Fujita rating (1971) to miles per hour
Type a value in F scale to get it in mph instantly.
158mph
That's 1.28× as strong as a strong EF2 tornado, while a violent EF4 tornado is 1.16× stronger.
Convert the other way: mph to F 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 F 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: F3 F scale = 158 mph.
Every unit
That tornado on every scale
Tables
F scale to mph conversion table
| F scale | mph |
|---|---|
| F1 F scale | 73 mph |
| F2 F scale | 113 mph |
| F3 F scale | 158 mph |
| F4 F scale | 207 mph |
mph to F scale conversion table
| mph | F scale |
|---|---|
| 65 mph | F0 F scale |
| 86 mph | F1 F scale |
| 111 mph | F1 F scale |
| 136 mph | F2 F scale |
| 166 mph | F3 F scale |
| 201 mph | F3 F scale |
Quick answers
Quick answers
- How many mph is F1 F scale?
- F1 F scale is 73 mph.
- How many mph is F3 F scale?
- F3 F scale is 158 mph.
The units
About these units
Fujita rating (1971) (F scale)
The original F0 to F5 scale.
Miles per hour (mph)
Wind speed in mph.
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