Volume converter
Unit conversionHow much is that in other volume units?
Convert between millilitres, litres, cubic metres, US gallons and imperial gallons, exactly.
What you enter stays on your device while you use this tool. Opening a shared link sends the settings in its address to HowToolbox to prepare the page.
Result
0.2642 US gal
1 litre is about 0.2642 US gallons
- The other way round: 1 US gal ≈ 3.785 L.
In all units
- Millilitres
- 1,000 ml
- Centilitres
- 100 cl
- Litres
- 1 L
- Cubic metres
- 0.001 m³
- US fluid ounces
- 33.81 US fl oz
- US pints
- 2.113 US pt
- US quarts
- 1.057 US qt
- US gallons
- 0.2642 US gal
- Imperial fluid ounces
- 35.2 imp fl oz
- Imperial pints
- 1.76 imp pt
- Imperial gallons
- 0.22 imp gal
- Cubic millimetres
- 1,000,000 mm³
- Cubic centimetres
- 1,000 cm³
- Cubic inches
- 61.02 in³
- Cubic feet
- 0.03531 ft³
- Cubic yards
- 0.001308 yd³
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Convert between millilitres, litres, cubic metres, US gallons and imperial gallons, exactly.
How to use
- Type the volume you want to convert.
- Choose the units to convert from and to. Use the swap button to flip them.
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How it works
Every unit is converted through litres using exact definitions: a millilitre is 0.001 L, a cubic metre is 1,000 L, a US liquid gallon is 231 cubic inches or exactly 3.785411784 L, and an imperial (UK) gallon is exactly 4.54609 L. So 1 L is 1 ÷ 3.785411784 ≈ 0.26417 US gallons, and 10 US gallons is about 37.85 L.
The definitions come from NIST Special Publication 811 (US gallon), the UK Weights and Measures Act 1985 (imperial gallon) and the BIPM SI Brochure (litre and cubic metre).
The two gallons are different sizes: the imperial gallon is about 20 % larger than the US gallon. Check which one a label or a fuel price uses.
Frequently asked questions
How many litres are in a US gallon?
Exactly 3.785411784 L, about 3.785 L. Multiply gallons by 3.785 to get litres, or divide litres by 3.785 to get gallons.
Is a UK gallon the same as a US gallon?
No. An imperial gallon is 4.54609 L, about 20 % bigger than a US gallon at 3.785 L.
How many millilitres are in a litre?
A litre is 1,000 mL, and also 1 cubic decimetre. A cubic metre is 1,000 L.
Can I convert litres to kilograms?
Only if you know the substance’s density. Mass in kg equals volume in litres multiplied by density in kg/L; this tool only converts volume.
Is a cubic centimetre the same as a millilitre?
Yes, exactly: 1 cm³ = 1 mL. So 500 cm³ is 500 mL, or 0.5 L.
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