Drive Time Calculator

Estimate road trip time including rest breaks.

Distance

Average speed

mph

Break every(optional)

Default every 2 hr

Break length(optional)

min

Default 15 min

Results update as you type.

Total trip time

—

Driving time—

Total trip time—

How it works

A road trip takes longer than distance divided by speed because you stop to rest, refuel, and eat, and this calculator gives a realistic total. You enter the distance, your average speed, how often you take a break, and how long each break lasts, and it returns the driving time, the total trip time including breaks, and the total in minutes. The driving portion is distance divided by average speed, but the average speed should be realistic — highway cruising might average 60 to 65 mph once you account for slowing through towns, traffic, and speed changes, often less than the speed limit over a long trip. The calculator then adds rest breaks: it estimates how many breaks you will take based on your interval and adds their time. Regular breaks are not just convenient but important for safety, since driver fatigue is a major cause of accidents — experts recommend a break roughly every two hours on long drives. For multi-day trips, you would also factor in overnight stops. This estimate helps you plan departure and arrival times, meeting points, and how far you can realistically go in a day. Building in breaks gives a far more accurate arrival estimate than raw driving time alone. Enter your distance, speed, and break schedule to estimate the total trip time.

Formula

Total = driving time + (number of breaks × break length)

Driving time is the distance divided by average speed. The number of rest breaks is the driving time divided by how often you stop, rounded down. Adding the total break time to the driving time gives a realistic road-trip duration, since long drives require stops.

Source:Speed-distance-time with rest stops

We review all our tools from time to time to ensure accuracy.

Worked example

Distance:300Average speed:60Break every:2Break length:15

300 ÷ 60 = 5 hr driving + 2 breaks × 15 min = 5.5 hours total.

How to use this calculator

1
Enter your values
Enter distance and average speed.
2
Adjust the options
Adjust break every and break length if they apply — sensible defaults are already set.
3
Read your result
Total trip time updates instantly as you type — no button to press.

Frequently asked questions

How do you calculate drive time?

Divide the distance by your average speed for driving time, then add rest breaks. For 300 miles at 60 mph you drive 5 hours, and with two 15-minute breaks the total is 5.5 hours. Including breaks and using a realistic average speed gives a far more accurate arrival estimate than distance over the speed limit alone.

What average speed should I use?

Use a realistic average, not the speed limit. Over a long drive, slowing for towns, traffic, construction, and interchanges brings the effective average below the posted limit — often around 60 to 65 mph for highway travel. Using the speed limit overestimates how fast you will actually cover the distance, so a slightly lower average gives better estimates.

How often should I take breaks on a road trip?

Safety experts recommend taking a break roughly every two hours or 100 miles on long drives to combat fatigue, stretch, and stay alert. Drowsy driving is a serious accident risk. This calculator lets you set your break interval and length so the total trip time reflects the stops you plan, giving a realistic and safer schedule.

Does this include overnight stops?

No, this calculator estimates a single stretch of driving with short rest breaks. For multi-day road trips, divide the total driving time into daily segments and add overnight stops separately. A common guideline is to limit driving to about 8 to 10 hours per day for safety, so plan overnight stays for longer journeys accordingly.

Why is my actual trip longer than expected?

Real trips run long because of traffic, road construction, slower speeds through towns, longer or more frequent stops, weather, and detours. Raw distance divided by the speed limit ignores all of this. Using a realistic average speed and building in adequate breaks, as this calculator does, produces a more dependable estimate, though always allow some extra buffer.