30 Knots = 55.56 Kilometers per Hour
250 knots = 287.7 mph
To convert knots to miles per hour, you can multiply the speed in knots by 1.15078. Therefore, 70 knots is approximately 80.6 miles per hour.
40 knots=46.0311779 miles per hour
439 knots=505.192178 miles per hour
36 knots=41.4280601 miles per hour
41 Knots is 47.19 miles per hour.
475 knots = 546.62 mph
287.631 knots.
1 mph = 0.87 knots
A knot is one nautical mile per hour, equivalent to about 1.151 mph. Divide by this number.
19 knots = 21.865 mph
1.15 knots = 1 mph