Wind conversion reference

Knots m/s mph km/h Beaufort (kts) Saffir-Simpson (kts) Enh. Fujita (m/s) Hurricanes (kts) Knots
0 0 0 0 Tropical depression (-33) 0
1 Light air (1-3)
2 Light breeze (4-6)
5 3 6 9 5
3 Gentle breeze (7-10)
10 5 12 19 10
4 Moderate breeze (11-16)
15 8 17 28 15
5 Fresh breeze (17-21)
20 10 23 37 20
6 Strong breeze (22-27)
25 13 29 46 25
7 High wind, near gale (28-33)
30 15 35 56 30
8 Gale (34-40) Tropical storm (34-63)
35 18 40 65 35
40 21 46 74 40
9 Strong gale (41-47)
45 23 52 83 45
10 Storm (48-55)
50 26 58 93 50
55 28 63 102 55
11 Violent storm (56-63) EF0 Minor or no damage (29-37)
60 31 69 111 60
12 Hurricane (64-) Category 1 (64-82)
65 33 75 120 65
70 36 81 130 70
EF1 Moderate damage (38-49)
75 39 86 139 75
80 41 92 148 80
Category 2 (83-95)
85 44 98 157 85
90 46 104 167 90
95 49 109 176 95
Category 3 (96-112)
EF2 Considerable damage (50-60)
100 51 115 185 Sandy 2012 (100) 100
Irene 2011 (104)
105 54 121 194 105
110 57 127 204 110
Category 4 (113-136)
115 59 132 213 115
EF3 Severe damage (61-73)
120 62 138 222 120
125 64 144 232 125
Ike 2008 (126)
130 67 150 241 Charley 2004 (130) 130
135 69 155 250 135
Category 5 (137-)
140 72 161 259 140
Matthew 2016, Ivan 2004 (143)
EF4 Extreme damage (74-90)
145 75 167 269 145
150 77 173 278 150
Andrew 1992, Katrina 2005 (152)
155 80 178 287 155
Rita 2005 (156)
160 82 184 296 Wilma 2005 (160) 160
165 85 190 306 165
170 87 196 315 170
175 90 201 324 175
EF5 Total destruction of buildings (91-)
180 93 207 333 180
185 95 213 343 185
190 98 219 352 190
195 100 224 361 195
Knots m/s mph km/h Beaufort Saffir-Simpson Enh. Fujita Hurricanes Knots