Miles per hour to Beaufort force
Type a value in mph to get it in Bft instantly.
6.002Bft
That's about the same as a strong breeze. That pushes with about 92.57 pascals against a flat wall.
Convert the other way: Bft to mph
What it means
How strong is that wind?
Beaufort numbers describe a band of speeds, not one value. The formula used here gives the middle of each band.
The math
How to convert mph to Bft
The Beaufort scale is not linear: v = 0.836 × B^1.5 m/s, so each force covers a wider band of speed than the one below.
Example: 27.5 mph = 6.00227 Bft.
Every unit
Your wind in every unit
Tables
mph to Bft conversion table
| mph | Bft |
|---|---|
| 1.87 mph | 0.999972 Bft |
| 5.29 mph | 2.00016 Bft |
| 9.72 mph | 3.00057 Bft |
| 15 mph | 4.00701 Bft |
| 20.9 mph | 4.99871 Bft |
| 27.5 mph | 6.00227 Bft |
| 34.6 mph | 6.99537 Bft |
| 42.3 mph | 7.9981 Bft |
| 50.5 mph | 9.00094 Bft |
| 59.1 mph | 9.99582 Bft |
| 68.2 mph | 10.9972 Bft |
| 77.7 mph | 11.9961 Bft |
Bft to mph conversion table
| Bft | mph |
|---|---|
| 1 Bft | 1.87008 mph |
| 2 Bft | 5.28938 mph |
| 3 Bft | 9.71721 mph |
| 4 Bft | 14.9606 mph |
| 5 Bft | 20.9081 mph |
| 6 Bft | 27.4844 mph |
| 7 Bft | 34.6343 mph |
| 8 Bft | 42.3151 mph |
| 9 Bft | 50.4921 mph |
| 10 Bft | 59.1371 mph |
| 11 Bft | 68.2258 mph |
| 12 Bft | 77.7377 mph |
Quick answers
Quick answers
- How many Bft is 1 mph?
- 1 mph is 0.65881 Bft.
- How many Bft is 10 mph?
- 10 mph is 3.05792 Bft.
- How many Bft is 27.5 mph?
- 27.5 mph is 6.00227 Bft.
The units
About these units
Miles per hour (mph)
The US and UK public form of wind speed.
Beaufort force (Bft)
A number from 0 to 12 describing what the wind does, not how fast it moves.
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