Auto Tools

Premium vs Regular Gas Calculator

Compare the monthly and yearly cost difference between premium and regular gasoline.

Updated April 12, 2026
Free online tool
Planning and research use

Why this page exists

Fuel-grade decisions are easier to compare when the monthly and yearly cost gap is shown clearly instead of guessed at at the pump. This calculator helps visitors compare the cost of using premium fuel versus regular fuel based on monthly miles, MPG, and current gas prices.

Interactive tool

Run the estimate

Enter your numbers and read the result first, then use the sections below to understand what affects the outcome.

Calculator

Premium vs regular gas calculator

Compare the monthly and yearly fuel-cost difference between premium and regular gasoline.

Result

$21.43

Estimated monthly and yearly cost difference between using premium and regular fuel at the prices entered.

Monthly regular-fuel cost$144.64

Monthly premium-fuel cost$166.07

Monthly difference$21.43

Yearly difference$257.14

1,000 miles per month at 28.0 MPG uses about 35.7 gallons of fuel in this estimate.
At $4.05 for regular and $4.65 for premium, the monthly fuel-cost difference is about $21.43.
Use the result as a cost comparison only, because engine requirements, seasonal pricing, and real-world MPG can all shift the final decision.

This is a simple fuel-cost comparison. Real fuel economy, seasonal price swings, and whether a vehicle truly requires premium fuel can all change the decision.

Planning note

Last updated April 12, 2026. Use this tool to compare scenarios and plan ahead, then confirm important details with the lender, employer, insurer, contractor, or other qualified provider involved in the final decision.

How it works

What the calculator is doing

Enter miles driven per month, vehicle MPG, and both gas prices per gallon.

The calculator estimates monthly fuel use from miles and MPG.

It multiplies that fuel use by each gas price to compare monthly and yearly cost.

Understanding your result

This is a fuel-cost comparison, not an engine recommendation. Real fuel economy and whether a vehicle actually requires premium fuel can change the decision.

Browse more auto tools

Examples

Ways people use this tool

Example scenarios help turn a quick estimate into a more useful comparison or planning step.

Check the monthly cost gap between grades

A fast cost comparison can make pump-price differences easier to evaluate over time.

See the yearly cost impact clearly

Small per-gallon price gaps can add up noticeably over a full year of driving.

Use it with other fuel tools

This comparison can be easier to interpret alongside gas-cost or fuel-savings estimates.

FAQ

Common questions

How does this calculator compare premium and regular gas?

It estimates monthly fuel use from miles driven and MPG, then multiplies that fuel use by the regular and premium prices entered.

Why show yearly difference too?

A monthly price gap can look small on its own, but the yearly difference often makes the long-term cost easier to understand.

Does this mean regular fuel is always better?

No. Some vehicles require premium fuel or perform differently with it, so the cost comparison should be considered alongside the vehicle’s fuel recommendation.

Related tools

Keep comparing

Use these related tools to compare nearby scenarios, check a second estimate, or keep narrowing down the right decision.

Auto ToolsUpdated April 11, 2026