20 mph = about 17.4 knots
1 knot is about 1.15 mph 20 knots = 23 mph you may try this online converter next time http://www.rillocenter.com/convert/speed.html
23.02 miles per hour. A knot is a unit of measure for 1 nautical mile per hour. 1 knot=1.151 MPH. Reference the link below:
0.868976 knot per mph
1 knot = 1.15077945 mph
503 knots is approximately 578 mph. The conversion factor is 1 knot = 1.15078 mph.
9 knots= 10.35701414 mph. There are 1.150779349 mph in a knot.
A Knot is a speed of one nautical mile per hour. The conversion to MPH is 1.15077845 to 1. That is 1 knot is 1.15 mph.
One knot is 1.15mph
20 knots is about 23.02 miles per hour (knots x 1.150779448 = mph).
1 knot is 1.15mph, so a knot is slightly faster.
1 knot = 1.151 mph 125 knots x 1.151 mph/knot = 143.875 mph = 144 mph (rounded to 3 sig figs)
The speed of 150 knots is equal to 172.6 mph (the conversion is 1.15077945 miles/nautical mile).