Distance divided by time.
Mile per Days to Nautical mile per Days Converter — mi/d to nmi/d
Convert Mile per Days (mi/d) to Nautical mile per Days (nmi/d) using the exact conversion factor (1 mile per days = 0.8689762419 nautical mile per days). See the formula, worked examples, and conversion table.
Mile per Days to Nautical mile per Days 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.
Distance divided by time.
Result = input x 0.01862666667 / 0.02143518519.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Mile per Days to Nautical mile per Days
Mile per Days and Nautical mile per Days both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Both are distance divided by time units.
Formula
nautical mile per days = mile per days × 0.868976241901
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 nautical mile per days equals 0.0214351851852 base units, so dividing one by the other gives the direct mile per days-to-nautical mile per days factor of 0.868976241901.
Simple example
1 mi/d × 0.8689762419 = 0.8689762419 nmi/d
1 mile per days = 0.8689762419 nautical mile per days.
Real-world example
10 mi/d × 0.8689762419 = 8.689762419 nmi/d
10 mile per days = 8.689762419 nautical mile per days.
Conversion table
| Mile per Days (mi/d) | Nautical mile per Days (nmi/d) |
|---|---|
| 1 mi/d | 0.8689762419 nmi/d |
| 5 mi/d | 4.34488121 nmi/d |
| 10 mi/d | 8.689762419 nmi/d |
| 25 mi/d | 21.72440605 nmi/d |
| 50 mi/d | 43.4488121 nmi/d |
| 100 mi/d | 86.89762419 nmi/d |
Reverse conversion: Nautical mile per Days to Mile per Days
0.8689762419 nmi/d × 1.150779448 = 1 mi/d
0.8689762419 nautical mile per days = 1 mile per days.
mile per days = nautical mile per days × 1.15077944802
For a page dedicated to this direction, see Nautical mile per Days to Mile per Days.
Understanding the Mile per Days (mi/d)
Distance divided by time.
Understanding the Nautical mile per Days (nmi/d)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nautical mile per days are in 1 mile per days?
1 mile per days equals 0.8689762419 nautical mile per days, using the exact defined conversion factor rather than an estimate.
How do I convert mile per days to nautical mile per days?
Multiply the mile per days value by 0.8689762419. The converter above does this instantly to whatever precision you set.
How do I convert nautical mile per days back to mile per days?
Use the reverse factor: 1 nautical mile per days equals 1.150779448 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 nautical mile per days?
Nautical mile per Days (nmi/d) is a unit of speed.
Is the mile per days to nautical mile per days conversion exact?
Yes. Both mile per days and nautical mile per days are defined by fixed standards rather than physical artifacts, so the factor of 0.8689762419 used above is exact to as many digits as you choose to display.