1. How to convert mph to knots
The conversion is a single multiplication: kn = mph × 0.868976241901. Both units are defined
against the same base — the metre per second (m/s) — so the factor is fixed and the result
is exact to the precision shown.
Worked at the two values people ask for most: 1 mph = 0.86897624 kn and
60 mph = 52.138575 kn. Going the other way, mph = kn × 1.15077944802, so
1 kn = 1.1507794 mph — a direction with its own page, knots to mph.
Results are given to eight significant figures. That is more precision than most jobs need — for a rough figure, treat 1 mph as about 0.86897624 kn and adjust — but rounding early and multiplying afterwards is how a small error becomes a visible one, so the full figure is what the converter carries.
2. Miles per hour to Knots conversion table
| Miles per hour (mph) | Knots (kn) |
|---|---|
| 1 mph | 0.86897624 kn |
| 5 mph | 4.3448812 kn |
| 10 mph | 8.6897624 kn |
| 20 mph | 17.379525 kn |
| 30 mph | 26.069287 kn |
| 50 mph | 43.448812 kn |
| 60 mph | 52.138575 kn |
| 80 mph | 69.518099 kn |
| 100 mph | 86.897624 kn |
| 120 mph | 104.27715 kn |
Every row is the same factor applied — nothing in the table is a special case, and any value in between behaves the same way. Type your own figure into the converter above and the Formula tile shows the arithmetic being used, so the result is checkable rather than taken on trust.
3. What the two units are
- Miles per hour (mph). One mph is 0.44704 m/s.
- Knots (kn). One kn is 0.51444444 m/s.
Both are converted through the metre per second (m/s): the value is multiplied by its own unit's factor to reach the base, then divided by the target unit's factor to leave it. No direct mph to knots factor has to exist or be kept correct, which is also why the converter can show the same value in all 5 speed units at once.
Speed converts through metres per second. A knot is one nautical mile per hour, which makes it exactly 1.852 km/h — the reason aviation and shipping still use it is that one knot for one hour is one minute of latitude, so it maps onto a chart without arithmetic.
If the pair you actually want is not this one, the full unit converter runs every 5 speed units off the same factor table, along with 11 other categories of measurement.
4. Miles per hour to Knots FAQs
How do I convert mph to knots?
Multiply by 0.868976241901. 1 mph = 0.86897624 kn, and 60 mph = 52.138575 kn. The factor is exact to the precision shown, so the only rounding is the one you choose to do at the end.
How many knots is 1 mph?
1 mph = 0.86897624 kn. The full formula is kn = mph × 0.868976241901, and 1 kn = 1.1507794 mph going the other way.
What is 60 mph in kn?
60 mph = 52.138575 kn. The table above works the same factor through 10 values, and the converter takes any figure you type — including decimals.
How do I convert knots to mph?
mph = kn × 1.15077944802, so 1 kn = 1.1507794 mph. Use the Swap button in the converter to reverse the direction without retyping the value, or open the dedicated knots to mph page.
What exactly is a knot?
One nautical mile per hour, and a nautical mile is exactly 1,852 metres — one minute of latitude. That makes a knot exactly 1.852 km/h, and it is why aviation and shipping still use it: an hour at one knot moves you one minute up the chart.
Is anything I type sent to a server?
No. The factor table ships with the page and every conversion runs in your browser. Nothing is uploaded, logged or written to storage, and the converter keeps working offline once the page has loaded.