Knots to Saffir–Simpson category
Type a value in kn to get it in Saffir–Simpson 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: Saffir–Simpson to kn
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 kn to Saffir–Simpson
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: 113 kn = Cat 4 Saffir–Simpson.
Every unit
That storm in every unit
Tables
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 |
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 |
Quick answers
Quick answers
- How many Saffir–Simpson is 1 kn?
- 1 kn is TD Saffir–Simpson.
- How many Saffir–Simpson is 10 kn?
- 10 kn is TD Saffir–Simpson.
- How many Saffir–Simpson is 113 kn?
- 113 kn is Cat 4 Saffir–Simpson.
The units
About these units
Knots (kn)
Nautical miles per hour, the forecasters’ unit.
Saffir–Simpson category (Saffir–Simpson)
Categories 1 to 5; TS is a tropical storm, TD a depression.
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