Gait Speed Calculator: Walking Speed Test, Norms and Frailty Cut-offs
Turn a timed walk (4 m, 6 m, 10 m or any distance) into gait speed in m/s, km/h and mph, average two trials, and compare it with age and sex norms, the 0.8 and 1.0 m/s thresholds, the SPPB gait score, the Fried frailty slowness criterion and the speed needed to cross at a signal.
How it works
gait speed (m/s) = distance ÷ time (average of trials) · km/h = m/s × 3.6 · mph = m/s × 2.237 · bands: < 0.6 slow · 0.6–0.8 below typical · 0.8–1.0 intermediate · 1.0–1.2 normal · ≥ 1.2 good · SPPB 4 m: < 4.82 s = 4, 4.82–6.20 = 3, 6.21–8.70 = 2, > 8.70 = 1
Usual walking speed over a short measured course is one of the most reliable single predictors of health in older adults, sometimes called the "sixth vital sign". It reflects how muscles, joints, nerves, heart and lungs work together. To test it, the person walks a marked course at a comfortable pace, often with a couple of metres to speed up before the timed section, and two trials are timed. This calculator averages them, except for the SPPB score, which by protocol uses the faster trial. Divide the distance by the time to get metres per second. The calculator compares the speed with several reference points. Around 1.0 m/s indicates healthy community mobility. Under 0.8 m/s is the European sarcopenia group’s (EWGSOP2) slow-gait cut-off and is linked to more falls, hospital stays and dependence; under 0.6 m/s suggests frailty. It also shows the gait part of the Short Physical Performance Battery (SPPB), based on the time for 4 m. If you add height, it checks the Fried frailty “slowness” criterion (15 ft in 6 or 7 seconds or more, depending on sex and height). It also checks whether you could cross at a pedestrian signal timed for 1.07 m/s (3.5 ft/s). Age and sex norms come from a meta-analysis of comfortable walking speed in healthy adults. Results from other distances are scaled to 4 m for the SPPB score, which is an approximation. The number is most useful when tracked over time in the same person with the same course.
Worked example
Walking a 4 m course in 4 seconds gives 4 ÷ 4 = 1.00 m/s (3.60 km/h, 2.24 mph): normal community mobility. For a woman aged 70, the typical usual speed is 1.13 m/s, so this is 88% of typical. The 4 m time of 4.00 s scores 4 of 4 SPPB gait points, and at 1.00 m/s she is just below the 1.07 m/s speed pedestrian signals are timed for, so she may need extra crossing time. Taking 6.7 seconds over the same 4 m would drop the speed to 0.60 m/s, a frailty-range result.
Sources: Studenski S et al. Gait speed and survival in older adults. JAMA 2011
Frequently asked questions
How is gait speed usually tested?
The person walks a marked course (often 4 m, 6 m or 10 m) at their usual comfortable pace, usually with a short run-up so the timed part is at steady speed. The best or average of two trials is used.
What is a normal walking speed for my age?
For healthy adults the usual pace is about 1.3–1.4 m/s up to age 60, then slows to about 1.2–1.3 m/s in the 70s and about 0.95 m/s after 80, with men slightly faster than women.
Why is 0.8 m/s an important number?
It is a widely used threshold below which mobility limitation and adverse outcomes become more likely, and it is the EWGSOP2 cut-off for slow gait in sarcopenia. Around 1.0 m/s is a common marker of healthy ageing.
How do I convert my 4 m walk time to an SPPB score?
In the SPPB, a 4 m walk under 4.82 s scores 4 points, 4.82–6.20 s scores 3, 6.21–8.70 s scores 2, over 8.70 s scores 1, and being unable to walk scores 0.
How fast do I need to walk to cross the street?
Pedestrian signals in the US are timed for a walking speed of 3.5 ft/s (about 1.07 m/s). Many older adults walk slower than this, so they may need extra time.
Can gait speed be improved?
Often yes, through strength and balance training, treating pain or vision problems, reviewing medicines and using suitable footwear or walking aids. Repeating the same test shows whether these help; a gain of 0.1 m/s is a substantial improvement.
Related calculators
Educational estimate only, not a medical diagnosis or a substitute for professional assessment. Gait speed cut-offs and norms are population tools. Discuss any concern about walking, balance or falls with a doctor or physiotherapist.