Axis

Mole, mass & volume fractions

parts per billionppb

One part per billion (10⁻⁹).

Dimension
1
Canonical signature
1
System
common
Exactness
Exact

Definition record

How this unit is defined

Canonical base
This unit defines its own base.
Conversion type
linear
Historical notes
The “billion” here is the short scale (10⁹).
Aliases
parts per billion, ppbv, ppbw

Same dimension

Related units

percentcommon%decibelsi accepteddBparts per millioncommonppmMach numbercommonMaspecific gravitycommonSGparts per trillioncommonpptexposure valuecommonEVper millecommon‰

Common conversions

Every conversion routes through the canonical base of the dimension.

This unit defines its own dimension.