Distance divided by time.
Nautical mile per Hours to ft/s Converter — nmi/h to ft/s
Convert Nautical mile per Hours (nmi/h) to ft/s (ft/s) using the exact conversion factor (1 nautical mile per hours = 1.687809857 ft/s). See the formula, worked examples, and conversion table.
Nautical mile per Hours to ft/s 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.
Feet per second.
Result = input x 0.5144444444 / 0.3048.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nautical mile per Hours to ft/s
Nautical mile per Hours and ft/s both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Specifically: Distance divided by time, and feet per second.
Formula
ft/s = nautical mile per hours × 1.6878098571
This factor comes from each unit's defined relationship to the category's base unit: 1 nautical mile per hours equals 0.514444444444 base units, and 1 ft/s equals 0.3048 base units, so dividing one by the other gives the direct nautical mile per hours-to-ft/s factor of 1.6878098571.
Simple example
1 nmi/h × 1.687809857 = 1.687809857 ft/s
1 nautical mile per hours = 1.687809857 ft/s.
Real-world example
10 nmi/h × 1.687809857 = 16.87809857 ft/s
10 nautical mile per hours = 16.87809857 ft/s.
Conversion table
| Nautical mile per Hours (nmi/h) | ft/s (ft/s) |
|---|---|
| 1 nmi/h | 1.687809857 ft/s |
| 5 nmi/h | 8.439049286 ft/s |
| 10 nmi/h | 16.87809857 ft/s |
| 25 nmi/h | 42.19524643 ft/s |
| 50 nmi/h | 84.39049286 ft/s |
| 100 nmi/h | 168.7809857 ft/s |
Reverse conversion: ft/s to Nautical mile per Hours
1.687809857 ft/s × 0.5924838013 = 0.9999999999 nmi/h
1.687809857 ft/s = 0.9999999999 nautical mile per hours.
nautical mile per hours = ft/s × 0.592483801296
For a page dedicated to this direction, see ft/s to Nautical mile per Hours.
Understanding the Nautical mile per Hours (nmi/h)
Distance divided by time.
Understanding the ft/s (ft/s)
Feet per second.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ft/s are in 1 nautical mile per hours?
1 nautical mile per hours equals 1.687809857 ft/s, using the exact defined conversion factor rather than an estimate.
How do I convert nautical mile per hours to ft/s?
Multiply the nautical mile per hours value by 1.687809857. The converter above does this instantly to whatever precision you set.
How do I convert ft/s back to nautical mile per hours?
Use the reverse factor: 1 ft/s equals 0.5924838013 nautical mile per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a nautical mile per hours?
Nautical mile per Hours (nmi/h) is a unit of speed.
What is a ft/s?
ft/s (ft/s) is a unit of speed.
Is the nautical mile per hours to ft/s conversion exact?
Yes. Both nautical mile per hours and ft/s are defined by fixed standards rather than physical artifacts, so the factor of 1.687809857 used above is exact to as many digits as you choose to display.