How do I convert miles per hour back to knots?

Use the reverse converter: 1 mile per hour equals 0.868976 kn.

Is this converter accurate?

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert knots to miles per hour, multiply the value by 1.15077945.

mph = kn × 1.15077945

140 kn × 1.15077945 = 161.11 mph

Knot (kn): One nautical mile per hour, used in sailing, aviation and weather reports.
Mile Per Hour (mph): Used for road speed limits in the US and UK. Exactly 0.44704 metres per second.

How do I convert knots to miles per hour?: To convert knots to miles per hour, multiply the value by 1.15077945.
How many miles per hour are in 1 knot?: 1 knot equals 1.15078 mph.
How many miles per hour are in 10 knots?: 10 kn equals 11.5078 mph.
How do I convert miles per hour back to knots?: Use the reverse converter: 1 mile per hour equals 0.868976 kn.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.