Distance divided by time.
Millimeter per Hours to Centimeter per Seconds Converter — mm/h to cm/s
Convert Millimeter per Hours (mm/h) to Centimeter per Seconds (cm/s) using the exact conversion factor (1 millimeter per hours = 0.0000277778 centimeter per seconds). See the formula, worked examples, and conversion table.
Millimeter per Hours to Centimeter 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 2.77777778e-7 / 0.01.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Millimeter per Hours to Centimeter per Seconds
Millimeter per Hours and Centimeter 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
centimeter per seconds = millimeter per hours × 0.0000277777777778
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 centimeter per seconds equals 0.01 base units, so dividing one by the other gives the direct millimeter per hours-to-centimeter per seconds factor of 0.0000277777777778.
Simple example
1 mm/h × 0.00002777777778 = 0.0000277778 cm/s
1 millimeter per hours = 0.0000277778 centimeter per seconds.
Real-world example
10 mm/h × 0.00002777777778 = 0.0002777778 cm/s
10 millimeter per hours = 0.0002777778 centimeter per seconds.
Conversion table
| Millimeter per Hours (mm/h) | Centimeter per Seconds (cm/s) |
|---|---|
| 1 mm/h | 0.0000277778 cm/s |
| 5 mm/h | 0.0001388889 cm/s |
| 10 mm/h | 0.0002777778 cm/s |
| 25 mm/h | 0.0006944444 cm/s |
| 50 mm/h | 0.0013888889 cm/s |
| 100 mm/h | 0.0027777778 cm/s |
Reverse conversion: Centimeter per Seconds to Millimeter per Hours
0.0000277778 cm/s × 36000 = 1.0000008 mm/h
0.0000277778 centimeter per seconds = 1.0000008 millimeter per hours.
millimeter per hours = centimeter per seconds × 36000
For a page dedicated to this direction, see Centimeter per Seconds to Millimeter per Hours.
Understanding the Millimeter per Hours (mm/h)
Distance divided by time.
Understanding the Centimeter per Seconds (cm/s)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many centimeter per seconds are in 1 millimeter per hours?
1 millimeter per hours equals 0.0000277778 centimeter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert millimeter per hours to centimeter per seconds?
Multiply the millimeter per hours value by 0.00002777777778. The converter above does this instantly to whatever precision you set.
How do I convert centimeter per seconds back to millimeter per hours?
Use the reverse factor: 1 centimeter per seconds equals 36,000 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 centimeter per seconds?
Centimeter per Seconds (cm/s) is a unit of speed.
Is the millimeter per hours to centimeter per seconds conversion exact?
Yes. Both millimeter per hours and centimeter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.00002777777778 used above is exact to as many digits as you choose to display.