Efficiency (disambiguation)

Efficiency is the extent to which time or effort is well used for the intended task or purpose.

Efficiency may also refer to:

Efficiency (aerodynamics), the amount of lift divided by the aerodynamic drag
Efficiency (apartment), a one-room apartment
Efficiency (basketball), a statistical benchmark to compare the overall value of players
Efficiency (computer science), related to the amount of computational resources used by the algorithm
Efficiency (economics), a situation in which nothing can be improved without something else being hurt
- Efficiency (fair division), any changes made to assist one person would harm another
Efficiency (finance), non-mean-variance portfolio analysis, a way of showing that a portfolio is not efficient
Efficiency (mechanical)
Efficiency (network science), a measure of how efficiently a network exchanges information
Efficiency (statistics), a measure of quality of an estimator, experiment, or test
Energy efficiency (physics), the ratio of power consumed to useful power output

See also