Travel time calculator
Estimate driving time from distance and average speed. This is not live traffic.
What the result means
Time = distance ÷ speed. Average speed is lower than the speed limit once you include towns, lights and stops.
How it is calculated
Hours = km ÷ km/h
- Average speed: What you actually expect to average, not the posted limit.
Minutes are the fractional hour converted × 60.
Assumptions
- Estimates only — not tax, legal, credit or financial advice. Check the official source or your contract before relying on a figure.
- Constant speed, no breaks.
Worked example
180 km at 90 km/h
A highway leg.
- Time
- 180 ÷ 90 = 2 hours
If you only average 75 km/h, the same leg is 2 hours 24 minutes.
Not a maps ETA
Live traffic, roadworks and rest breaks are omitted. Pair with the fuel calculator for litres and cost on the same distance.
On Australian highways a realistic average is often 10–20 km/h below the posted limit once towns, roadworks and fuel stops are in. Fatigue guidance is a safety matter: add rest breaks on top of this number rather than pretending the arithmetic includes them.
Questions
Can I enter miles?
Convert with the length calculator first. This page is kilometres and km/h.
Does this include rest stops?
No. It is distance divided by average speed. Add meal and fatigue breaks separately, especially on a drive longer than two hours.
Read the background
A guide explains the rules behind this calculation in full, without any inputs to fill in.
Related calculators
- FuelEstimate litres used and trip cost from distance, L/100 km consumption and the price at the pump, including an optional return trip.
- Fuel economyConvert L/100 km to km/L and back — the two ways of writing the same consumption.
- LengthConvert millimetres, centimetres, metres, kilometres, inches, feet, yards and miles.
Sources
National Measurement Institute
Last reviewed 2026-08-19
Travel · Last reviewed 19 August 2026
Estimates only. Not tax, legal or financial advice. Check official sources before relying on a figure.
Spotted a mistake? Contact us.
Printed from OzCalc (ozcalc.com). Last reviewed 19 August 2026. Estimates only — not tax, legal or financial advice.