Duration
# Duration

Duration may refer to:

* The amount of time elapsed between two events
* Duration (music) – an amount of time or a particular time interval, often cited as one of the fundamental aspects of music
* Duration (philosophy) – a theory of time and consciousness first proposed by Henri Bergson
* Duration (project management) – the number of calendar periods for the completion of a project in project management
* Bond duration – the weighted average time until the various cash flows from a bond are received
