Feet to Douglas sea state
Type a value in ft to get it in Douglas instantly.
2Douglas
That's 6.2× as rough as rippled water, while a choppy bay is 1.6× rougher. That is sea state 2: smooth.
Convert the other way: Douglas to ft
What it means
How rough is that sea?
Significant wave height: the average of the highest third of waves. Single waves can be twice as high.
The math
How to convert ft to Douglas
Douglas bands: 3 = 0.5–1.25 m, 4 = 1.25–2.5, 5 = 2.5–4, 6 = 4–6, 7 = 6–9, 8 = 9–14, 9 = over 14 m.
Example: 1.64 ft = 2 Douglas.
Every unit
That sea in every unit
Tables
ft to Douglas conversion table
| ft | Douglas |
|---|---|
| 0 ft | 0 Douglas |
| 0.164 ft | 0 Douglas |
| 0.328 ft | 1 Douglas |
| 1.64 ft | 2 Douglas |
| 4.1 ft | 3 Douglas |
| 8.2 ft | 4 Douglas |
| 13.1 ft | 5 Douglas |
| 19.7 ft | 7 Douglas |
| 29.5 ft | 7 Douglas |
| 45.9 ft | 8 Douglas |
Douglas to ft conversion table
| Douglas | ft |
|---|---|
| 0 Douglas | 0 ft |
| 1 Douglas | 0.164042 ft |
| 2 Douglas | 0.328084 ft |
| 3 Douglas | 1.64042 ft |
| 4 Douglas | 4.10105 ft |
| 5 Douglas | 8.2021 ft |
| 6 Douglas | 13.1234 ft |
| 7 Douglas | 19.685 ft |
| 8 Douglas | 29.5276 ft |
| 9 Douglas | 45.9318 ft |
Quick answers
Quick answers
- How many Douglas is 1 ft?
- 1 ft is 2 Douglas.
- How many Douglas is 10 ft?
- 10 ft is 5 Douglas.
- How many Douglas is 1.64 ft?
- 1.64 ft is 2 Douglas.
The units
About these units
Feet (ft)
Significant wave height in feet.
Douglas sea state (Douglas)
Sea state 0 (calm, glassy) to 9 (phenomenal).
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