Feet per second.
ft/s to Millimeter per Hours Converter — ft/s to mm/h
Convert ft/s (ft/s) to Millimeter per Hours (mm/h) using the exact conversion factor (1 ft/s = 1,097,280 millimeter per hours). See the formula, worked examples, and conversion table.
ft/s 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 0.3048 / 2.77777778e-7.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting ft/s to Millimeter per Hours
ft/s 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). Specifically: Feet per second, and distance divided by time.
Formula
millimeter per hours = ft/s × 1097280
This factor comes from each unit's defined relationship to the category's base unit: 1 ft/s equals 0.3048 base units, and 1 millimeter per hours equals 2.777778e-7 base units, so dividing one by the other gives the direct ft/s-to-millimeter per hours factor of 1097280.
Simple example
1 ft/s × 1097280 = 1,097,280 mm/h
1 ft/s = 1,097,280 millimeter per hours.
Real-world example
10 ft/s × 1097280 = 10,972,800 mm/h
10 ft/s = 10,972,800 millimeter per hours.
Conversion table
| ft/s (ft/s) | Millimeter per Hours (mm/h) |
|---|---|
| 1 ft/s | 1,097,280 mm/h |
| 5 ft/s | 5,486,400 mm/h |
| 10 ft/s | 10,972,800 mm/h |
| 25 ft/s | 27,432,000 mm/h |
| 50 ft/s | 54,864,000 mm/h |
| 100 ft/s | 109,728,000 mm/h |
Reverse conversion: Millimeter per Hours to ft/s
1 mm/h × 9.113444e-7 = 9.113444e-7 ft/s
1 millimeter per hours = 9.113444e-7 ft/s.
ft/s = millimeter per hours × 9.113444e-7
For a page dedicated to this direction, see Millimeter per Hours to ft/s.
Understanding the ft/s (ft/s)
Feet per second.
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 ft/s?
1 ft/s equals 1,097,280 millimeter per hours, using the exact defined conversion factor rather than an estimate.
How do I convert ft/s to millimeter per hours?
Multiply the ft/s value by 1097280. The converter above does this instantly to whatever precision you set.
How do I convert millimeter per hours back to ft/s?
Use the reverse factor: 1 millimeter per hours equals 9.113444e-7 ft/s. You can also use the swap control in the converter above to flip the direction instantly.
What is a ft/s?
ft/s (ft/s) is a unit of speed.
What is a millimeter per hours?
Millimeter per Hours (mm/h) is a unit of speed.
Is the ft/s to millimeter per hours conversion exact?
Yes. Both ft/s and millimeter per hours are defined by fixed standards rather than physical artifacts, so the factor of 1097280 used above is exact to as many digits as you choose to display.