Distance divided by time.
Foot per Days to Millimeter per Seconds Converter — ft/d to mm/s
Convert Foot per Days (ft/d) to Millimeter per Seconds (mm/s) using the exact conversion factor (1 foot per days = 0.0035277778 millimeter per seconds). See the formula, worked examples, and conversion table.
Foot 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 3.52777778e-6 / 0.001.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Foot per Days to Millimeter per Seconds
Foot 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 = foot per days × 0.00352777777778
This factor comes from each unit's defined relationship to the category's base unit: 1 foot per days equals 0.00000352777777778 base units, and 1 millimeter per seconds equals 0.001 base units, so dividing one by the other gives the direct foot per days-to-millimeter per seconds factor of 0.00352777777778.
Simple example
1 ft/d × 0.003527777778 = 0.0035277778 mm/s
1 foot per days = 0.0035277778 millimeter per seconds.
Real-world example
10 ft/d × 0.003527777778 = 0.0352777778 mm/s
10 foot per days = 0.0352777778 millimeter per seconds.
Conversion table
| Foot per Days (ft/d) | Millimeter per Seconds (mm/s) |
|---|---|
| 1 ft/d | 0.0035277778 mm/s |
| 5 ft/d | 0.0176388889 mm/s |
| 10 ft/d | 0.0352777778 mm/s |
| 25 ft/d | 0.0881944444 mm/s |
| 50 ft/d | 0.1763888889 mm/s |
| 100 ft/d | 0.3527777778 mm/s |
Reverse conversion: Millimeter per Seconds to Foot per Days
0.0035277778 mm/s × 283.4645669 = 1.000000006 ft/d
0.0035277778 millimeter per seconds = 1.000000006 foot per days.
foot per days = millimeter per seconds × 283.464566929
For a page dedicated to this direction, see Millimeter per Seconds to Foot per Days.
Understanding the Foot per Days (ft/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 foot per days?
1 foot per days equals 0.0035277778 millimeter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert foot per days to millimeter per seconds?
Multiply the foot per days value by 0.003527777778. The converter above does this instantly to whatever precision you set.
How do I convert millimeter per seconds back to foot per days?
Use the reverse factor: 1 millimeter per seconds equals 283.4645669 foot per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a foot per days?
Foot per Days (ft/d) is a unit of speed.
What is a millimeter per seconds?
Millimeter per Seconds (mm/s) is a unit of speed.
Is the foot per days to millimeter per seconds conversion exact?
Yes. Both foot per days and millimeter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.003527777778 used above is exact to as many digits as you choose to display.