Feet per second.
ft/s to Millimeter per Days Converter — ft/s to mm/d
Convert ft/s (ft/s) to Millimeter per Days (mm/d) using the exact conversion factor (1 ft/s = 26,334,720 millimeter per days). See the formula, worked examples, and conversion table.
ft/s to Millimeter 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 0.3048 / 1.15740741e-8.
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 Days
ft/s and Millimeter 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). Specifically: Feet per second, and distance divided by time.
Formula
millimeter per days = ft/s × 26334720
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 days equals 1.157407e-8 base units, so dividing one by the other gives the direct ft/s-to-millimeter per days factor of 26334720.
Simple example
1 ft/s × 26334720 = 26,334,720 mm/d
1 ft/s = 26,334,720 millimeter per days.
Real-world example
10 ft/s × 26334720 = 263,347,200 mm/d
10 ft/s = 263,347,200 millimeter per days.
Conversion table
| ft/s (ft/s) | Millimeter per Days (mm/d) |
|---|---|
| 1 ft/s | 26,334,720 mm/d |
| 5 ft/s | 131,673,600 mm/d |
| 10 ft/s | 263,347,200 mm/d |
| 25 ft/s | 658,368,000 mm/d |
| 50 ft/s | 1,316,736,000 mm/d |
| 100 ft/s | 2,633,472,000 mm/d |
Reverse conversion: Millimeter per Days to ft/s
1 mm/d × 3.797268e-8 = 3.797268e-8 ft/s
1 millimeter per days = 3.797268e-8 ft/s.
ft/s = millimeter per days × 3.797268e-8
For a page dedicated to this direction, see Millimeter per Days to ft/s.
Understanding the ft/s (ft/s)
Feet per second.
Understanding the Millimeter per Days (mm/d)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millimeter per days are in 1 ft/s?
1 ft/s equals 26,334,720 millimeter per days, using the exact defined conversion factor rather than an estimate.
How do I convert ft/s to millimeter per days?
Multiply the ft/s value by 26334720. The converter above does this instantly to whatever precision you set.
How do I convert millimeter per days back to ft/s?
Use the reverse factor: 1 millimeter per days equals 3.797268e-8 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 days?
Millimeter per Days (mm/d) is a unit of speed.
Is the ft/s to millimeter per days conversion exact?
Yes. Both ft/s and millimeter per days are defined by fixed standards rather than physical artifacts, so the factor of 26334720 used above is exact to as many digits as you choose to display.