Distance divided by time.
Foot per Days to Yard per Seconds Converter — ft/d to yd/s
Convert Foot per Days (ft/d) to Yard per Seconds (yd/s) using the exact conversion factor (1 foot per days = 0.000003858 yard per seconds). See the formula, worked examples, and conversion table.
Foot per Days to Yard 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 / 0.9144.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Foot per Days to Yard per Seconds
Foot per Days and Yard 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
yard per seconds = foot per days × 0.00000385802469136
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 yard per seconds equals 0.9144 base units, so dividing one by the other gives the direct foot per days-to-yard per seconds factor of 0.00000385802469136.
Simple example
1 ft/d × 0.000003858024691 = 0.000003858 yd/s
1 foot per days = 0.000003858 yard per seconds.
Real-world example
10 ft/d × 0.000003858024691 = 0.0000385802 yd/s
10 foot per days = 0.0000385802 yard per seconds.
Conversion table
| Foot per Days (ft/d) | Yard per Seconds (yd/s) |
|---|---|
| 1 ft/d | 0.000003858 yd/s |
| 5 ft/d | 0.0000192901 yd/s |
| 10 ft/d | 0.0000385802 yd/s |
| 25 ft/d | 0.0000964506 yd/s |
| 50 ft/d | 0.0001929012 yd/s |
| 100 ft/d | 0.0003858025 yd/s |
Reverse conversion: Yard per Seconds to Foot per Days
0.000003858 yd/s × 259200 = 0.9999936 ft/d
0.000003858 yard per seconds = 0.9999936 foot per days.
foot per days = yard per seconds × 259200
For a page dedicated to this direction, see Yard per Seconds to Foot per Days.
Understanding the Foot per Days (ft/d)
Distance divided by time.
Understanding the Yard per Seconds (yd/s)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yard per seconds are in 1 foot per days?
1 foot per days equals 0.000003858 yard per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert foot per days to yard per seconds?
Multiply the foot per days value by 0.000003858024691. The converter above does this instantly to whatever precision you set.
How do I convert yard per seconds back to foot per days?
Use the reverse factor: 1 yard per seconds equals 259,200 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 yard per seconds?
Yard per Seconds (yd/s) is a unit of speed.
Is the foot per days to yard per seconds conversion exact?
Yes. Both foot per days and yard per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.000003858024691 used above is exact to as many digits as you choose to display.