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

Are these US or UK cups and gallons?

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.

How many liters in a US gallon?

Exactly 3.785411784 liters per US liquid gallon. Enter 1 gallon and choose liters as the target to see it instantly.

Can I convert cooking measures?

Yes — teaspoons, tablespoons, cups, pints, quarts, and fluid ounces are included alongside metric ml and L for kitchen scaling.

Does this convert weight of flour or sugar?

No. Volume ≠ weight for ingredients with different densities. Convert cups to ml here, then use a recipe’s gram guidance or the Weight Converter for mass.

Related tools

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