Gait Speed Index (m/s) Calculator
Calculate walking speed
Enter the measured walking distance and the time taken. Use a consistent, documented walking protocol when comparing results over time.
m/sResult unit
About gait speed
Gait speed is the distance walked divided by the time required, expressed in meters per second (m/s). Usual-pace gait speed is a practical measure of physical performance and has been associated with survival and other outcomes in older adults.
How to interpret the result
| Measured speed | Practical interpretation |
|---|---|
| <0.8 m/s | Slower gait; consider further functional and clinical assessment as appropriate. |
| 0.8–1.0 m/s | Interpret in context; thresholds depend on population and intended outcome. |
| >1.0 m/s | Generally faster performance in many older-adult cohorts; does not exclude illness or risk. |
Measurement tips
- Document the walking distance, pace instructions, use of walking aids, and whether acceleration or deceleration zones were included.
- For serial assessment, use the same course length and protocol whenever possible.
- Interpret gait speed alongside symptoms, age, comorbidities, and other functional measures rather than as a stand-alone diagnosis.
Evidence and references
Studenski S, Perera S, Patel K, et al.
Gait speed and survival in older adults. JAMA. 2011;305(1):50–58. DOI: 10.1001/jama.2010.1923; PMID: 21205966.
Abellan van Kan G, Rolland Y, Andrieu S, et al.
Gait speed at usual pace as a predictor of adverse outcomes in community-dwelling older people: an International Academy on Nutrition and Aging (IANA) Task Force. J Nutr Health Aging. 2009;13(10):881–889. Full text: PubMed Central.
Evidence note
The pooled analysis included community-dwelling adults aged 65 years or older and found a continuous association between gait speed and survival. It did not establish the three bands used here as universal individual mortality-risk categories.
Clinical disclaimer: This calculator reports walking speed only. The interpretive bands are pragmatic reference points, not a validated individual mortality prediction model or a substitute for a comprehensive assessment. Thresholds vary by population, protocol, and clinical purpose. Confirm measurements and apply clinical judgment.
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