Miles Per Hour to Knots Converter
Convert miles per hour to knots instantly with this free miles per hour to knots converter. Enter any value to get an accurate speed conversion, plus the formula, the conversion factor and a full reference table.
What is 1 mile per hour in knots?
1 mile per hour is equal to 0.868976242 knots.
1 ÷ 1.15077945 = 0.868976242 knots
1 mile per hour = 0.8689762419 knots
Miles per hour to Knots formula
kn = mph ÷ 1.15077945
The miles per hour to knots conversion factor is 0.868976241901, which is exact by definition. 1 mile per hour = 0.868976241901 knots, and 1 knot = 1.15077944802 miles per hour.
Worked examples
- 2 miles per hour = 1.73795248 knots — 2 ÷ 1.15077945 = 1.73795248 knots
- 6 miles per hour = 5.21385745 knots — 6 ÷ 1.15077945 = 5.21385745 knots
- 10 miles per hour = 8.68976242 knots — 10 ÷ 1.15077945 = 8.68976242 knots
Miles per hour to Knots conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Miles per hour (mph) | Knots (kn) |
|---|---|
| 1 mph | 0.86897624 kn |
| 2 mph | 1.7379525 kn |
| 3 mph | 2.6069287 kn |
| 4 mph | 3.475905 kn |
| 5 mph | 4.3448812 kn |
| 6 mph | 5.2138575 kn |
| 7 mph | 6.0828337 kn |
| 8 mph | 6.9518099 kn |
| 9 mph | 7.8207862 kn |
| 10 mph | 8.6897624 kn |
| 12 mph | 10.427715 kn |
| 15 mph | 13.034644 kn |
| 20 mph | 17.379525 kn |
| 25 mph | 21.724406 kn |
| 30 mph | 26.069287 kn |
| 50 mph | 43.448812 kn |
| 75 mph | 65.173218 kn |
| 100 mph | 86.897624 kn |
| 500 mph | 434.48812 kn |
| 1,000 mph | 868.97624 kn |
When you need to convert miles per hour to knots
- Reading road signs and speed limits abroad.
- Comparing running or cycling pace with training plans from another country.
- Interpreting wind speeds in forecasts and aviation or marine reports.
Common mistakes to avoid
- Dividing when you should multiply. Because 1 mile per hour = 0.868976 knots, the answer should be smaller than the number you started with.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
Round only at the end, and only to the precision your task actually needs. The converter above keeps full double precision internally and rounds for display.
How these units are defined
- Mile per hour (mph): The road-speed unit in the US and UK. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- Knot (kn): One nautical mile per hour, used at sea and in aviation. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
Frequently asked questions
- What is 1 mile per hour in knots?
- 1 mile per hour is equal to 0.868976242 knots.
- How many miles per hour are in one knot?
- There are 1.15077945 miles per hour in 1 knot.
- How do you convert miles per hour to knots?
- Multiply the number of miles per hour by 0.868976242 — or use the formula kn = mph ÷ 1.15077945.
- What is 6 miles per hour in knots?
- 6 miles per hour is 5.21385745 knots. 6 ÷ 1.15077945 = 5.21385745 knots.
- Is the miles per hour to knots conversion exact?
- Yes. The relationship is fixed by definition, so 0.868976241901 is an exact conversion factor — only the displayed result is rounded.