Convert Miles per Hour to Knots — Instantly
Convert miles per hour to knots instantly using the formula knots = mph × 0.868976. Includes a calculator, conversion table, worked examples, and FAQs.
Miles per hour to knots converter
Quick Reference
Miles per Hour to Knots Conversion Table
Common mph to knots conversions at a glance, using the standard relationship 1 mph = 0.868976 knots.
| Miles per Hour (mph) | Calculation | Knots (kn) |
|---|---|---|
| 1 mph | 1 × 0.868976 | 0.868976 kn |
| 5 mph | 5 × 0.868976 | 4.344881 kn |
| 10 mph | 10 × 0.868976 | 8.689762 kn |
| 20 mph | 20 × 0.868976 | 17.379525 kn |
| 30 mph | 30 × 0.868976 | 26.069287 kn |
| 40 mph | 40 × 0.868976 | 34.759050 kn |
| 50 mph | 50 × 0.868976 | 43.448812 kn |
| 60 mph | 60 × 0.868976 | 52.138575 kn |
| 70 mph | 70 × 0.868976 | 60.828337 kn |
| 80 mph | 80 × 0.868976 | 69.518099 kn |
| 90 mph | 90 × 0.868976 | 78.207862 kn |
| 100 mph | 100 × 0.868976 | 86.897624 kn |
| 120 mph | 120 × 0.868976 | 104.277149 kn |
Step-by-Step
How to Convert Miles per Hour to Knots
Converting mph to knots is simple when you multiply the speed by 0.868976.
The Formula
Miles per hour and knots are both speed units, but they are used in different settings. Miles per hour are common for road travel, while knots are standard in marine navigation, sailing, aviation, and meteorology.
To convert knots back to miles per hour, divide by 0.868976.
How to Turn mph into Knots — Step by Step
Write down the speed value
Identify the number of miles per hour you want to convert — for example, 60 mph.
Multiply by 0.868976
60 mph × 0.868976 = 52.138575 knots. This gives you the equivalent speed in knots.
Label your answer
Always write the unit (kn or knots) after the number so the result is clear and unambiguous.
mph vs knots
What Is the Difference Between Miles per Hour and Knots?
Miles per hour and knots are both units of speed. Miles per hour are commonly used for road speeds, especially in the United States and United Kingdom, while knots are widely used in boating, shipping, aviation, and weather reporting.
A knot means one nautical mile per hour. The relationship used on this page is 1 mph = 0.868976 knots. To convert miles per hour to knots, multiply the number of mph by 0.868976.
For example, 30 mph = 26.069287 knots, 60 mph = 52.138575 knots, and 100 mph = 86.897624 knots.
This conversion is useful for comparing road-speed values with nautical or aviation speed measurements in a consistent way.
Worked Examples
Sample mph to Knots Calculations
Here is how to calculate miles per hour to knots for commonly searched values.
10 mph to knots
10 × 0.868976 = 8.689762 knots. Ten miles per hour equals about 8.69 knots.
20 mph to knots
20 × 0.868976 = 17.379525 knots. Twenty miles per hour equals about 17.38 knots.
30 mph to knots
30 × 0.868976 = 26.069287 knots. Thirty miles per hour equals about 26.07 knots.
50 mph to knots
50 × 0.868976 = 43.448812 knots. Fifty miles per hour equals about 43.45 knots.
60 mph to knots
60 × 0.868976 = 52.138575 knots. Sixty miles per hour equals about 52.14 knots.
80 mph to knots
80 × 0.868976 = 69.518099 knots. Eighty miles per hour equals about 69.52 knots.
100 mph to knots
100 × 0.868976 = 86.897624 knots. One hundred miles per hour equals about 86.90 knots.
120 mph to knots
120 × 0.868976 = 104.277149 knots. One hundred twenty miles per hour equals about 104.28 knots.
FAQ
Frequently Asked Questions
Everything you need to know about converting miles per hour to knots.