Miles per hour to Enhanced Fujita rating
Type a value in mph to get it in EF scale instantly.
EF4EF scale
That's 1.35× as strong as a strong EF2 tornado, while a violent EF4 tornado is 1.1× stronger.
Convert the other way: EF scale to mph
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 mph to EF scale
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: 166 mph = EF4 EF scale.
Every unit
That tornado on every scale
Tables
mph to EF scale conversion table
| mph | EF scale |
|---|---|
| 65 mph | EF0 EF scale |
| 86 mph | EF1 EF scale |
| 111 mph | EF2 EF scale |
| 136 mph | EF3 EF scale |
| 166 mph | EF4 EF scale |
| 201 mph | EF5 EF scale |
EF scale to mph conversion table
| EF scale | mph |
|---|---|
| EF0 EF scale | 65 mph |
| EF1 EF scale | 86 mph |
| EF2 EF scale | 111 mph |
| EF3 EF scale | 136 mph |
| EF4 EF scale | 166 mph |
| EF5 EF scale | 201 mph |
Quick answers
Quick answers
- How many EF scale is 1 mph?
- 1 mph is below EF0 EF scale.
- How many EF scale is 10 mph?
- 10 mph is below EF0 EF scale.
- How many EF scale is 166 mph?
- 166 mph is EF4 EF scale.
The units
About these units
Miles per hour (mph)
Wind speed in mph.
Enhanced Fujita rating (EF scale)
EF0 to EF5, used in the US and Canada.
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