K-factor or K factor may refer to:
Engineering and technology K-factor (aeronautics), the number of pulses expected for every one volumetric unit of fluid passing through a given flow meter K-factor (centrifugation), relative pelleting efficiency of a given centrifuge rotor K factor (crude oil refining), a system for classifying crude oil K-factor (electrical engineering), a measurement of how well a power transformer can handle harmonic distortion K-factor (fire protection), formula used to calculate the discharge rate from a fire system nozzle K-factor (metallurgy), formulae used to calculate the bending capacity of sheet metal K factor (traffic engineering), the proportion of annual average daily traffic occurring in an hour
Mathematics and statistics K-factor (actuarial), the ratio of the value of deferrable expenses to the value of estimated gross profits k-factor (graph theory), a spanning k-regular subgraph in graph theory
Telecommunications K-factor, the circular segment of earth profile that blocks off long-distance communications in line-of-sight propagation
Other uses K-factor (Elo rating system), a constant used in Elo rating system K-factor (marketing), the growth rate of websites, apps, or a customer base The K Factor, a fictional TV show within Harry Hill's TV Burp Bondi k-factor, the "k" in Bondi k-calculus
See also K (disambiguation) K-value (disambiguation)