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Volume Converter

Convert liters, cubic units and explicitly distinguished US and Imperial liquid units.

Your numbers

Make it your own
Updates as you type
Converted value
3.7854L

Calculated from your inputs · rounded for display

Original1us_gal

International unit definitions. US and Imperial gallons and fluid ounces are different units; select the intended standard.

Your calculation, step by step

No black boxes
  1. Convert through liters.
  2. 1 × 3.785412 ÷ 1 = 3.785412 L.

How to use this calculator

  1. Enter your own values in the labeled fields. Check the units and assumptions before comparing results. Only the fields needed for your selected calculation mode are shown.
  2. Your answer updates automatically. Review the calculation steps to see exactly how it was calculated.
  3. Copy, share, save, or download your result. Saved inputs stay on this device.

How the calculation works

Output = input × liters per source unit / liters per destination unit

Select the intended gallon and fluid-ounce standard. US liquid units and Imperial units have different sizes. A fluid ounce measures volume, while a mass ounce belongs in Weight Converter. Volume alone cannot determine ingredient mass without an appropriate density or measured conversion factor.

A worked example

1 US liquid gallon = 3.785411784 L; 1 Imperial gallon = 4.54609 L.

Reading your result

Use the main result together with its units and supporting figures. Display values are rounded; calculations keep their underlying precision. A change in inputs or assumptions can change the answer. Compare the step-by-step working with your intended use before relying on an estimate.

Frequently asked questions

Are ounces a mass or volume unit here?

All ounces here are explicitly fluid ounces, a volume unit.

Can I convert liters to kilograms?

Not without a material-specific density.

Sources & methodology

NIST: international unit conversion factors ↗

Formula review: October 24, 2026. Read our methodology.