Estimate a monthly fuel or charging budget
Estimate fuel or EV electricity spending using your usual driving, consumption and price.
Example: 40 km a day
ExampleFuel a month
$155.05
$35.81 a week · $1,860.58 a year
- 40 km a day × 5 days
- 200 km a week
- Weeks in a month (52 ÷ 12)
- 4.33
- Distance a month
- 866 km
- Per 100 km
- 100
- Medium car fuel use
- 8.0 L/100km
- Fuel a month
- 69.3 L
- U91 national average
- 223.8 c/L
- Monthly fuel budget
- $155.05
If you pay 5 c/L less:$151.58 a month
Example: 40 km a day. Fuel a month. $155.05. $35.81 a week · $1,860.58 a year
Monthly fuel budget · $35.81 a week · $1,860.58 a year$155.05
DetailsTurn regular driving into a realistic fuel budget
Start with a normal week
Include commuting, school runs, shopping and regular weekend travel rather than one unusually low week.
Use your observed economy
Average several fills where possible so traffic, weather, towing and driving style are represented.
Use a defensible pump price
A recent local price or a conservative average is safer for budgeting than the single cheapest report.
Leave room for variation
Road trips, price-cycle peaks and extra kilometres can push the real month above the estimate.
Fuel map
Check a station price before you go
Open the fuel map for reported prices, update times and directions near you or along your route.
Get the free FuelRadar app
Free on iPhone and Android: price alerts, saved stations, the forecast.
Budget calculator questions
How does this estimate my monthly fuel cost?
It multiplies your daily distance by driving days per week, then by 4.33 (the average number of weeks in a month), applies your vehicle’s L/100km and prices the litres at the rate you enter.
Why 4.33 weeks per month?
52 weeks ÷ 12 months = 4.33. Using this average gives a more accurate monthly figure than assuming exactly 4 weeks.
How can I lower my monthly fuel bill?
Drive smoothly, keep tyres inflated, combine trips and compare nearby station prices on the fuel map before a larger fill.