Travel Time Calculator — from distance and speed

How it works

This is the average-speed relation solved for time. Average speed is the distance divided by the time (v = d ÷ t), so rearranging for the time gives:

t = d ÷ v

Cover a distance d at a steady speed v and the trip takes d ÷ v. It is unit-agnostic: enter the distance and speed in matching units and the time comes out in the speed's time unit. Miles with miles per hour gives hours; kilometres with km/h gives hours; metres with metres per second gives seconds.

The result assumes a constant average speed. Real journeys slow for traffic, stops and junctions, so use a realistic average rather than a top speed for a sensible estimate.

Worked example

Driving 150 miles at 60 mph takes 150 ÷ 60 = 2.5 hours. A 195-mile highway trip at 65 mph takes 3 hours, a 1.5-mile walk at 3 mph takes 0.5 hours (30 minutes), and a 2000-mile flight at 500 mph takes 4 hours. Halve your speed and the trip takes twice as long.

Frequently asked questions

What is the formula for travel time?

Travel time equals distance divided by speed: t = d ÷ v. It is the average-speed relation (speed = distance ÷ time) rearranged to solve for time, so a known distance at a steady speed gives how long the trip takes.

How do I convert the answer to hours and minutes?

The result is in decimal hours when you use miles and mph. To convert the fractional part to minutes, multiply it by 60 — for example 2.5 hours is 2 hours and 0.5 × 60 = 30 minutes, so 2 hours 30 minutes.

What units should I use?

Match the distance to the speed's distance unit. Miles with mph gives hours; kilometres with km/h gives hours; metres with m/s gives seconds. The calculator is unit-agnostic, so just keep the distance and speed in the same system.

How is this different from the speed and distance calculators?

All three use d = v × t but solve for different unknowns. This one finds time from distance and speed; the [speed](speed-calculator) calculator finds speed from distance and time; the [distance](distance-time-calculator) calculator finds distance from speed and time.

Why should I use average speed, not top speed?

Because journeys are rarely at a constant top speed — you slow for traffic, lights and turns. Using your realistic average speed gives an accurate travel time; using a top speed underestimates it, sometimes badly on stop-and-go routes.

How long does a 300-mile trip take at 70 mph?

Divide: 300 ÷ 70 ≈ 4.29 hours, which is about 4 hours 17 minutes (0.29 × 60 ≈ 17 minutes). Enter your own distance and speed above for an exact figure.