Wind Speed Converter
Convert wind speeds between common units and check against equipment operating limits. Includes Beaufort scale force number and description.
Wind Speed Converter
BS 7121-1Enter a wind speed value and select the unit to convert and check against equipment limits.
Conversions
mph
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m/s
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km/h
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knots
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Beaufort Force
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-
Equipment Limits
MEWP (Cherry Picker)
Limit: 28 mph (12.5 m/s)
Mobile Crane
Limit: 31 mph (14 m/s)
Tower Crane (UK)
Limit: 38 mph (17 m/s)
Beaufort Wind Scale
Standard scale for measuring wind force at sea and on land.
| Force | Description | mph | m/s |
|---|---|---|---|
| 0 | Calm | <1 | 0-0.2 |
| 1 | Light air | 1-3 | 0.3-1.5 |
| 2 | Light breeze | 4-7 | 1.6-3.3 |
| 3 | Gentle breeze | 8-12 | 3.4-5.4 |
| 4 | Moderate breeze | 13-18 | 5.5-7.9 |
| 5 | Fresh breeze | 19-24 | 8.0-10.7 |
| 6 | Strong breeze | 25-31 | 10.8-13.8 |
| 7 | Near gale | 32-38 | 13.9-17.1 |
| 8 | Gale | 39-46 | 17.2-20.7 |
| 9 | Strong gale | 47-54 | 20.8-24.4 |
| 10 | Storm | 55-63 | 24.5-28.4 |
| 11 | Violent storm | 64-72 | 28.5-32.6 |
| 12 | Hurricane | 73+ | 32.7+ |
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