Volume Converter

1 us_gal equals 3.785411784 l.

How it works

• Expressed the source unit (US gallon (gal)) in litres.
• Divided by the target unit (litre (L)) expressed in litres.
• Rounded the result to 12 significant digits.

1 us_gal = 3.785411784 l

• Both units measure volume, so the conversion is a single exact multiplication.

Methodology

1. Express every unit as an exact factor to the litre base.
2. Multiply the input by the source factor and divide by the target factor.
3. Use the exact international definitions (1 in = 0.0254 m, 1 US gal = 231 in³, 1 imp gal = 4.54609 L) so no rounded factor is introduced.
4. Round the result to 12 significant digits, which keeps a convert-then-convert-back operation within floating-point tolerance.

Usage

1. Enter the volume value.
2. Choose the source and target volume units.
3. Read the converted value and the conversion formula.

Examples

These are examples, not current values: they use fixed inputs, while the interactive tool computes live results in your browser.

US gallons to litres

{
  "value": 1,
  "from": "us_gal",
  "to": "l"
}

US gallons to fluid ounces

{
  "value": 1,
  "from": "us_gal",
  "to": "us_floz"
}

Cubic feet to litres

{
  "value": 1,
  "from": "ft3",
  "to": "l"
}

Cubic metres to litres

{
  "value": 1,
  "from": "m3",
  "to": "l"
}

Limitations

Exact volume factors

Volume units derive from length units, so cubes of exact lengths stay exact: 1 ft³ = 28.316846592 L and 1 in³ = 0.016387064 L. The US liquid gallon is fixed at 231 in³ and the imperial gallon at 4.54609 L, so both customary systems convert without approximation.

Metric volume is defined from the metre, and 1 m³ = 1000 L exactly, so the metric side of the table carries no rounding at all.