Spike's Calculators

Calculate the time it takes to travel a certain distance in kilometres based on a speed in knots. A knot is a unit of speed equal to one nautical mile per hour. The symbol used for a knot is kn or kt.

Knots/Kilometres

- enter the distance in kilometres
- the speed in knots

- the distance in kilometres converted to nautical miles
- The distance in kilometres converted to miles
- the knots converted to metres per second
- the knots converted to feet per second
- the time in seconds
- the time in minutes
- the time in decimal hours
- the time in an hour, minute, and second format

time = distance ÷ speed

one kilometre (km) = 0.621371192237334 miles (mi) one kilometre (km) = 0.539956803455724 nautical mile (nmi) one knot = 1 nautical mile (nmi) one knot (kn) = 0.514444444444444 metres per second (m/sec) one knot (kn) = 1.68780985710119 feet per second (ft/sec)

How long will it take to travel 400 kilometres at a speed of 45 knots?

First, convert the kilometres to nautical miles;

400 * 0.539956803455724 = 215.9827

Four hundred kilometres equal 215.9827 nautical miles.

Divide the distance of 215.9827 nautical miles by the speed of 45 knots to get the time in hours;

215.9827 ÷ 45 = 4.799616

It will take 4.799616 hours to travel the 400 kilometres at a speed of 45 knots. 4 hr - 47 min - 59sec

- Kilometres and Speed in Feet per Minute
- Kilometres and Speed in Feet per Second
- Kilometres and Speed in Kilometres per Hour
- Kilometres and Speed in Knots
- Kilometres and Speed in Metres per Minute
- Kilometres and Speed in Metres per Second
- Kilometres and Speed in Miles per Hour
- Miles and Speed in Feet per Minute
- Miles and Speed in Feet per Second
- Miles and Speed in Kilometres per Hour
- Miles and Speed in Knots
- Miles and Speed in Metres per Minute
- Miles and Speed in Metres per Second
- Miles and Speed in Miles per Hour
- Nautical Miles and Speed in Feet per Second
- Nautical Miles and Speed in Knots
- Nautical Miles and Speed in Metres per Second