Speed, Distance & Time Calculator

Solve for speed, distance or time. Enter any two and get the third.

Rates basis: Estimate

What do you want to find?

Solving for time

3h 53m

3.89 hours total

Speed: 90 km/h
Distance: 350 km
Time: 3.89 h

Uses average speed and decimal hours: 1.5 hours means 1 hour 30 minutes. Stops, traffic and route conditions are not included.

Example scenarios

350 km at 90 km/h
Time = distance ÷ speed.
3h 53m
240 km in 3 hours
Speed = distance ÷ time.
80 km/h average

Understanding the numbers

How the figures above are worked out — the rules, rates and reasoning behind every line.

Estimates only. Results are for planning purposes and may differ from official figures. Confirm against the relevant authority before making financial decisions.

The d = s × t relationship

Speed, distance and time are linked by one formula. Pick what you want to find, fill in the other two, and the calculator does the rest.

How it's calculated

Distance = speed × time. Rearranged: speed = distance ÷ time, and time = distance ÷ speed.

Enter time as decimal hours: 1.5 means 1 hour 30 minutes. Results use average speed and do not account for stops or changing road conditions.

Frequently asked questions

How do I calculate travel time?

Divide the distance by your average speed. 240 km at 80 km/h takes 240 ÷ 80 = 3 hours.

Formula governance

Formula version: Standard formula
Effective date: Not rate-dependent
Government source: d = s × t
Last updated: 24 Jul 2026