Fitts's Law
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
The time required to point to a target increases with the distance to the target and decreases with the size of the target; it is a fundamental law for interface and target accessibility design.
SCAFFOLDING EFFECT
Reduce cognitive load
Fitts's law (also known as Fitts' law) is a predictive model of human movement primarily used in human–computer interaction and ergonomics. The law predicts that the time required to rapidly move to a target area is a function of the ratio between the distance to the target and the width of the targ…
Anchor fast decisions
The time required for a pointing device to reach a target increases with the distance to the target and decreases with the size of the target, following a logarithmic relationship. It is a classic quantitative law in human-computer interaction and interface design.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Fitts%27s_lawverified
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