Knots to Miles per Hour (kt to mph) Converter
Convert knots to mph and mph to knots instantly.
← Back to Speed Converter
knots to mph – Instant Calculator
Knots (kt)
→
Miles per Hour (mph)
Common Conversion Examples
10 kt = 11.5078 mph
10 knots = 11.5078 mph
20 kt = 23.0156 mph
20 knots = 23.0156 mph
50 kt = 57.539 mph
50 knots = 57.539 mph
Knots to Miles per Hour: Definition, History, Uses, and Examples
Definition
A knot (kt) is one nautical mile per hour. A mile per hour (mph) is one statute mile per hour. The knots to mph formula is: mph = kt × 1.15078. Use this nautical speed to mph converter for boat speed knots to mphand pilot knots to mph calculations.
Origin or History
Sailors historically counted knots in a rope to estimate speed—hence the name. Today the knot is standardized and used by aviation and maritime authorities worldwide, which is why travelers often search convert flight speed knots to mph.
Current Use
- Aviation: aircraft speed knots to mph, approach speeds, and wind components.
- Boating: sailing knots to mph, marina rules, and coastal navigation.
- Weather: hurricane wind knots to mph for public advisories.
Examples
| Knots (kt) | Miles per Hour (mph) | Typical Context |
|---|---|---|
| 10 kt | 11.5078 mph | Light breeze, marina maneuvering |
| 20 kt | 23.0156 mph | Moderate wind, coastal cruising |
| 30 kt | 34.5234 mph | Small craft advisory range |
| 50 kt | 57.539 mph | Gale force wind |
Step-by-step example
Convert 18 knots to mph: 18 × 1.15078 = 20.7140 mph.
Also searched
- knots to mph chart printable
- boat speed knots vs mph explained
- pilot airspeed knots to mph converter
- hurricane wind knots to mph scale
Frequently Asked Questions
How do I convert knots to mph?
Multiply knots by 1.15078. Example: 20 kt × 1.15078 = 23.0156 mph.
Why are knots used in aviation and sailing?
Knots are based on nautical miles, which align with latitude/longitude and navigation charts.
How do I convert mph back to knots?
Divide mph by 1.15078. Example: 30 mph ÷ 1.15078 ≈ 26.069 kt.
What are typical wind speeds in knots?
A light breeze ~10 kt, small craft advisory ~25–33 kt, gale >34 kt.
Is a nautical mile the same as a mile?
No. 1 nautical mile = 1.15078 statute miles (1.852 km).