According to Google's calculator, 400 knots equals 460.311779 miles per hour, based on the rate that 1 knot is equal to 1.15077945 mph. http://www.google.com/search?source=ig&hl=en&rlz=&q=400+knots+to+mph&aq=f
400 knots = 460.3 mph
Use this formula to convert knots to miles per hour: knots x 1.15 = mph25.3 knots x 1.15 = about 29.11 mph
17 knots=19.56 mph
11.507794 miles per hour.
The speed of 150 knots is equal to 172.6 mph (the conversion is 1.15077945 miles/nautical mile).
10 knots = 11.51 mph
387 knots = 445.4 mph
25.89
180 knots is equal to 207.1 MPH
17 knots=19.56 mph
Use this formula to convert knots to miles per hour: knots x 1.15 = mph25.3 knots x 1.15 = about 29.11 mph
i knot in mph is 0.868976242 knots so 503 mph is 437,095049726 knots
2.3 mph
knots is a measure of speed1 knot = 1.852 kilometer per hour1 mile = 1.609344 kilometers70 knots x 1.852 kilometers/hour x 1 mile/1.609344 kilometer= 80.55 miles per houryou may try using the online converter linked below next time.
11 knots = 12.65 mph
About 46 mph
1,040 mph = 903.73 knots
356 mph = 309.35 knots.