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    Gallon (US)/100mi to Kilometer/Gallon (UK) Converter

    Convert Gallon (US)/100mi (gal/100mi) to Kilometer/Gallon (UK) (km/gal (UK)) instantly. Formula: km/gal (UK) = gal/100mi × 1,069.3071074505.

    Fuel Economy Converter

    11 units available

    Decimals:
    1,069.307107

    1 gal/100mi = 1,069.307107 km/gal (UK)

    Formula:

    km/gal (UK) = gal/100mi × 1,069.3071074505

    With your value: 1 gal/100mi = 1,069.30710745 km/gal (UK)

    Other Gallon (US)/100mi to Kilometer/Gallon (UK) conversions

    2 gal/100mi to km/gal (UK)3 gal/100mi to km/gal (UK)4 gal/100mi to km/gal (UK)5 gal/100mi to km/gal (UK)6 gal/100mi to km/gal (UK)7 gal/100mi to km/gal (UK)8 gal/100mi to km/gal (UK)

    Gallon (US)/100mi to Kilometer/Gallon (UK) Conversion Table

    Gallon (US)/100mi (gal/100mi)Kilometer/Gallon (UK) (km/gal (UK))
    0.52,138.614215
    11,069.307107
    2534.653554
    5213.861421
    10106.930711
    1571.28714
    2053.465355
    2542.772284
    5021.386142
    10010.693071
    2504.277228
    5002.138614
    10001.069307

    Kilometer/Gallon (UK) to Gallon (US)/100mi Conversion Table

    Kilometer/Gallon (UK) (km/gal (UK))Gallon (US)/100mi (gal/100mi)
    0.52,138.614215
    11,069.307107
    2534.653554
    5213.861421
    10106.930711
    1571.28714
    2053.465355
    2542.772284
    5021.386142
    10010.693071
    2504.277228
    5002.138614
    10001.069307

    Where these values come from

    Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

    Gallon (US)/100mi (gal/100mi)

    Fuel Economy

    Exact conversion

    Composite of a defined volume and a defined length. US and imperial gallons differ, so mpg figures are not interchangeable between them.

    Source: NIST Special Publication 811, Guide for the Use of the International System of Units

    National Institute of Standards and Technology (US) · Reviewed 2026-07-01

    Kilometer/Gallon (UK) (km/gal (UK))

    Fuel Economy

    Exact conversion

    Composite of a defined volume and a defined length. US and imperial gallons differ, so mpg figures are not interchangeable between them.

    Source: NIST Special Publication 811, Guide for the Use of the International System of Units

    National Institute of Standards and Technology (US) · Reviewed 2026-07-01

    How to Convert Gallon (US)/100mi to Kilometer/Gallon (UK)

    This conversion uses an offset formula, so it cannot be described by a single multiplication factor.

    Formula: km/gal (UK) = gal/100mi × 1,069.3071074505

    Reverse: gal/100mi = km/gal (UK) × 1,069.3071074505

    Step-by-Step Example

    1. Start with your value in Gallon (US)/100mi. For example: 5 gal/100mi
    2. Apply km/gal (UK) = gal/100mi × 1,069.3071074505
    3. The result is: 213.861421 km/gal (UK)

    About Gallon (US)/100mi

    The gallon (us)/100mi (gal/100mi) is a unit of fuel economy. The gallon (us)/100mi scale is offset from the kilometre per litre scale, so converting it requires both a factor and an offset rather than a single multiplier. UnitConvertLab converts it against every other fuel economy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

    Common uses: fuel economy calculations, engineering and science, education.

    About Kilometer/Gallon (UK)

    The kilometer/gallon (uk) (km/gal (UK)) is a unit of fuel economy. One kilometer/gallon (uk) equals 0.219969157 kilometre per litres. UnitConvertLab converts it against every other fuel economy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

    Common uses: fuel economy calculations, engineering and science, education.

    Frequently Asked Questions

    How many Kilometer/Gallon (UK) are in 1 Gallon (US)/100mi?

    There are exactly 1,069.3071074505 Kilometer/Gallon (UK) in 1 Gallon (US)/100mi.

    What is the formula to convert Gallon (US)/100mi to Kilometer/Gallon (UK)?

    The formula to convert Gallon (US)/100mi to Kilometer/Gallon (UK) is: km/gal (UK) = gal/100mi × 1,069.3071074505. For example, to convert 10 Gallon (US)/100mi to Kilometer/Gallon (UK), you would apply the formula to 10.

    What is a Gallon (US)/100mi?

    The gallon (us)/100mi (gal/100mi) is a unit of fuel economy. The gallon (us)/100mi scale is offset from the kilometre per litre scale, so converting it requires both a factor and an offset rather than a single multiplier. UnitConvertLab converts it against every other fuel economy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

    What is a Kilometer/Gallon (UK)?

    The kilometer/gallon (uk) (km/gal (UK)) is a unit of fuel economy. One kilometer/gallon (uk) equals 0.219969157 kilometre per litres. UnitConvertLab converts it against every other fuel economy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

    What are the common uses of Gallon (US)/100mi?

    The Gallon (US)/100mi is commonly used in fuel economy calculations, engineering and science, education.

    Related Fuel Economy Conversions

    Kilometer/Liter → Kilometer/Gallon (UK)Liter/100km → Kilometer/Gallon (UK)Miles/Gallon (US) → Kilometer/Gallon (UK)Miles/Gallon (UK) → Kilometer/Gallon (UK)Mile/Liter → Kilometer/Gallon (UK)Gallon (US)/100mi → Kilometer/LiterGallon (US)/100mi → Liter/100kmGallon (US)/100mi → Miles/Gallon (US)Gallon (US)/100mi → Miles/Gallon (UK)

    Cite this page

    UnitConvertLab. (2026). Gallon (US)/100mi to Kilometer/Gallon (UK) converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gallon_per_100mi_us-to-km_per_gallon_uk