Example 1
Leaving before seven, the 18.0 km run to the office takes just 22 minutes: empty junctions and green lights all the way.
Average speed calculator
Enter the whole distance and the whole time. You get the average, stops included. 18 km in 22 minutes (0.367 h) is 49.0 km/h. The same eighteen in a 48 minute jam falls to 22.5 km/h.
Result
Distance and Time (h). Average speed shows up here.
How it works
v = s/t divides the whole distance by the whole time. A speedometer says “70 right now.” The average pulls in lights, a 50 zone, and a bakery stop. That is why city trips often land at 25 to 40 km/h even when an empty stretch felt like a highway.
Card example: 18 km to the office in 22 minutes. 22/60 = 0.367 h, v = 18/0.367 ≈ 49.0 km/h. The same route at 8 a.m., 48 minutes: 0.8 h, v = 22.5 km/h. Distance did not change. The denominator grew.
Type time in hours, not as 1:20. A quarter hour is 0.25, 1 h 20 min is 1.333, 80 minutes is 80/60. A 130 km freeway in 1 h 25 min (1.42 h) is 91.5 km/h. A 420 km holiday drive in 5 h, fuel stop included, is 84 km/h.
A 5 km parkrun in 28 minutes: 0.467 h, v ≈ 10.7 km/h. A dog walk of 3.2 km in 48 minutes: 4.0 km/h. A regional train 86 km in 1 h 12 min: 71.7 km/h. One unit pair for the whole sum: kilometers with km/h, or miles with mph.
A there-and-back trip is one sum of distances, one sum of times, then one division. Averaging two averages by a rough estimate lies when the return sat in traffic. GPS can run a few percent longer than the odometer. Pick one source and keep it week to week.
When you want distance from known v and t, open s = v·t. When one of three is missing at constant speed, use the v / s / t card. Here you stay with dividing all of s by all of t.
Article with a problem: uniform motion. Distance from v and t: s = v·t. Missing one of three: v / s / t calculator. Energy: ½mv².
How to use
- Type distance in the labeled unit, for example 18 km to the office.
- Type time in hours: 22 minutes is 0.367, 48 minutes is 0.8, 1 h 25 min is 1.42.
- Click Calculate. 18 km and 0.367 h give 49.0 km/h. 18 km and 0.8 h give 22.5 km/h.
- Include stops when the question is door to door. Subtract them when you want driving pace alone.
- Distance from v and t is on the neighbouring page as s = v·t. Here the unknown is v.
Formula
v = s ÷ t
Letters in v = s/t
The average eats stops: v = s/t. 18 km in 22 minutes (0.367 h) is 49.0 km/h; the same eighteen in 48 minutes falls to 22.5 km/h.
- v
- Average speed, not the speedometer needle. 18/0.367 ≈ 49.0 km/h to the office; in a jam 0.8 h yields 22.5 km/h.
- s
- The whole distance. 18 km stays 18 km; time changes, so the average changes, not the trip length.
- t
- Whole time in hours. 22 minutes is 0.367 h; 48 minutes is 0.8 h. The field does not want seconds.
Real-life examples
Example 2
The same 18.0 km route at eight o'clock: 48 minutes bumper to bumper. The distance did not change; the average sure did.
Example 3
A relaxed 130 km stretch of motorway on cruise control, done in 1 h 25 min without a single stop.
Example 4
Sunday road-bike loop: 42.0 km in 2 h 10 min, the mid-ride espresso stop very much included.
Example 5
Evening lap with the dog: 3.20 km in 48 minutes, with mandatory sniff breaks at every lamppost.
Example 6
Saturday parkrun: 5.00 km in 28 minutes, holding a steady pace from the start line to the finish funnel.
Example 7
The regional train covers 86.0 km in 1 h 12 min: stops included, and for once not a minute late.
Example 8
Holiday run to the coast: 420 km in 5 hours, fuel stop and sandwich break counted in.
Example 9
The suburban bus carries you 11.0 km in 34 minutes, collecting passengers at every single stop.
Example 10
Driving home after midnight: 95.0 km of empty road in 1 h 5 min, no red lights and no queues.
Example 11
Tram straight through downtown: 6.50 km in 28 minutes, pausing at every stop and traffic signal.
Example 12
Saturday morning, 62.0 km out to the cabin in 55 minutes: the city is still asleep, so it just flows.
Frequently asked questions
How much v for 18 km in 22 minutes?
22 min = 0.367 h, v ≈ 49.0 km/h. The same trip in 48 min (0.8 h) is 22.5 km/h.
How do I type 1 h 20 min?
20/60 ≈ 0.333, so 1.333 h. Or 80/60. The calculator needs hours, not 1:20.
Do I count fuel and coffee?
Yes when you ask about the whole door-to-door trip. No when you compare freeway pace alone: subtract the stop first.
Why is the average lower than “I was doing ninety”?
Fifties, lights, and stops sit in the denominator. Time grows, distance sits still, the average falls.
How do I handle there and back?
Add the distances, add the times, then divide once. Two averages blended by a rough estimate lie when the return was in a jam.
What is 130 km in 1 h 25 min?
1.42 h, so v ≈ 91.5 km/h. 420 km in 5 h is 84 km/h on the same quotient.
Will this give fuel use?
No. Average speed is pace. Liters depend on mass, drag, and the right foot. Here it stays v = s/t.
GPS and the odometer disagree. Which one?
GPS can run long from zigzags. The odometer depends on the tire. Pick one source and keep it for comparisons.
What result makes sense in a city?
Above 45 km/h average in dense city traffic is rare. 160 km/h average after a downtown commute usually means time was not in hours.
Where do I compute distance if I know v and t?
On the s = v·t page. The calculator divides. There you multiply.
Knowledge sources
The formula is the school one. Units follow SI; NIST SP 330 and BIPM define the measures, not your result.
Page updated in 2026.