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