81 knot ≈ 136.713 ftps. To convert knots to feet per second, multiply by 1.6878099: 81 × 1.6878099 = 136.713.
How to convert knots to feet per second
ftps = knot × 1.6878099
- 1 knot = 1.6878099 ftps (and 1 ftps = 0.5924838 knot).
- Multiply the amount by the factor: 81 × 1.6878099 = 136.713.
- Answer: 81 knot ≈ 136.713 ftps (rounded to 6 significant figures).
Knots to Feet Per Second table
| Knots (knot) | Feet Per Second (ftps) |
|---|---|
| 76 knot | 128.274 ftps |
| 77 knot | 129.961 ftps |
| 78 knot | 131.649 ftps |
| 79 knot | 133.337 ftps |
| 80 knot | 135.025 ftps |
| 81 knot | 136.713 ftps |
| 82 knot | 138.4 ftps |
| 83 knot | 140.088 ftps |
| 84 knot | 141.776 ftps |
| 85 knot | 143.464 ftps |
| 86 knot | 145.152 ftps |
| knot | ftps |
|---|---|
| 1 knot | 1.6878 ftps |
| 5 knot | 8.439 ftps |
| 10 knot | 16.8781 ftps |
| 50 knot | 84.3905 ftps |
| 100 knot | 168.781 ftps |
| 1,000 knot | 1,687.81 ftps |