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Kilojoules per Liter to BTUs per US Gallon Converter

Enter the fuel efficiency in kilojoules per liter below to convert it to btus per us gallon.

Convert Kilojoules per Liter to BTUs per US Gallon

Enter a value in kilojoules per liter (kJ/L) to convert to btus per us gallon (BTU/gal).

Result
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17.939389834btus per us gallon
5 kJ/L = 17.939389834 BTU/gal
Result updates automatically
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Reference:NIST OWM (SI Units — Length)
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Kilojoule per Liter to BTU per US Gallon Conversion Table

Table showing various kilojoule per liter measurements converted to btus per us gallon. Click any preset value or arrow to load it into the converter.

How to Convert Kilojoules per Liter to BTUs per US Gallon

To convert kilojoules per liter to btus per us gallon, multiply the fuel efficiency by the following conversion ratio: 3.587878 btus per us gallon/kilojoule per liter.

Since one kilojoule per liter is equal to 3.587878 btus per us gallon, you can use this simple formula to convert:

btus per us gallon = kilojoules per liter × 3.587878

The fuel efficiency in btus per us gallon is equal to the fuel efficiency in kilojoules per liter multiplied by 3.587878.

For example, here's how to convert 5 kilojoules per liter to btus per us gallon using the formula above.

btus per us gallon = (5 kJ/L × 3.587878) = 17.9393898 BTU/gal

How Many BTUs per US Gallon Are in a Kilojoule per Liter?

There are 3.587878 btus per us gallon in a kilojoule per liter, which is why we use this value in the formula above.

1 kJ/L = 3.587878 BTU/gal|1 BTU/gal = 0.2787163 kJ/L

Our kilojoule per liter to btu per us gallon calculator automatically converts your fuel efficiency measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Kilojoules per Liter and btus per us gallon are both units used to measure fuel efficiency. Keep reading to learn more about each unit.

What Is a Kilojoule per Liter?

A kilojoule per liter is a unit of fuel efficiency equal to 1,000,000 joules per cubic meter (J/m³), the base unit for fuel efficiency. Equal to 1 MJ/m³ (1,000,000 J/m³). [1]

The kilojoule per liter is classified as a metric and SI-compatible unit of fuel efficiency. Kilojoules per Liter can be abbreviated as kJ/L; for example, 1 kilojoule per liter can be written as 1 kJ/L.

In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilojoule per liter (kJ/L) a convenient decimal multiple of the joule per cubic meter (J/m³).

In practice, kilojoules per liter (kJ/L) are widely used across large-scale industrial, bulk, and macro-level fuel efficiency specifications within SI metric workflows, engineering documentation, and technical data sheets.

What Is a BTU per US Gallon?

A btu per us gallon is a unit of fuel efficiency equal to 278,716.28 joules per cubic meter (J/m³), the base unit for fuel efficiency. US liquid fuel energy content unit. [2]

The btu per us gallon is classified as a US customary unit of fuel efficiency. BTUs per US Gallon can be abbreviated as BTU/gal; for example, 1 btu per us gallon can be written as 1 BTU/gal.

When working with btus per us gallon (BTU/gal) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, btus per us gallon (BTU/gal) are widely used across large-scale industrial, bulk, and macro-level fuel efficiency specifications within US customary workflows, engineering documentation, and technical data sheets.

When converting fuel efficiency between kilojoules per liter (kJ/L) and btus per us gallon (BTU/gal), keep full floating-point precision (1 kJ/L = 3.587878 BTU/gal; 1 BTU/gal = 0.2787163 kJ/L) during intermediate calculations and round only the final btu per us gallon figure to match your instrument tolerance.

More Kilojoule per Liter & BTU per US Gallon Conversions

Need to calculate in the opposite direction? Use our btus per us gallon to kilojoules per liter calculator to switch your starting unit immediately. You can also explore related tools such as converting btus per us gallon to kilojoules per liter, converting kilojoules per liter to joules per cubic meter, or converting joules per cubic meter to megajoules per cubic meter.

Frequently Asked Questions

There are 3.58788 btus per us gallon (BTU/gal) in 1 kilojoule per liter (kJ/L). Conversely, 1 btu per us gallon (BTU/gal) is equal to 0.27872 kilojoules per liter (kJ/L).

References

NIST · BIPM · ISO
  1. [1]
    NIST OWM (SI Units — Length)·Fuel Efficiency - Volume Metrology Standard — Kilojoules per Liter (kJ/L) to BTUs per US Gallon (BTU/gal)
    NIST OWM Standard
  2. [2]
    BIPM (SI Base Unit: Metre (m))·Unit Specifications: Kilojoule per Liter (kJ/L) & BTU per US Gallon (BTU/gal)
    BIPM Specification
  3. [3]
    NIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (kJ/L to BTU/gal)
    NIST HB 133 Reference
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