Distance divided by time.
Foot per Days to Mile per Days Converter — ft/d to mi/d
Convert Foot per Days (ft/d) to Mile per Days (mi/d) using the exact conversion factor (1 foot per days = 0.0001893939 mile per days). See the formula, worked examples, and conversion table.
Foot per Days 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 3.52777778e-6 / 0.01862666667.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Foot per Days to Mile per Days
Foot per Days 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). Both are distance divided by time units.
Formula
mile per days = foot per days × 0.000189393939394
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 mile per days equals 0.0186266666667 base units, so dividing one by the other gives the direct foot per days-to-mile per days factor of 0.000189393939394.
Simple example
1 ft/d × 0.0001893939394 = 0.0001893939 mi/d
1 foot per days = 0.0001893939 mile per days.
Real-world example
10 ft/d × 0.0001893939394 = 0.0018939394 mi/d
10 foot per days = 0.0018939394 mile per days.
Conversion table
| Foot per Days (ft/d) | Mile per Days (mi/d) |
|---|---|
| 1 ft/d | 0.0001893939 mi/d |
| 5 ft/d | 0.0009469697 mi/d |
| 10 ft/d | 0.0018939394 mi/d |
| 25 ft/d | 0.0047348485 mi/d |
| 50 ft/d | 0.009469697 mi/d |
| 100 ft/d | 0.0189393939 mi/d |
Reverse conversion: Mile per Days to Foot per Days
0.0001893939 mi/d × 5280 = 0.999999792 ft/d
0.0001893939 mile per days = 0.999999792 foot per days.
foot per days = mile per days × 5280
For a page dedicated to this direction, see Mile per Days to Foot per Days.
Understanding the Foot per Days (ft/d)
Distance divided by time.
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 foot per days?
1 foot per days equals 0.0001893939 mile per days, using the exact defined conversion factor rather than an estimate.
How do I convert foot per days to mile per days?
Multiply the foot per days value by 0.0001893939394. The converter above does this instantly to whatever precision you set.
How do I convert mile per days back to foot per days?
Use the reverse factor: 1 mile per days equals 5,280 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 mile per days?
Mile per Days (mi/d) is a unit of speed.
Is the foot per days to mile per days conversion exact?
Yes. Both foot per days and mile per days are defined by fixed standards rather than physical artifacts, so the factor of 0.0001893939394 used above is exact to as many digits as you choose to display.