**Glossary**»

**Units**»

**Fraction**»

**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: Mass: Dram Or Drachm (apothecary)

Glossary: Units: Area: Square Millimeter

Glossary: Units: Area Moment of Inertia: Bisquare Foot

Glossary: Units: Force: Kilogram Meter Per Square Second

Glossary: Units: Volume: Sack (UK)

Glossary: Units: Specific Acoustic Impedance: Kilogram Per Square Meter Second

Glossary: Units: Electric Inductance: Newton Meter Per Square Ampere

Glossary: Units: Mass: Sack (UK, Weight)

Glossary: Units: Pressure: Pascal

Glossary: Units: Electric Charge: Electronic Charge

Glossary: Units: Area: Square Millimeter

Glossary: Units: Area Moment of Inertia: Bisquare Foot

Glossary: Units: Force: Kilogram Meter Per Square Second

Glossary: Units: Volume: Sack (UK)

Glossary: Units: Specific Acoustic Impedance: Kilogram Per Square Meter Second

Glossary: Units: Electric Inductance: Newton Meter Per Square Ampere

Glossary: Units: Mass: Sack (UK, Weight)

Glossary: Units: Pressure: Pascal

Glossary: Units: Electric Charge: Electronic Charge

**Related Pages**

eFunda: Glossary: Units: Power (Heat Flow): British Thermal Unit ...

eFunda Glossary for Units, Category:Power (Heat Flow), Unit name: British Thermal Unit (therm.) Per Hour, Unit Symbol: Btu (therm.)/h.

eFunda: Glossary: Units: Specific Heat: British Thermal Unit (IT ...
eFunda Glossary for Units, Category:Specific Heat, Unit name: British Thermal Unit (IT) Per Pound Per Fahrenheit Degree, Unit Symbol: Btu (IT)/lb-deg F.

Glossary of Heat Transfer Terms
Stated in other words, F12 is the fraction of object 2 visible from the surface of object 1, and ranges from zero to 1. This quantity is also known as the ...

eFunda: Glossary: Units: Fraction: Part Per Billion
eFunda Glossary for Units, Category:Fraction, Unit name: Part Per Billion, Unit Symbol: ppb.

eFunda: O-P Unit Listing
part per billion ... Units » Fraction » Part Per Hundred Million · Units » Permeability » Perm (0°C) · Units » Electric Current Density » Ampere Per Square ...

eFunda: Glossary: Units: Fraction: Carat (karat)
Other units in the category of Fraction include Part Per Billion (ppb), Part Per Hundred (pph, %), Part Per Hundred Million (pphm), Part Per Hundred ...

efunda: Fraction Calculator
Units » Fraction » Part Per Tera · Units » Fraction » Part Per Billion · Units » Fraction » Carat (karat) · Units » Fraction » Part Per Hundred Million ...

efunda: SI Unit Prefixes
A table of unit prefixes such as deci, milli, micro, kilo, and mega in the SI system.

eFunda: Convert parsec to other Length units
Large length unit used in astronomy to describe distances to stars and galaxies. It is the distance from the sun to a remote star when the largest possible ...

eFunda: Thermal Unit Category
British thermal unit (IT) per foot per hour per Fahrenheit degree ... British thermal unit (IT)-inch per square foot per second per Fahrenheit degree ...