40 knots to miles per hour
40 knots = 46.03118 miles per hour
Rounded to a practical precision: 46 mph.
How the calculation works
One knot is 1.15078 miles per hour, so:
40 kn × 1.15078 = 46.03118 mphReversing it, 46.03118 miles per hour ÷ 1.15078 returns 40 knots.
Nearby values
| Knots | Miles Per Hour |
|---|---|
| 36 kn | 41.42806 mph |
| 37 kn | 42.57884 mph |
| 38 kn | 43.72962 mph |
| 39 kn | 44.8804 mph |
| 40 kn | 46.03118 mph |
| 41 kn | 47.18196 mph |
| 42 kn | 48.33274 mph |
| 43 kn | 49.48352 mph |
| 44 kn | 50.6343 mph |
About these units
Knot (kn) — A knot is one nautical mile per hour and is the speed unit used at sea and in aviation.
Mile per hour (mph) — Miles per hour is the road speed unit of the United States and United Kingdom.
Frequently asked questions
How many miles per hour is 40 knots?
40 knots is 46.03118 miles per hour.
How do I convert knots to miles per hour myself?
Multiply by 1.15078. To go back, divide by 1.15078 — or multiply by 0.868976.
Is this figure exact?
The conversion factor between the knot and the mile per hour is fixed by definition. The figure above is rounded for readability; the converter carries full precision.
Convert other values
- 1 knots to miles per hour
- 5 knots to miles per hour
- 10 knots to miles per hour
- 15 knots to miles per hour
- 20 knots to miles per hour
- 25 knots to miles per hour
- 30 knots to miles per hour
- 35 knots to miles per hour
- 40 knots to miles per hour
- 45 knots to miles per hour
- 50 knots to miles per hour
- 55 knots to miles per hour
- 60 knots to miles per hour
- 65 knots to miles per hour
- 70 knots to miles per hour
- 75 knots to miles per hour
- 80 knots to miles per hour
- 90 knots to miles per hour
- 100 knots to miles per hour
- 110 knots to miles per hour
- 120 knots to miles per hour
- 130 knots to miles per hour
- 140 knots to miles per hour
- 150 knots to miles per hour
- 200 knots to miles per hour
- 250 knots to miles per hour
- 300 knots to miles per hour
Full knots to miles per hour converter · All speed converters