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    18 Gallons to Quarts

    "Gallons to Quarts" Calculator
    Convert
    gal to Quarts

    How many quarts is 18 gallons?

    Answer

    18 gal = 72 qt

    US liquid units: 1 US gallon = 4 US quarts. UK (imperial) gallons and quarts keep the same 4 : 1 ratio, but each is about 20 % larger.

    galqt0102005010018 gal72 qt

    18 gal × 4 = 72 qt

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    18 Gallons to Quarts - 18 gal = 72 quarts. Convert 18 gallons to quarts. 18 US gallons = 72 US quarts. Gallons to quarts conversion (1 gal = 4 qt) with formula.
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    FAQ

    How many quarts is 18 gallons?

    18 gal = 72 qt

    What is the formula to convert 18 gallons to quarts?

    Multiply the gallon value by 4: 18 gal × 4 = 72 quarts. The ratio is exact by definition — the US liquid gallon is 231 cubic inches and a quart is a quarter of it.

    How do I convert 72 quarts back to gallons?

    Divide the quart count by 4: 72 qt ÷ 4 = 18 gallons. The sign is ≈ only because the quart figure on this page is rounded to two decimals.

    Is a US quart the same as an imperial quart?

    No. A US liquid quart holds 0.946352946 L and an imperial quart 1.1365225 L, roughly 20% more. Both systems split their gallon into four, so the ×4 step is identical, but 72 qt on this page works out to about 68.14 L, not about 81.83 L.