Gas Mileage Calculator

Calculate fuel costs and MPG for any trip. Compare gas costs across different fuel prices. See annual fuel cost projections and compare to electric vehicle operating costs with 5-year savings estimates.

Vehicle Type Presets

Trip Distance (miles)

Fuel Price ($/gallon)

Vehicle MPG

Annual Miles Driven

Trip Fuel Cost

$58.33

16.7 gallons needed for 500 miles

Effective MPG

30.0

Cost per Mile

$0.117

Miles per $1

8.6

Annual Fuel Cost Estimate

Based on 12,000 miles per year

Your Annual Fuel Cost

$1,400.00

400 gallons/year

Monthly Fuel Budget

$116.67

33.3 gallons/month

Gas vs Electric Vehicle Comparison

Your Vehicle (Gas)

30 MPG

$1,400.00/yr

Electric Vehicle

~$0.04/mile avg

$480.00/yr

Potential Annual Savings with EV

$920.00

$4,600.00 over 5 years

Trip Cost at Different Fuel Prices

Price/Gal	Trip Cost	Cost/Mile	Annual Cost
$2.50	$41.67	$0.083	$1,000.00
$3.00	$50.00	$0.100	$1,200.00
$3.50 *	$58.33	$0.117	$1,400.00
$4.00	$66.67	$0.133	$1,600.00
$4.50	$75.00	$0.150	$1,800.00
$5.00	$83.33	$0.167	$2,000.00
$5.50	$91.67	$0.183	$2,200.00

* Your current fuel price

Fuel Saving Tips

--Maintain proper tire pressure to improve MPG by up to 3%.
--Remove excess cargo weight; every 100 lbs reduces MPG by ~1%.
--Use cruise control on highways to maintain steady speed.
--Avoid aggressive acceleration and braking to save 15-30% on fuel.
--Keep up with regular engine maintenance and oil changes.

How to Use Gas Mileage Calculator

1Enter trip distance
2Set fuel price and vehicle MPG
3View trip fuel cost
4Compare annual costs with EV

Frequently Asked Questions

How do I calculate my MPG?▾

Fill your tank completely, note the odometer reading. Drive normally until you need fuel again. Fill up and note gallons used and new odometer reading. MPG = (ending odometer - starting odometer) / gallons used.

What is good gas mileage?▾

Compact cars: 30-40 MPG. Sedans: 25-35 MPG. SUVs: 20-28 MPG. Trucks: 15-22 MPG. Hybrids: 40-55 MPG. Any vehicle getting over 30 MPG combined is considered good. Over 40 MPG is excellent.

How much can I save with an EV?▾

EVs cost about $0.03-0.05 per mile for electricity vs $0.10-0.20 per mile for gas. Driving 15,000 miles/year, you save $750-2,250 annually on fuel alone. Over 5 years, that is $3,750-11,250 in fuel savings.

About Gas Mileage Calculator

NexTool's Gas Mileage Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.