Keystroke Level Model (KLM) Calculator
Enter an action string below to calculate its cost in the Keystroke Level Model.
- Card, Moran, & Newell, "The keystroke-level model for user performance time with interactive systems,"
CACM, July 1980.
- Card, Moran, & Newell, The Psychology of Human-Computer Interaction, CRC, 1986.
- David Kieras, "Using the Keystroke-Level Model to Estimate Execution Times," 2001.