Calculate the time it takes to travel a certain distance in nautical miles based on a speed in feet per second.

Formula

time = distance ÷ speed

Conversions

one nautical mile (nmi) = 1.852 kilometres (km)
one nautical mile (nmi) = 1.15077944802354 miles (mi)
one nautical mile (nmi) =  6076.11548556429 feet (ft)
one foot per second (ft/sec) = 0.3048 metres per second (m/sec)
one foot per second (ft/s) = 0.592483801295897 knots International (kn)
one hour (hr) = 60 minutes (min)
one hour (hr) =  3600 seconds (sec)

Example Calculation

How long will it take to travel 1200 nautical miles at a speed of 44 feet per second?

First convert the nautical miles to feet;

1200 *  6076.11548556429 = 7291338.58

1200 nautical miles equal 7291338.58 feet

Divide the distance of  7291338.58 feet by the speed of 44 feet per second to get the time in seconds;

7291338.58 ÷ 44 = 165712.24

It will take 165712.24 seconds to travel the 1200 nautical miles at a speed of 44 feet per second.

Convert the 165712.24 seconds to hours by dividing by 3600 ( there are 3600 seconds in one hour);

165712.24 ÷ 3600 = 46.031

It will take 46.031 hours to travel the 1200 nautical miles at a speed of 44 feet per second.
46 hr - 1 min - 52 sec