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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: Thermal Conductivity: British Thermal Unit (therm.) Per Foot Per Hour Per Fahrenheit Degree

Glossary: Units: Electric Charge: Electrostatic Unit

Glossary: Units: Length: Nanometer

Glossary: Units: Angular Velocity: Radian Per Second

Glossary: Units: Surface Tension: Poundal Per Inch

Glossary: Units: Surface Tension: Newton Per Meter

Glossary: Units: Fracture Toughness: MPa-Sqrt(meter)

Glossary: Units: Density: Kilogram Per Cubic Meter

Glossary: Units: Magnetic Dipole Moment: A.u. of Magnetic Dipole Moment

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