A.u. of Electric Potential

Glossary: Units: Acceleration: Normal Acceleration

Glossary: Units: Volume: Minim (UK)

Glossary: Units: Permeability Coefficient: Perm-Inch (23°C)

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