Gait Speed Calculator

Gait speed is widely used in geriatric and rehabilitation practice as a quick, strongly predictive marker of overall function -- researchers have called it a "sixth vital sign" because a single timed walk correlates with fall risk, hospitalization, and mobility decline. This calculator computes Gait Speed as simply Distance Walked divided by Time to Complete, in meters per second, from any timed walk test distance -- 4, 6, and 10 meters are all common clinical protocols. Every interpretation below -- Fall Risk, Ambulation Category, and Percentile for Age -- assumes the walk was performed at the patient's self-selected, COMFORTABLE pace, which is the standard timed-walk-test protocol; a fast or rushed-pace measurement will read faster than the patient's typical functional speed and will make these interpretations misleadingly optimistic.

That raw speed then classifies into two independent thresholds drawn from widely cited gait-speed literature: Fall Risk is High below 0.6 m/s, Moderate between 0.6 and 1.0 m/s, and Low above 1.0 m/s, while Ambulation Category follows Perry et al.'s three-tier classification of walking handicap: Household Ambulator below 0.4 m/s (mobility largely limited to the home), Limited Community Ambulator from 0.4 up to 0.8 m/s (some outdoor mobility but not fully independent), and Community Ambulator at 0.8 m/s or above, generally the speed needed to safely cross a street within a typical signal cycle and function independently outside the home. Percentile for Age compares the measured speed against an approximate expected speed for the patient's age -- a flat 1.3 m/s baseline through age 59, declining roughly 0.01 m/s per year of age from 60 onward -- to give a sense of how the result compares to typical peers, though this age-adjustment is an approximation, not a validated normative table. Patient Age itself never changes the raw Gait Speed number; it only feeds into this percentile comparison.