This help page is a guide to tropical cyclone wind conversions between knots, miles per hour (mph), and kilometers per hour (km/h), three ways to measure wind intensity. Also, it provides the resulting Accumulated cyclone energy (ACE) from a storm of that intensity. When entering a wind speed into a template, use knots as the number to get the correct wind speed in mph and/or kph. The following table displays all conversions up to 215 mph. To request further conversion/template help, please contact an admin.
Knots | MPH | KM/H | ACE | Strength |
---|---|---|---|---|
20 | 25 | 35 | 0 | Depression |
25 | 30 | 45 | 0 | Depression |
30 | 35 | 55 | 0 | Depression |
35 | 40 | 65 | 0.1225 | Storm |
40 | 45 | 75 | 0.1600 | Storm |
45 | 50 | 85 | 0.2025 | Storm |
50 | 60 | 95 | 0.2500 | Storm |
55 | 65 | 100 | 0.3025 | Storm |
60 | 70 | 110 | 0.3600 | Storm |
65 | 75 | 120 | 0.4225 | Category 1 |
70 | 80 | 130 | 0.4900 | Category 1 |
75 | 85 | 140 | 0.5625 | Category 1 |
80 | 90 | 150 | 0.6400 | Category 1 |
85 | 100 | 155 | 0.7225 | Category 2 |
90 | 105 | 165 | 0.8100 | Category 2 |
95 | 110 | 175 | 0.9025 | Category 2 |
100 | 115 | 185 | 1.0000 | Category 3 |
105 | 120 | 195 | 1.1025 | Category 3 |
110 | 125 | 205 | 1.2100 | Category 3 |
115 | 130 | 215 | 1.3225 | Category 4 |
120 | 140 | 220 | 1.4400 | Category 4 |
125 | 145 | 230 | 1.5625 | Category 4 |
130 | 150 | 240 | 1.6900 | Category 4 |
135 | 155 | 250 | 1.8225 | Category 4 |
140 | 160 | 260 | 1.9600 | Category 5 |
145 | 165 | 270 | 2.1025 | Category 5 |
150 | 175 | 280 | 2.2500 | Category 5 |
155 | 180 | 285 | 2.4025 | Category 5 |
160 | 185 | 295 | 2.5600 | Category 5 |
165 | 190 | 305 | 2.7225 | Category 5 |
170 | 195 | 315 | 2.8900 | Category 5 |
175 | 200 | 325 | 3.0625 | Category 5 |
180 | 205 | 335 | 3.2400 | Category 5 |
185 | 215 | 345 | 3.4225 | Category 5 |
Table originally from Money Hurricane/Sandbox.
Temperature conversions
- Originally written by IansVectors and adapted for this page
Celsius to Fahrenheit
Let's say that you want to compare 100 °C to 259 F. However, they are in different units — the easiest way to convert them directly is by using the formula. The freezing point in Celsius, 0 °C, is 32 F, which is added to the simplified variable 1.8C, or in this case, .
As , multiplying it by 1.8 (or 9/5), and then 100, will give you 180. You can then do 180 + 32 to get 212, the final temperature in Fahrenheit. Comparing the two temperatures, you'll see that 259 F is hotter than 100 °C (212 F), or .
Fahrenheit to Celsius
Now, what if you want to convert F to C? That's basically the opposite conversion. Let's compare 100 °C with 256.1 F - for this, we have to use the following formula: .
As , you'll need to subtract 32 from 256.1, giving you 224.1. Dividing it by 1.8 (or 9/5) will give you 124.5, the final temperature in Celsius. Comparing the two temperatures, you'll see that 256.1 F (124.5 °C) is hotter than 100 °C (212 F), or .