Feet per second.
ft/s to Mile per Days Converter — ft/s to mi/d
Convert ft/s (ft/s) to Mile per Days (mi/d) using the exact conversion factor (1 ft/s = 16.36363636 mile per days). See the formula, worked examples, and conversion table.
ft/s to Mile 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 / 0.01862666667.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting ft/s to Mile per Days
ft/s and Mile 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
mile per days = ft/s × 16.3636363636
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 mile per days equals 0.0186266666667 base units, so dividing one by the other gives the direct ft/s-to-mile per days factor of 16.3636363636.
Simple example
1 ft/s × 16.36363636 = 16.36363636 mi/d
1 ft/s = 16.36363636 mile per days.
Real-world example
10 ft/s × 16.36363636 = 163.6363636 mi/d
10 ft/s = 163.6363636 mile per days.
Conversion table
| ft/s (ft/s) | Mile per Days (mi/d) |
|---|---|
| 1 ft/s | 16.36363636 mi/d |
| 5 ft/s | 81.81818182 mi/d |
| 10 ft/s | 163.6363636 mi/d |
| 25 ft/s | 409.0909091 mi/d |
| 50 ft/s | 818.1818182 mi/d |
| 100 ft/s | 1,636.363636 mi/d |
Reverse conversion: Mile per Days to ft/s
16.36363636 mi/d × 0.06111111111 = 0.9999999998 ft/s
16.36363636 mile per days = 0.9999999998 ft/s.
ft/s = mile per days × 0.0611111111111
For a page dedicated to this direction, see Mile per Days to ft/s.
Understanding the ft/s (ft/s)
Feet per second.
Understanding the Mile per Days (mi/d)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many mile per days are in 1 ft/s?
1 ft/s equals 16.36363636 mile per days, using the exact defined conversion factor rather than an estimate.
How do I convert ft/s to mile per days?
Multiply the ft/s value by 16.36363636. The converter above does this instantly to whatever precision you set.
How do I convert mile per days back to ft/s?
Use the reverse factor: 1 mile per days equals 0.0611111111 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 mile per days?
Mile per Days (mi/d) is a unit of speed.
Is the ft/s to mile per days conversion exact?
Yes. Both ft/s and mile per days are defined by fixed standards rather than physical artifacts, so the factor of 16.36363636 used above is exact to as many digits as you choose to display.