Distance divided by time.
Foot per Days to Nautical mile per Seconds Converter — ft/d to nmi/s
Convert Foot per Days (ft/d) to Nautical mile per Seconds (nmi/s) using the exact conversion factor (1 foot per days = 1.904848e-9 nautical mile per seconds). See the formula, worked examples, and conversion table.
Foot per Days to Nautical mile 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 / 1852.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Foot per Days to Nautical mile per Seconds
Foot per Days and Nautical mile 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
nautical mile per seconds = foot per days × 1.904848e-9
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 nautical mile per seconds equals 1852 base units, so dividing one by the other gives the direct foot per days-to-nautical mile per seconds factor of 1.904848e-9.
Simple example
1 ft/d × 1.904848e-9 = 1.904848e-9 nmi/s
1 foot per days = 1.904848e-9 nautical mile per seconds.
Real-world example
10 ft/d × 1.904848e-9 = 1.904848e-8 nmi/s
10 foot per days = 1.904848e-8 nautical mile per seconds.
Conversion table
| Foot per Days (ft/d) | Nautical mile per Seconds (nmi/s) |
|---|---|
| 1 ft/d | 1.904848e-9 nmi/s |
| 5 ft/d | 9.524238e-9 nmi/s |
| 10 ft/d | 1.904848e-8 nmi/s |
| 25 ft/d | 4.762119e-8 nmi/s |
| 50 ft/d | 9.524238e-8 nmi/s |
| 100 ft/d | 1.904848e-7 nmi/s |
Reverse conversion: Nautical mile per Seconds to Foot per Days
1.904848e-9 nmi/s × 524976378 = 1.000000204 ft/d
1.904848e-9 nautical mile per seconds = 1.000000204 foot per days.
foot per days = nautical mile per seconds × 524976377.953
For a page dedicated to this direction, see Nautical mile per Seconds to Foot per Days.
Understanding the Foot per Days (ft/d)
Distance divided by time.
Understanding the Nautical mile per Seconds (nmi/s)
Distance divided by time.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nautical mile per seconds are in 1 foot per days?
1 foot per days equals 1.904848e-9 nautical mile per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert foot per days to nautical mile per seconds?
Multiply the foot per days value by 1.904848e-9. The converter above does this instantly to whatever precision you set.
How do I convert nautical mile per seconds back to foot per days?
Use the reverse factor: 1 nautical mile per seconds equals 524,976,378 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 nautical mile per seconds?
Nautical mile per Seconds (nmi/s) is a unit of speed.
Is the foot per days to nautical mile per seconds conversion exact?
Yes. Both foot per days and nautical mile per seconds are defined by fixed standards rather than physical artifacts, so the factor of 1.904848e-9 used above is exact to as many digits as you choose to display.