Mile per Hour to Knot Converter
Speed · unit-converter
Convert Mile per Hour to Knot with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through meters per second with fixed definitions (knot, international mile, Mach 1 = ISA sea level, Beaufort WMO bands at 10 m, vacuum c, plus linear SI and imperial rate units like km/s, fpm, ips, cm/s, and mm/s).
About Mile per Hour
Miles per hour is used for road speeds primarily in the United States, the United Kingdom, and some other countries.
About Knot
The knot is one nautical mile per hour (1852 m/h). It is standard in maritime and aviation navigation.
How to convert miles per hour to knots
1 mile per hour equals 0.8689762419006478 knot in this tool (via m/s):
1 mph = (0.44704 m/s ÷ 0.5144444444444445 m/s) knots = 0.8689762419006478 knots
Each mile per hour carries 0.44704 m/s and each knot 0.5144444444444445 m/s, so one mph equals 0.44704 ÷ 0.5144444444444445 knots.
Let v(mph) be the numeric speed in Mile per Hour (mph), and v(knots) in Knot (knots). Then:
v(knots) = v(mph) × (0.44704 / 0.5144444444444445)
Equivalently, divide by how many mph fit into one knots (m/s per knots divided by m/s per mph):
v(knots) = v(mph) ÷ 1.1507794480235427
Examples
Example #1: Convert 10 mph to knot
10 mph = 10 mph × (0.44704/0.5144444444444445) knots = 8.689762419 knots
10 mph = 10 mph ÷ 1.1507794480235427 = 8.689762419 knots
Example #2: Convert 50 mph to knot
50 mph = 50 mph × (0.44704/0.5144444444444445) knots = 43.448812095 knots
50 mph = 50 mph ÷ 1.1507794480235427 = 43.448812095 knots
Summary
To convert Mile per Hour to Knot, multiply the value in mph by (0.44704 m/s per mph) / (0.5144444444444445 m/s per knots). Equivalently: value_knots = value_mph × (0.44704 / 0.5144444444444445). Numerically, 1 mph equals 0.8689762419006478 knots.
Relationship context
Both Mile per Hour and Knot are expressed as fixed multiples of meters per second in this tool. Converting multiplies by the ratio of m/s per mph to m/s per knots, so results stay consistent with SI-based definitions (international mile, knot, feet, etc.).
Conversion tables
| Mile per Hour (mph) | Knot (knots) |
|---|---|
| 0.1 | 0.0868976242 |
| 1 | 0.8689762419 |
| 2 | 1.7379524838 |
| 3 | 2.6069287257 |
| 4 | 3.4759049676 |
| 5 | 4.3448812095 |
| 6 | 5.2138574514 |
| 7 | 6.0828336933 |
| 8 | 6.9518099352 |
| 9 | 7.8207861771 |
| Mile per Hour (mph) | Knot (knots) |
|---|---|
| 10 | 8.689762419 |
| 20 | 17.379524838 |
| 30 | 26.069287257 |
| 40 | 34.759049676 |
| 50 | 43.448812095 |
| 60 | 52.138574514 |
| 70 | 60.828336933 |
| 80 | 69.5180993521 |
| 90 | 78.2078617711 |
| 100 | 86.8976241901 |