Knots to mph Converter
Convert knots to miles per hour for aviation, boating, and weather wind speed.
How It Works
Formula: kn to mph = value × 1.15077945
Example: 1 kn = 1.150779 mph
Note: 1 knot equals 1.1508 miles per hour, based on the nautical mile used in aviation and boating.
Common Uses
Rounding Rule
Rounded to 4 decimal places
Error Margin
±0.0001 mph
Precision Guidance
For aviation, keep 2 decimals. For wind reports, round to 1 decimal.
Common Mistakes
A knot is based on the nautical mile (1.852 km), not the statute mile (1.609 km). Do not treat knots and mph as equal.
Frequently Asked Questions
What is 1 knot in mph?
1 knot equals 1.1508 mph using the conversion (1 knot = 1 nautical mile per hour = 1.15078 mph).
How do I convert knots to mph?
Multiply the knot value by 1.1508. For example, 30 kn × 1.1508 = 34.52 mph.
Why do planes use knots?
Aviation and maritime use knots because the nautical mile matches latitude lines on charts.
Is a knot faster than mph?
Yes, 1 knot (1.15 mph) is slightly faster than 1 mph.
Deep Dive Guide
Knots to MPH Conversion: Guide for Aviation and Marine Speeds
Convert knots to mph for aviation and marine weather reading. 1 knot equals 1.15078 mph, so 20 knots equals 23.02 mph in this practical guide.
Read Full Guide →More Converters You May Like
Last Updated 2026 | This converter was reviewed for accuracy