How to convert mph to knots
To convert mph to knots, multiply the value by 0.86898 (or divide it by 1.1508).
Step by step: 21 mph to knots
21 mph × 0.86898 = 18.249 kn
mph to knots: values near 21
| mph | kn |
|---|---|
| 16 mph | 13.904 kn |
| 17 mph | 14.773 kn |
| 18 mph | 15.642 kn |
| 19 mph | 16.511 kn |
| 20 mph | 17.38 kn |
| 21 mph | 18.249 kn |
| 22 mph | 19.117 kn |
| 23 mph | 19.986 kn |
| 24 mph | 20.855 kn |
| 25 mph | 21.724 kn |
| 26 mph | 22.593 kn |
Good to know
1 mile per hour = 1.609 km/h and 1 knot = 1.852 km/h (one nautical mile per hour).
Frequently asked questions
What is 21 mph in knots?
21 miles per hour = 18.249 knots.
How do I convert mph to knots?
To convert mph to knots, multiply the value by 0.86898 (or divide it by 1.1508).
How many miles per hour are in 1 knot?
1 knot = 1.1508 miles per hour.
What is 21 mph in knots, rounded?
Rounded to two decimal places: 21 miles per hour ≈ 18.25 knots.
knots to mph
Need the opposite direction? Use the knots to mph converter.