Distance divided by time.
Millimeter per Hours to Nautical mile per Days Converter — mm/h to nmi/d
Convert Millimeter per Hours (mm/h) to Nautical mile per Days (nmi/d) using the exact conversion factor (1 millimeter per hours = 0.000012959 nautical mile per days). See the formula, worked examples, and conversion table.
Millimeter per Hours 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 2.77777778e-7 / 0.02143518519.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Millimeter per Hours to Nautical mile per Days
Millimeter per Hours 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 = millimeter per hours × 0.0000129589632829
This factor comes from each unit's defined relationship to the category's base unit: 1 millimeter per hours equals 2.777778e-7 base units, and 1 nautical mile per days equals 0.0214351851852 base units, so dividing one by the other gives the direct millimeter per hours-to-nautical mile per days factor of 0.0000129589632829.
Simple example
1 mm/h × 0.00001295896328 = 0.000012959 nmi/d
1 millimeter per hours = 0.000012959 nautical mile per days.
Real-world example
10 mm/h × 0.00001295896328 = 0.0001295896 nmi/d
10 millimeter per hours = 0.0001295896 nautical mile per days.
Conversion table
| Millimeter per Hours (mm/h) | Nautical mile per Days (nmi/d) |
|---|---|
| 1 mm/h | 0.000012959 nmi/d |
| 5 mm/h | 0.0000647948 nmi/d |
| 10 mm/h | 0.0001295896 nmi/d |
| 25 mm/h | 0.0003239741 nmi/d |
| 50 mm/h | 0.0006479482 nmi/d |
| 100 mm/h | 0.0012958963 nmi/d |
Reverse conversion: Nautical mile per Days to Millimeter per Hours
0.000012959 nmi/d × 77166.66667 = 1.000002833 mm/h
0.000012959 nautical mile per days = 1.000002833 millimeter per hours.
millimeter per hours = nautical mile per days × 77166.6666667
For a page dedicated to this direction, see Nautical mile per Days to Millimeter per Hours.
Understanding the Millimeter per Hours (mm/h)
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 millimeter per hours?
1 millimeter per hours equals 0.000012959 nautical mile per days, using the exact defined conversion factor rather than an estimate.
How do I convert millimeter per hours to nautical mile per days?
Multiply the millimeter per hours value by 0.00001295896328. The converter above does this instantly to whatever precision you set.
How do I convert nautical mile per days back to millimeter per hours?
Use the reverse factor: 1 nautical mile per days equals 77,166.66667 millimeter per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a millimeter per hours?
Millimeter per Hours (mm/h) 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 millimeter per hours to nautical mile per days conversion exact?
Yes. Both millimeter per hours and nautical mile per days are defined by fixed standards rather than physical artifacts, so the factor of 0.00001295896328 used above is exact to as many digits as you choose to display.