km To Hours (Driving, Walking, + More) Calculator

Convert km to hours of travel time by car, on foot, by bike or by train using typical speeds, or enter your own speed; also finds distance from time.

Calculator Functions

Function	What it does	What it requires
Travel time from distance	Converts a distance in kilometers to hours of travel at an average speed	Requires the distance and a travel mode or an average speed
Distance from travel time	Converts hours of travel to the kilometers covered at an average speed	Requires the travel time and a travel mode or an average speed

The travel mode fills in a typical average speed: walking 5 km/h, brisk walking 6.5 km/h, running 10 km/h, cycling 20 km/h, city driving 50 km/h, highway driving 100 km/h, train 120 km/h, high-speed rail 250 km/h or commercial flight 900 km/h. Any other speed can be typed in as km/h, mph or m/s. Distance goes in as kilometers, miles or meters, and time as hours, minutes or seconds. A travel time is also shown in hours and minutes, in minutes and in seconds, and a distance in miles and meters.

Km to Hours Formulas

Kilometers measure distance and hours measure time, so a number of kilometers has no fixed value in hours. The answer depends on the speed. A speed in mph is multiplied by 1.609344 to get km/h [1], and a speed in m/s is multiplied by 3.6.

Travel time from distance

The distance is divided by the average speed. At the highway driving speed of 100 km/h, 100 km takes 100 ÷ 100 = 1 hour and 150 km takes 1.5 hours, which is 1 h 30 min. The same 100 km takes 2 hours at 50 km/h, 5 hours by bicycle at 20 km/h and 20 hours on foot at 5 km/h.

Distance from travel time

Going from hours to km, the travel time is multiplied by the average speed. 2.5 hours at 100 km/h covers 250 km, and 45 minutes of cycling at 20 km/h covers 0.75 × 20 = 15 km.

Km to Hours at Common Speeds

By car, 1 km takes 0.02 hours (1.2 minutes) at 50 km/h and 0.01 hours (36 seconds) at 100 km/h. On foot at 5 km/h it takes 0.2 hours, or 12 minutes. The table gives the travel time for other distances at four of the calculator's travel modes, without stops.

Distance	Walking, 5 km/h	Cycling, 20 km/h	City driving, 50 km/h	Highway driving, 100 km/h
1 km	12 min	3 min	1.2 min	0.6 min
5 km	1 h	15 min	6 min	3 min
10 km	2 h	30 min	12 min	6 min
15 km	3 h	45 min	18 min	9 min
20 km	4 h	1 h	24 min	12 min
25 km	5 h	1 h 15 min	30 min	15 min
30 km	6 h	1 h 30 min	36 min	18 min
45 km	9 h	2 h 15 min	54 min	27 min
50 km	10 h	2 h 30 min	1 h	30 min
60 km	12 h	3 h	1 h 12 min	36 min
80 km	16 h	4 h	1 h 36 min	48 min
100 km	20 h	5 h	2 h	1 h
120 km	24 h	6 h	2 h 24 min	1 h 12 min
150 km	30 h	7 h 30 min	3 h	1 h 30 min
200 km	40 h	10 h	4 h	2 h
250 km	50 h	12 h 30 min	5 h	2 h 30 min
300 km	60 h	15 h	6 h	3 h
400 km	80 h	20 h	8 h	4 h
500 km	100 h	25 h	10 h	5 h

Limits of This Estimate

• The result assumes one constant average speed and no stops. Traffic, terrain, speed limits, fuel stops and rest breaks all change a real trip, so stops have to be added separately.
• The travel-mode speeds are round typical figures, not recommended or legal speeds. Walking at 5 km/h and cycling at 20 km/h sit just above the lower limits public health guidance gives for brisk walking and vigorous cycling, about 4 km/h and 16 km/h [2]. These estimates are based on the best available data and estimations.
• The distance has to be the route actually traveled. A straight-line distance between two places is shorter than the road or rail distance.

Sources