Fujita scale (F)
The Fujita scale, introduced by Ted Fujita in 1971, rates tornadoes from F0 to F5 by estimated wind speed.
Convert Fujita scale to any speed unit
3 Fujita scale = 253.5701086 kilometers per hour
Quick facts
- Unit
- Fujita scale
- Symbol
- F
- Measures
- Velocity / Speed
- System
- Wind scales
- Definition
- Tornado wind v = 6.30 × (F + 2)^1.5 m/s, F0 to F5.
- Also written
- F-scale
1 Fujita scale in other units
| Kilometers per hour | 117.8487369 km/h |
| Miles per hour | 73.22781018 mph |
| Meters per second | 32.73576026 m/s |
| Knots | 63.63322729 kn |
| Feet per second | 107.4007883 ft/s |
| Mach (sea level) | 0.09619959524 Ma |
| Speed of light | 1.0919474 × 10-7 c |
| Beaufort force | 11.53127783 Bft |
What is a Fujita scale?
The Fujita scale, introduced by Ted Fujita in 1971, rates tornadoes from F0 to F5 by estimated wind speed. The US replaced it with the Enhanced Fujita scale in 2007, which assigns lower wind speeds to the same damage.
Top Fujita scale conversions
- Fujita scale to kilometers per hour
- Fujita scale to miles per hour
- Fujita scale to meters per second
- Fujita scale to knots
- Fujita scale to feet per second
- Fujita scale to Mach (sea level)
- Fujita scale to speed of light
- Fujita scale to Beaufort force
- Fujita scale to feet per minute
- Fujita scale to kilometers per second
Common amounts of Fujita scale
Convert Fujita scale to all 43 other units
Common
Metric
US & imperial
- F to in/s
- F to mi/min
- F to mi/s
- F to furlong per fortnight
- F to in/h
- F to in/min
- F to yd/s
- F to Admiralty knot
- F to ft/d
- F to ft/h
- F to in/d
- F to yd/min
- F to ftm/min
- F to yd/h
Physics & astronomy
Wind scales
Everyday comparisons
Convert to Fujita scale
- Kilometers per hour to Fujita scale
- Miles per hour to Fujita scale
- Meters per second to Fujita scale
- Knots to Fujita scale
- Feet per second to Fujita scale
- Mach (sea level) to Fujita scale
- Speed of light to Fujita scale
- Beaufort force to Fujita scale
- Feet per minute to Fujita scale
- Kilometers per second to Fujita scale
Frequently asked questions
What is a Fujita scale?
The Fujita scale, introduced by Ted Fujita in 1971, rates tornadoes from F0 to F5 by estimated wind speed.
How is the Fujita scale defined?
Tornado wind v = 6.30 × (F + 2)^1.5 m/s, F0 to F5.
How many kilometers per hour are in a Fujita scale?
One Fujita scale equals 117.8487369 kilometers per hour.
How many miles per hour are in a Fujita scale?
One Fujita scale equals 73.22781018 miles per hour.
How many meters per second are in a Fujita scale?
One Fujita scale equals 32.73576026 meters per second.