# Drive Time Calculator

URL: https://speedycalculator.com/calculators/everyday-life/drive-time/
Last updated: 2026-10-25

> The drive time calculator works out how long a road trip takes from the distance, average speed and breaks, your arrival time, and the fuel cost per car and per passenger.

## Inputs

- Distance (mi, km, m, nmi)
- Average speed (mph, km/h, m/s, knots)
- Total breaks (min)
- Departure time
- Fuel economy given as
- Fuel economy (mpg (US), mpg (UK), km/L)
- Fuel consumption (L/100 km)
- Fuel price (/US gal, /L, /UK gal)
- People sharing the cost

## Results

- Driving time
- Total trip time
- Arrival time
- Arrives (days later)
- Fuel used
- Fuel cost
- Fuel cost per person

## Formula

```
Driving time = distance ÷ average speed
Total time = driving time + breaks
Arrival = departure + total time
Fuel cost = distance ÷ fuel economy × price
```

## Explanation

Average speed over a long trip is lower than the speed limit because of traffic, towns and junctions – 50–60 mph is realistic for motorways with some traffic. Safety organisations recommend a 15-minute break at least every two hours of driving.

### How to use the Drive Time Calculator

- **Distance**
- **Average speed**
- **Total breaks**
- **Departure time**
- **Fuel economy given as**
- **Fuel economy**
- **Fuel consumption**
- **Fuel price**
- **People sharing the cost**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Enter the distance, your realistic average speed, the total time of breaks and the departure time, plus fuel economy, fuel price and the number of people sharing.

### Tips

- Use your own measured figures – fuel economy, speed and prices vary a lot with driving style, traffic, load and season.
- Pick the unit in each field's menu (miles or kilometres, mpg or L/100 km); the calculator converts everything for you.
- Fill up to the brim twice and divide the distance by the fuel added to measure real fuel economy.
- For vehicle modifications, treat results as a starting point and confirm with the parts maker or a professional mechanic.

### Common mistakes to avoid

- Mixing US and imperial (UK) gallons – a UK gallon is about 20% bigger.
- Using the advertised fuel economy instead of real-world figures.
- Forgetting tolls, parking and wear and tear when comparing driving with public transport.

### Inputs explained

FieldWhat to enterDistanceUnits: mi, km, m, nmiAverage speedUnits: mph, km/h, m/s, knotsTotal breaksIn minDeparture timeA clock time (hours and minutes)Fuel economy given asChoose one: Distance per volume (mpg, km/L), Litres per 100 kmFuel economyUnits: mpg (US), mpg (UK), km/LFuel consumptionIn L/100 kmFuel priceUnits: /US gal, /L, /UK galPeople sharing the costA number

### What each result means

- **Driving time** = [Distance]÷[Average speed]÷3600
- **Total trip time** = [Distance]÷[Average speed]÷3600 + [Total breaks]÷60
- **Arrival time** = [Departure time] + [Total trip time]
- **Arrives (days later)** = floor(([Departure time] + [Total trip time])÷24)
- **Fuel cost** = [Fuel used]×[Fuel price]
- **Fuel cost per person** = [Fuel cost]÷[People sharing the cost]

## Worked example

Inputs — Distance: 300 mi; Average speed: 55 mph; Total breaks: 45 min; Departure time: 08:00; Fuel economy given as: Distance per volume (mpg, km/L); Fuel economy: 25 mpg (US); Fuel consumption: 8 L/100 km; Fuel price: $3.5 /US gal; People sharing the cost: 2.

Results — Driving time = 5 h 27 min; **Total trip time = 6 h 12 min**; Arrival time = 2:12 PM; Arrives (days later) = 0; Fuel used = 12 US gal; Fuel cost = $42.00; Fuel cost per person = $21.00.

## FAQ

**How long does it take to drive 300 miles?**
At an average of 55 mph, about 5 h 27 min of driving, plus breaks.

**How often should I take a break?**
At least 15 minutes every two hours, and stop sooner if you feel tired.

**Does the calculator include time zones?**
No – if you cross a time zone, adjust the arrival time by the difference.

**What formula does the Drive Time Calculator use?**
Driving time = distance ÷ average speed.