Distance divided by time.
Millimeter per Seconds to Foot per Days Converter — mm/s to ft/d
Convert Millimeter per Seconds (mm/s) to Foot per Days (ft/d) using the exact conversion factor (1 millimeter per seconds = 283.4645669 foot per days). See the formula, worked examples, and conversion table.
Millimeter per Seconds to Foot per Days 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 0.001 / 3.52777778e-6.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Millimeter per Seconds to Foot per Days
Millimeter per Seconds and Foot per Days 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
foot per days = millimeter per seconds × 283.464566929
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 foot per days equals 0.00000352777777778 base units, so dividing one by the other gives the direct millimeter per seconds-to-foot per days factor of 283.464566929.
Simple example
1 mm/s × 283.4645669 = 283.4645669 ft/d
1 millimeter per seconds = 283.4645669 foot per days.
Real-world example
10 mm/s × 283.4645669 = 2,834.645669 ft/d
10 millimeter per seconds = 2,834.645669 foot per days.
Conversion table
| Millimeter per Seconds (mm/s) | Foot per Days (ft/d) |
|---|---|
| 1 mm/s | 283.4645669 ft/d |
| 5 mm/s | 1,417.322835 ft/d |
| 10 mm/s | 2,834.645669 ft/d |
| 25 mm/s | 7,086.614173 ft/d |
| 50 mm/s | 14,173.22835 ft/d |
| 100 mm/s | 28,346.45669 ft/d |
Reverse conversion: Foot per Days to Millimeter per Seconds
283.4645669 ft/d × 0.003527777778 = 0.9999999999 mm/s
283.4645669 foot per days = 0.9999999999 millimeter per seconds.
millimeter per seconds = foot per days × 0.00352777777778
For a page dedicated to this direction, see Foot per Days to Millimeter per Seconds.
Understanding the Millimeter per Seconds (mm/s)
Distance divided by time.
Understanding the Foot per Days (ft/d)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many foot per days are in 1 millimeter per seconds?
1 millimeter per seconds equals 283.4645669 foot per days, using the exact defined conversion factor rather than an estimate.
How do I convert millimeter per seconds to foot per days?
Multiply the millimeter per seconds value by 283.4645669. The converter above does this instantly to whatever precision you set.
How do I convert foot per days back to millimeter per seconds?
Use the reverse factor: 1 foot per days equals 0.0035277778 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 foot per days?
Foot per Days (ft/d) is a unit of speed.
Is the millimeter per seconds to foot per days conversion exact?
Yes. Both millimeter per seconds and foot per days are defined by fixed standards rather than physical artifacts, so the factor of 283.4645669 used above is exact to as many digits as you choose to display.