Feet per second.
ft/s to Foot per Days Converter — ft/s to ft/d
Convert ft/s (ft/s) to Foot per Days (ft/d) using the exact conversion factor (1 ft/s = 86,400 foot per days). See the formula, worked examples, and conversion table.
ft/s 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 0.3048 / 3.52777778e-6.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting ft/s to Foot per Days
ft/s 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). Specifically: Feet per second, and distance divided by time.
Formula
foot per days = ft/s × 86400
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 foot per days equals 0.00000352777777778 base units, so dividing one by the other gives the direct ft/s-to-foot per days factor of 86400.
Simple example
1 ft/s × 86400 = 86,400 ft/d
1 ft/s = 86,400 foot per days.
Real-world example
10 ft/s × 86400 = 864,000 ft/d
10 ft/s = 864,000 foot per days.
Conversion table
| ft/s (ft/s) | Foot per Days (ft/d) |
|---|---|
| 1 ft/s | 86,400 ft/d |
| 5 ft/s | 432,000 ft/d |
| 10 ft/s | 864,000 ft/d |
| 25 ft/s | 2,160,000 ft/d |
| 50 ft/s | 4,320,000 ft/d |
| 100 ft/s | 8,640,000 ft/d |
Reverse conversion: Foot per Days to ft/s
1 ft/d × 0.00001157407407 = 0.0000115741 ft/s
1 foot per days = 0.0000115741 ft/s.
ft/s = foot per days × 0.0000115740740741
For a page dedicated to this direction, see Foot per Days to ft/s.
Understanding the ft/s (ft/s)
Feet per second.
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 ft/s?
1 ft/s equals 86,400 foot per days, using the exact defined conversion factor rather than an estimate.
How do I convert ft/s to foot per days?
Multiply the ft/s value by 86400. The converter above does this instantly to whatever precision you set.
How do I convert foot per days back to ft/s?
Use the reverse factor: 1 foot per days equals 0.0000115741 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 foot per days?
Foot per Days (ft/d) is a unit of speed.
Is the ft/s to foot per days conversion exact?
Yes. Both ft/s and foot per days are defined by fixed standards rather than physical artifacts, so the factor of 86400 used above is exact to as many digits as you choose to display.