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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: Length: Attometer

Glossary: Units: Volume Flow Rate: Gallon (US, Liq.) Per Hour

Glossary: Units: Magnetic Permeability: Henry Per Meter

Glossary: Units: Angle: Radian

Glossary: Units: Specific Heat: Pound Force Foot Per Pound Mass Per Degree Fahrenheit

Glossary: Units: Thermal Heat Capacity: Calorie (IT) Per Gram

Glossary: Units: Area: Township (US)

Glossary: Units: Mass: Hundredweight (UK, Avoirdupois)

Glossary: Units: Thermal Conductivity: British Thermal Unit (therm.)-Inch Per Square Foot Per Second Per Fahrenheit Degree

Glossary: Units: Time: Month (30 Days)

Glossary: Units: Volume Flow Rate: Gallon (US, Liq.) Per Hour

Glossary: Units: Magnetic Permeability: Henry Per Meter

Glossary: Units: Angle: Radian

Glossary: Units: Specific Heat: Pound Force Foot Per Pound Mass Per Degree Fahrenheit

Glossary: Units: Thermal Heat Capacity: Calorie (IT) Per Gram

Glossary: Units: Area: Township (US)

Glossary: Units: Mass: Hundredweight (UK, Avoirdupois)

Glossary: Units: Thermal Conductivity: British Thermal Unit (therm.)-Inch Per Square Foot Per Second Per Fahrenheit Degree

Glossary: Units: Time: Month (30 Days)

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