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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.

Note that the seven base dimensions are M (Mass), L (Length), T (Time), Q (Temperature), N (Aamount of Substance), I (Electric Current), and J (Luminous Intensity).

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**

N/A

**Related Glossary Pages**

Glossary: Units: Linear Momentum: A.u. of Linear Momentum

Glossary: Units: Density: Slug Per Cubic Foot

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

Glossary: Units: Length: Mile (nautical, UK, US)

Glossary: Units: Thermal Conductivity: British Thermal Unit (IT)-Inch Per Square Foot Per Hour Per Fahrenheit Degree

Glossary: Units: Surface Density: Kilogram Per Square Meter

Glossary: Units: Mass: Slug (geepound)

Glossary: Units: Moment, Torque: Pound Force-Foot

Glossary: Units: Pressure: Newton Per Square Meter

Glossary: Units: Joule-Thomson Coefficient: Kelvin Per Pascal

Glossary: Units: Density: Slug Per Cubic Foot

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

Glossary: Units: Length: Mile (nautical, UK, US)

Glossary: Units: Thermal Conductivity: British Thermal Unit (IT)-Inch Per Square Foot Per Hour Per Fahrenheit Degree

Glossary: Units: Surface Density: Kilogram Per Square Meter

Glossary: Units: Mass: Slug (geepound)

Glossary: Units: Moment, Torque: Pound Force-Foot

Glossary: Units: Pressure: Newton Per Square Meter

Glossary: Units: Joule-Thomson Coefficient: Kelvin Per Pascal

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