Distance divided by time.
Millimeter per Days to Millimeter per Hours Converter — mm/d to mm/h
Convert Millimeter per Days (mm/d) to Millimeter per Hours (mm/h) using the exact conversion factor (1 millimeter per days = 0.0416666667 millimeter per hours). See the formula, worked examples, and conversion table.
Millimeter per Days to Millimeter per Hours 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 1.15740741e-8 / 2.77777778e-7.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Millimeter per Days to Millimeter per Hours
Millimeter per Days and Millimeter per Hours 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
millimeter per hours = millimeter per days × 0.0416666666667
This factor comes from each unit's defined relationship to the category's base unit: 1 millimeter per days equals 1.157407e-8 base units, and 1 millimeter per hours equals 2.777778e-7 base units, so dividing one by the other gives the direct millimeter per days-to-millimeter per hours factor of 0.0416666666667.
Simple example
1 mm/d × 0.04166666667 = 0.0416666667 mm/h
1 millimeter per days = 0.0416666667 millimeter per hours.
Real-world example
10 mm/d × 0.04166666667 = 0.4166666667 mm/h
10 millimeter per days = 0.4166666667 millimeter per hours.
Conversion table
| Millimeter per Days (mm/d) | Millimeter per Hours (mm/h) |
|---|---|
| 1 mm/d | 0.0416666667 mm/h |
| 5 mm/d | 0.2083333333 mm/h |
| 10 mm/d | 0.4166666667 mm/h |
| 25 mm/d | 1.041666667 mm/h |
| 50 mm/d | 2.083333333 mm/h |
| 100 mm/d | 4.166666667 mm/h |
Reverse conversion: Millimeter per Hours to Millimeter per Days
0.0416666667 mm/h × 24 = 1.000000001 mm/d
0.0416666667 millimeter per hours = 1.000000001 millimeter per days.
millimeter per days = millimeter per hours × 24
For a page dedicated to this direction, see Millimeter per Hours to Millimeter per Days.
Understanding the Millimeter per Days (mm/d)
Distance divided by time.
Understanding the Millimeter per Hours (mm/h)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millimeter per hours are in 1 millimeter per days?
1 millimeter per days equals 0.0416666667 millimeter per hours, using the exact defined conversion factor rather than an estimate.
How do I convert millimeter per days to millimeter per hours?
Multiply the millimeter per days value by 0.04166666667. The converter above does this instantly to whatever precision you set.
How do I convert millimeter per hours back to millimeter per days?
Use the reverse factor: 1 millimeter per hours equals 24 millimeter per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a millimeter per days?
Millimeter per Days (mm/d) is a unit of speed.
What is a millimeter per hours?
Millimeter per Hours (mm/h) is a unit of speed.
Is the millimeter per days to millimeter per hours conversion exact?
Yes. Both millimeter per days and millimeter per hours are defined by fixed standards rather than physical artifacts, so the factor of 0.04166666667 used above is exact to as many digits as you choose to display.