Enhanced Fujita rating to kilometers per hour
Type a value in EF scale to get it in km/h instantly.
267.2km/h
That's 1.35× as strong as a strong EF2 tornado, while a violent EF4 tornado is 1.1× stronger.
Convert the other way: km/h to EF scale
What it means
How strong is that tornado?
EF uses three-second gusts and the old F-scale fastest-quarter-mile winds, so the same rating number means different speeds. Ratings are estimated from damage.
The math
How to convert EF scale to km/h
EF ratings are gust bands: EF0 = 65–85 mph, EF1 = 86–110, EF2 = 111–135, EF3 = 136–165, EF4 = 166–200, EF5 over 200. TORRO: v = 2.365 × (T + 4)^1.5 m/s.
Example: EF4 EF scale = 267.151 km/h.
Every unit
That tornado on every scale
Tables
EF scale to km/h conversion table
| EF scale | km/h |
|---|---|
| EF0 EF scale | 104.607 km/h |
| EF1 EF scale | 138.404 km/h |
| EF2 EF scale | 178.637 km/h |
| EF3 EF scale | 218.871 km/h |
| EF4 EF scale | 267.151 km/h |
| EF5 EF scale | 323.478 km/h |
km/h to EF scale conversion table
| km/h | EF scale |
|---|---|
| 105 km/h | EF0 EF scale |
| 138 km/h | EF0 EF scale |
| 179 km/h | EF2 EF scale |
| 219 km/h | EF3 EF scale |
| 267 km/h | EF3 EF scale |
| 323 km/h | EF4 EF scale |
Quick answers
Quick answers
- How many km/h is EF1 EF scale?
- EF1 EF scale is 138.404 km/h.
- How many km/h is EF4 EF scale?
- EF4 EF scale is 267.151 km/h.
The units
About these units
Enhanced Fujita rating (EF scale)
EF0 to EF5, used in the US and Canada.
Kilometers per hour (km/h)
Wind speed in km/h.
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