Distance divided by time.
Millimeter per Days to Millimeter per Seconds Converter — mm/d to mm/s
Convert Millimeter per Days (mm/d) to Millimeter per Seconds (mm/s) using the exact conversion factor (1 millimeter per days = 0.0000115741 millimeter per seconds). See the formula, worked examples, and conversion table.
Millimeter per Days to Millimeter per Seconds 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 / 0.001.
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 Seconds
Millimeter per Days and Millimeter per Seconds 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 seconds = millimeter per days × 0.0000115740740741
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 seconds equals 0.001 base units, so dividing one by the other gives the direct millimeter per days-to-millimeter per seconds factor of 0.0000115740740741.
Simple example
1 mm/d × 0.00001157407407 = 0.0000115741 mm/s
1 millimeter per days = 0.0000115741 millimeter per seconds.
Real-world example
10 mm/d × 0.00001157407407 = 0.0001157407 mm/s
10 millimeter per days = 0.0001157407 millimeter per seconds.
Conversion table
| Millimeter per Days (mm/d) | Millimeter per Seconds (mm/s) |
|---|---|
| 1 mm/d | 0.0000115741 mm/s |
| 5 mm/d | 0.0000578704 mm/s |
| 10 mm/d | 0.0001157407 mm/s |
| 25 mm/d | 0.0002893519 mm/s |
| 50 mm/d | 0.0005787037 mm/s |
| 100 mm/d | 0.0011574074 mm/s |
Reverse conversion: Millimeter per Seconds to Millimeter per Days
0.0000115741 mm/s × 86400 = 1.00000224 mm/d
0.0000115741 millimeter per seconds = 1.00000224 millimeter per days.
millimeter per days = millimeter per seconds × 86400
For a page dedicated to this direction, see Millimeter per Seconds to Millimeter per Days.
Understanding the Millimeter per Days (mm/d)
Distance divided by time.
Understanding the Millimeter per Seconds (mm/s)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millimeter per seconds are in 1 millimeter per days?
1 millimeter per days equals 0.0000115741 millimeter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert millimeter per days to millimeter per seconds?
Multiply the millimeter per days value by 0.00001157407407. The converter above does this instantly to whatever precision you set.
How do I convert millimeter per seconds back to millimeter per days?
Use the reverse factor: 1 millimeter per seconds equals 86,400 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 seconds?
Millimeter per Seconds (mm/s) is a unit of speed.
Is the millimeter per days to millimeter per seconds conversion exact?
Yes. Both millimeter per days and millimeter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.00001157407407 used above is exact to as many digits as you choose to display.