Distance divided by time.
Millimeter per Seconds to ft/s Converter — mm/s to ft/s
Convert Millimeter per Seconds (mm/s) to ft/s (ft/s) using the exact conversion factor (1 millimeter per seconds = 0.0032808399 ft/s). See the formula, worked examples, and conversion table.
Millimeter per Seconds to ft/s 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.
Feet per second.
Result = input x 0.001 / 0.3048.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Millimeter per Seconds to ft/s
Millimeter per Seconds and ft/s both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Specifically: Distance divided by time, and feet per second.
Formula
ft/s = millimeter per seconds × 0.00328083989501
This factor comes from each unit's defined relationship to the category's base unit: 1 millimeter per seconds equals 0.001 base units, and 1 ft/s equals 0.3048 base units, so dividing one by the other gives the direct millimeter per seconds-to-ft/s factor of 0.00328083989501.
Simple example
1 mm/s × 0.003280839895 = 0.0032808399 ft/s
1 millimeter per seconds = 0.0032808399 ft/s.
Real-world example
10 mm/s × 0.003280839895 = 0.032808399 ft/s
10 millimeter per seconds = 0.032808399 ft/s.
Conversion table
| Millimeter per Seconds (mm/s) | ft/s (ft/s) |
|---|---|
| 1 mm/s | 0.0032808399 ft/s |
| 5 mm/s | 0.0164041995 ft/s |
| 10 mm/s | 0.032808399 ft/s |
| 25 mm/s | 0.0820209974 ft/s |
| 50 mm/s | 0.1640419948 ft/s |
| 100 mm/s | 0.3280839895 ft/s |
Reverse conversion: ft/s to Millimeter per Seconds
0.0032808399 ft/s × 304.8 = 1.000000002 mm/s
0.0032808399 ft/s = 1.000000002 millimeter per seconds.
millimeter per seconds = ft/s × 304.8
For a page dedicated to this direction, see ft/s to Millimeter per Seconds.
Understanding the Millimeter per Seconds (mm/s)
Distance divided by time.
Understanding the ft/s (ft/s)
Feet per second.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ft/s are in 1 millimeter per seconds?
1 millimeter per seconds equals 0.0032808399 ft/s, using the exact defined conversion factor rather than an estimate.
How do I convert millimeter per seconds to ft/s?
Multiply the millimeter per seconds value by 0.003280839895. The converter above does this instantly to whatever precision you set.
How do I convert ft/s back to millimeter per seconds?
Use the reverse factor: 1 ft/s equals 304.8 millimeter per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a millimeter per seconds?
Millimeter per Seconds (mm/s) is a unit of speed.
What is a ft/s?
ft/s (ft/s) is a unit of speed.
Is the millimeter per seconds to ft/s conversion exact?
Yes. Both millimeter per seconds and ft/s are defined by fixed standards rather than physical artifacts, so the factor of 0.003280839895 used above is exact to as many digits as you choose to display.