GSCalculate

Volume Converter

Convert volume between liters, milliliters, and common US kitchen units — teaspoons, cups, pints, quarts, gallons, and fluid ounces. Free and instant.

Reviewed / updated August 4, 2026

Your inputs

Result

Converted volume

3.785412

Liters (L)

Input
1 gal
Output
3.785412 l

1 Gallons (US) = 3.785412 Liters (L). Exact fixed factors — no live API. Useful for volume conversions in school, DIY, and travel.

Same value in other units

  • Milliliters (ml)3,785.4118
  • Liters (L)3.785412
  • Teaspoons (US)768
  • Tablespoons (US)256
  • Cups (US)16

Suggested next steps

  • Need distance or mass units? Open the Length or Weight converters.
  • Double-check whether a recipe uses US cups/gallons vs metric liters.
  • For percent math after a conversion, use the Percentage Calculator.

How the volume conversion works

  1. Enter a volume and pick the From unit
  2. Pick the To unit (or swap)
  3. The app converts through liters with fixed US/metric factors
  4. A short list shows the same amount in other volume units

No signup and no network call — conversions run in your browser.

Worked example

Convert 1 US gallon to liters:

  1. 1 gal × 3.785411784 ≈ 3.7854 L
  2. In cups: 1 × 16 = 16 cups
  3. In milliliters ≈ 3,785.41 ml

Useful for fuel cans, hydration goals, and resizing recipes between metric and US measures.

Methodology and notes

US liquid measures are used throughout. Dry pints/quarts and imperial UK gallons are omitted to keep the tool clear. For length and mass, use the dedicated Length and Weight converter pages.

Frequently asked questions

US customary units. A US gallon is about 3.785 L; an imperial (UK) gallon is larger. Always check which system a recipe or fuel listing uses.

Related tools

Related calculators — live tools and upcoming pages for internal linking.