Distance divided by time.
Mile per Days to Knots Converter — mi/d to kn
Convert Mile per Days (mi/d) to Knots (kn) using the exact conversion factor (1 mile per days = 0.0362073434 knots). See the formula, worked examples, conversion table, history, and common uses.
Mile per Days to Knots converter
Converter
Speed Converter
Convert road, aviation, marine, lab, and scientific speed units.
Context values
Some unit families need one extra value for a physically accurate result.
A knot is one nautical mile per hour.
Result = input x 0.01862666667 / 0.5144444444.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Mile per Days to Knots
Mile per Days and Knots both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Specifically: Distance divided by time, and a knot is one nautical mile per hour.
Formula
knots = mile per days × 0.0362073434125
This factor comes from each unit's defined relationship to the category's base unit: 1 mile per days equals 0.0186266666667 base units, and 1 knots equals 0.514444444444 base units, so dividing one by the other gives the direct mile per days-to-knots factor of 0.0362073434125.
Simple example
1 mi/d × 0.03620734341 = 0.0362073434 kn
1 mile per days = 0.0362073434 knots.
Real-world example
10 mi/d × 0.03620734341 = 0.3620734341 kn
10 mile per days = 0.3620734341 knots.
Conversion table
| Mile per Days (mi/d) | Knots (kn) |
|---|---|
| 1 mi/d | 0.0362073434 kn |
| 5 mi/d | 0.1810367171 kn |
| 10 mi/d | 0.3620734341 kn |
| 25 mi/d | 0.9051835853 kn |
| 50 mi/d | 1.810367171 kn |
| 100 mi/d | 3.620734341 kn |
Reverse conversion: Knots to Mile per Days
0.0362073434 kn × 27.61870675 = 0.9999999997 mi/d
0.0362073434 knots = 0.9999999997 mile per days.
mile per days = knots × 27.6187067526
For a page dedicated to this direction, see Knots to Mile per Days.
Understanding the Mile per Days (mi/d)
Distance divided by time.
Understanding the Knots
Knots (kn) measures speed. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. It is classified as a Non-SI unit accepted for use with SI (maritime/aviation).
Where it's used: Used internationally in maritime navigation and aviation
Uses of the Knots today
- Ship and boat speed in marine navigation
- Aircraft airspeed and wind speed reporting in aviation
- Marine weather forecasts (wind speed)
History of the Knots
The knot gets its name from an old nautical method of measuring speed: sailors trailed a 'log line' with evenly spaced knots behind a ship and counted how many knots paid out over a fixed time, giving a direct speed reading in 'knots.'
The nautical mile it's based on was itself standardized internationally in 1929 (the International Nautical Mile, 1,852 m exactly), tying the knot to a precise value still used in shipping and aviation today.
Historical origin. Knots was not the invention of a single named person; it developed through the process described above.
Knots — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Lists the knot among accepted non-SI speed units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many knots are in 1 mile per days?
1 mile per days equals 0.0362073434 knots, using the exact defined conversion factor rather than an estimate.
How do I convert mile per days to knots?
Multiply the mile per days value by 0.03620734341. The converter above does this instantly to whatever precision you set.
How do I convert knots back to mile per days?
Use the reverse factor: 1 knots equals 27.61870675 mile per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a mile per days?
Mile per Days (mi/d) is a unit of speed.
What is a knots?
Knots (kn) measures speed. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. It is classified as a Non-SI unit accepted for use with SI (maritime/aviation).
Is the mile per days to knots conversion exact?
Yes. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.