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    Convert Teaspoon (Metric) to US gallons

    Western Europe · Cooking Measures · active · modern

    Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.

    Quick answer

    1 Teaspoon (Metric) = 0.00132086 US gallons

    1 Teaspoon (Metric) = 0.00132086 US gallons. Teaspoon (Metric) is a traditional volume unit from Western Europe.

    Convert any amount

    Teaspoon (Metric) =0.00132086 US gallons

    Teaspoon (Metric) to US gallons table

    Teaspoon (Metric)US gallons
    0.25 Teaspoon (Metric)0.000330215 US gallons
    0.5 Teaspoon (Metric)0.00066043 US gallons
    1 Teaspoon (Metric)0.00132086 US gallons
    2 Teaspoon (Metric)0.00264172 US gallons
    3 Teaspoon (Metric)0.00396258 US gallons
    4 Teaspoon (Metric)0.00528344 US gallons
    5 Teaspoon (Metric)0.0066043 US gallons
    10 Teaspoon (Metric)0.0132086 US gallons
    20 Teaspoon (Metric)0.0264172 US gallons
    25 Teaspoon (Metric)0.0330215 US gallons
    50 Teaspoon (Metric)0.066043 US gallons
    100 Teaspoon (Metric)0.132086 US gallons

    About the Teaspoon (Metric)

    Metric teaspoon = 5ml exactly.

    Symbol
    tsp m
    Value in SI
    1 Teaspoon (Metric) = 0.005 litre
    Typical use
    cooking
    Source
    UnitConvertLab measurement atlas

    Every atlas conversion routes through the SI litre. See our methodology and data provenance pages for how these values are sourced and verified.

    Frequently asked

    How many US gallons are in a Teaspoon (Metric)?

    1 Teaspoon (Metric) = 0.00132086 US gallons. Multiply the number of Teaspoon (Metric) by 0.0013208603 to get US gallons.

    What is Teaspoon (Metric) used for?

    Metric teaspoon = 5ml exactly. It is classified as active and dates from the modern period.

    Is the Teaspoon (Metric) value exact?

    Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI litre, so the arithmetic itself introduces no rounding beyond the digits shown.

    How reliable is this Teaspoon (Metric) conversion?

    Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.

    Cite this page

    UnitConvertLab. (2026). Convert Teaspoon (Metric) to US gallons. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/tsp-metric-to-us-gallon

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