Saffir–Simpson category to knots
Type a value in Saffir–Simpson to get it in kn instantly.
That's 1.04× as strong as Hurricane Katrina at landfall (2005), while Hurricane Andrew at landfall (1992) is 1.27× stronger. Its wind pushes about 3.1× as hard as the weakest hurricane’s.
Convert the other way: kn to Saffir–Simpson
What it means
How strong is that storm?
One-minute sustained winds, US National Hurricane Center bands. A category number between two whole ones places the wind within that band.
The math
How to convert Saffir–Simpson to kn
The categories are wind-speed bands: Cat 1 = 74–95 mph, Cat 2 = 96–110, Cat 3 = 111–129, Cat 4 = 130–156, Cat 5 = 157 mph and up.
Example: Cat 4 Saffir–Simpson = 112.967 kn.
Every unit
That storm in every unit
Tables
Saffir–Simpson to kn conversion table
| Saffir–Simpson | kn |
|---|---|
| TS Saffir–Simpson | 33.8901 kn |
| Cat 1 Saffir–Simpson | 64.3042 kn |
| Cat 2 Saffir–Simpson | 83.4217 kn |
| Cat 3 Saffir–Simpson | 96.4564 kn |
| Cat 4 Saffir–Simpson | 112.967 kn |
| Cat 5 Saffir–Simpson | 136.429 kn |
kn to Saffir–Simpson conversion table
| kn | Saffir–Simpson |
|---|---|
| 33.9 kn | TS Saffir–Simpson |
| 64.3 kn | TS Saffir–Simpson |
| 83.4 kn | Cat 1 Saffir–Simpson |
| 96.5 kn | Cat 3 Saffir–Simpson |
| 113 kn | Cat 4 Saffir–Simpson |
| 136 kn | Cat 4 Saffir–Simpson |
Quick answers
Quick answers
- How many kn is Cat 1 Saffir–Simpson?
- Cat 1 Saffir–Simpson is 64.3042 kn.
- How many kn is Cat 4 Saffir–Simpson?
- Cat 4 Saffir–Simpson is 112.967 kn.
The units
About these units
Saffir–Simpson category (Saffir–Simpson)
Categories 1 to 5; TS is a tropical storm, TD a depression.
Knots (kn)
Nautical miles per hour, the forecasters’ unit.
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