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Miles per Gallon (US) to Miles per Liter Conversion Calculator: Free Online Tool

Convert miles per US gallon to miles per liter with our free online fuel consumption converter.

Miles per Gallon (US) to Miles per Liter Calculator

Miles per Gallon (US)
Miles per Liter

How to Use the Calculator:

  1. Enter the value you want to convert in the 'From' field (Miles per Gallon (US)).
  2. The converted value in Miles per Liter will appear automatically in the 'To' field.
  3. Use the dropdown menus to select different units within the Fuel Consumption category.
  4. Click the swap button (⇌) to reverse the conversion direction.

How to Convert Miles per Gallon (US) to Miles per Liter

Converting Miles per Gallon (US) to Miles per Liter involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

1 Miles per Gallon (US) = 0.684202 miles per liter

Example Calculation:

Convert 30 miles per US gallon: 30 × 0.684202 = 20.5261 miles per liter

Disclaimer: For Reference Only

These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.

Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.

What is a Miles per Gallon (US) and a Miles per Liter?

Miles per Gallon (US), often abbreviated as MPG (US) or simply MPG in the US context, is a unit of fuel efficiency used primarily within the United States customary system. It quantifies the distance in miles that a vehicle can travel using one US gallon of fuel. A higher MPG (US) value indicates better fuel efficiency.

Miles per Liter (mi/L) is a hybrid unit of fuel efficiency that measures the distance in miles a vehicle can travel using one liter of fuel. It combines a unit of distance from the Imperial/US customary system (mile) with a unit of volume from the metric system (liter). A higher mi/L value indicates better fuel efficiency.

Note: The Miles per Gallon (US) is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Miles per Liter belongs to the metric (SI) system.

History of the Miles per Gallon (US) and Miles per Liter

MPG based on the US customary gallon (approximately 3.785 liters) became the standard measure for vehicle fuel economy in the United States many decades ago. Its prominence was solidified by government regulations, particularly the Corporate Average Fuel Economy (CAFE) standards established in the 1970s and enforced by the Environmental Protection Agency (EPA). The EPA mandates MPG testing and reporting for all new vehicles sold in the US.

Miles per Liter is not a standard official unit of fuel economy in any major region. Its use typically arises in specific contexts where there's a need to bridge measurements between systems, or informally. For instance, someone accustomed to thinking in miles (like in the US or UK) might measure fuel consumption in liters (common globally) and calculate efficiency in mi/L. It lacks the widespread regulatory or common usage seen with MPG (US), MPG (UK), L/100km, or km/L.

Common Uses for miles per US gallon and miles per liter

Explore the typical applications for both Miles per Gallon (US) (imperial/US) and Miles per Liter (metric) to understand their common contexts.

Common Uses for miles per US gallon

  • Official Vehicle Ratings: The primary unit used by the EPA for reporting official city, highway, and combined fuel economy figures for new vehicles sold in the US.
  • Window Stickers (Monroney Label): Displayed prominently on the mandatory window stickers of new cars, allowing consumers to compare efficiency at the point of sale.
  • Consumer Comparison: Widely used by American consumers to compare the fuel efficiency and potential running costs of different vehicles.
  • Vehicle Advertising: Frequently highlighted in car advertisements and marketing materials within the US.
  • Informal Benchmarking: The common unit used in everyday conversation about car fuel efficiency in the US.

Common Uses for miles per liter

While uncommon, mi/L might be encountered in:

  • Informal Comparisons: Used by individuals comparing vehicles or fuel usage when dealing with mixed units (e.g., driving distances in miles but purchasing fuel in liters).
  • Specific Technical Analysis: Could appear in engineering or technical reports that specifically require bridging US/Imperial distance measurements with metric fuel volumes.
  • Online Calculators/Converters: Often included as an option in online tools that convert between various fuel efficiency units.

Frequently Asked Questions

Questions About Miles per Gallon (US) (MPG (US))

Is a higher MPG (US) value better?

Yes, a higher MPG (US) value signifies better fuel efficiency. It means the vehicle can cover more miles for each US gallon of fuel consumed.

How is MPG (US) different from MPG (UK)?

The main difference lies in the definition of the gallon. The US customary gallon (approx. 3.785 liters) is smaller than the Imperial gallon (UK, approx. 4.546 liters). Because the UK gallon is larger, a vehicle will travel further on one UK gallon than on one US gallon, resulting in a higher MPG (UK) figure compared to the MPG (US) figure for the same vehicle. Specifically, 1 MPG (UK) ≈ 1.201 MPG (US), or conversely, 1 MPG (US) ≈ 0.833 MPG (UK).

How do I convert MPG (US) to L/100km?

To convert US Miles Per Gallon to Liters per 100 kilometers (a common metric unit where lower is better), use the formula: L/100km ≈ 235.21 / MPG (US).

How do I convert MPG (US) to km/L?

To convert US Miles Per Gallon to Kilometers per Liter (a metric unit where higher is better), use the formula: km/L ≈ MPG (US) * 0.42514.

How do I convert MPG (US) to MPG (UK)?

To convert US Miles Per Gallon to Imperial Miles Per Gallon, use the formula: MPG (UK) ≈ MPG (US) * 1.20095.

About Miles per Liter (mi/L)

Is a higher mi/L value better?

Yes, similar to MPG and km/L, a higher mi/L value signifies better fuel efficiency. It means the vehicle can cover more miles for each liter of fuel consumed.

How do I convert mi/L to km/L?

To convert Miles per Liter to Kilometers per Liter, multiply by the number of kilometers in a mile. km/L ≈ mi/L * 1.60934

How do I convert mi/L to L/100km?

To convert Miles per Liter to Liters per 100 kilometers (where lower is better), use the formula: L/100km ≈ 62.137 / mi/L (This is derived by first converting mi/L to km/L, then using L/100km = 100 / km/L)

How do I convert mi/L to MPG (US)?

To convert Miles per Liter to US Miles Per Gallon, multiply by the number of liters in a US gallon. MPG (US) ≈ mi/L * 3.78541

How do I convert mi/L to MPG (UK)?

To convert Miles per Liter to Imperial Miles Per Gallon (used in the UK), multiply by the number of liters in an Imperial gallon. MPG (UK) ≈ mi/L * 4.54609

Is mi/L the same as MPG?

No. MPG (Miles per Gallon) measures distance per gallon (either the US gallon or the larger UK Imperial gallon), whereas mi/L measures distance per liter. Since a gallon is significantly larger than a liter, MPG values will be much higher than mi/L values for the same vehicle efficiency.

Conversion Table: Miles per Gallon (US) to Miles per Liter

Miles per Gallon (US) (MPG (US))Miles per Liter (mi/L)
10.264
51.321
102.642
256.604
5013.209
10026.417
500132.086
1,000264.172

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