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Fuel Efficiency Calculator

Calculate fuel efficiency, convert between MPG and L/100km, and estimate fuel costs for trips

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About This Tool

Fuel Efficiency Calculator computes your vehicle's fuel efficiency from distance and fuel used, displaying results in L/100km, MPG, and km/L. It also estimates trip cost when you provide a fuel price, rates your efficiency level, and compares it against eight common vehicle types.

Key Features

Quick Preview

Use Cases

fuel efficiency mpg

Frequently Asked Questions

What efficiency units does the calculator output?

The calculator outputs L/100km, MPG (US), and km/L simultaneously. If you enter a fuel price, it also shows the estimated trip cost.

How is the efficiency rating determined?

The tool rates your fuel efficiency as Excellent (≤5 L/100km), Good (≤8), Average (≤11), Below Average (≤14), or Poor (>14) based on the L/100km result.

Can I calculate trip cost as well?

Yes, enter the fuel price per unit along with distance and fuel used, and the calculator will show the total trip cost in your selected currency.

What currencies are supported?

You can choose from $ (USD), ¥ (CNY), € (EUR), and £ (GBP). The currency applies to the per-unit fuel price you enter.

What is the vehicle efficiency comparison table?

The table lists eight vehicle types — Compact, Sedan, SUV, Pickup, Hybrid, Electric, Sports Car, and Minivan — with their typical L/100km, MPG, and km/L values for easy comparison.