Volume Converter
Quick answer: Choose a starting unit and a target unit, then enter a value. Common conversions: 1 L = 0.2641721 gal; 1 L = 1,000 mL; 1 L = 0.2199692 imp gal. This converter covers 15 volume units.
- Calculator
- Formula
- Examples
- Step by step
- Popular conversions
- Reading your result
- Mistakes
- FAQ
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- Method
Use the Volume Converter
Volume formula and what each symbol means
target = value × (factor of starting unit ÷ factor of target unit), where each factor is the unit value in L.
| Symbol | Meaning |
|---|---|
| value | The number you want to convert |
| factor | The unit’s size expressed in the base unit (L) |
Volume examples
L to gal
10 L = 2.641721 gal.
L to mL
10 L = 10,000 mL.
L to imp gal
10 L = 2.199692 imp gal.
How to calculate Volume step by step
- Choose the starting unit and the target unit.
- Enter your value.
- Read the converted value, plus the conversion factor in both directions.
Popular volume conversions
- Liters to mL converter
- Liters to Gallons (US) converter
- Liters to Imperial Gallons converter
- Liters to Cubic Meters converter
- Liters to Fluid Ounces converter
- mL to Liters converter
- mL to Gallons (US) converter
- mL to Imperial Gallons converter
- mL to Cubic Meters converter
- mL to Fluid Ounces converter
- Gallons (US) to Liters converter
- Gallons (US) to mL converter
- Gallons (US) to Imperial Gallons converter
- Gallons (US) to Cubic Meters converter
- Gallons (US) to Fluid Ounces converter
- Imperial Gallons to Liters converter
How to read your Volume result
US and imperial volume units differ, so always check which gallon, pint or fluid ounce you mean. The US gallon is exactly 3.785411784 litres and the imperial gallon is exactly 4.54609 litres, about 20% bigger.
| UNIT | SYMBOL | EQUALS | VALUE OF 1 L |
|---|---|---|---|
| Liter | L | 1 L = 1 L | 1 L |
| Milliliter | mL | 1 mL = 0.001 L | 1,000 mL |
| Cubic meter | m³ | 1 m³ = 1,000 L | 0.001 m³ |
| Cubic centimeter | cm³ | 1 cm³ = 0.001 L | 1,000 cm³ |
| US gallon | gal | 1 gal = 3.7854118 L | 0.2641721 gal |
| Imperial gallon (UK) | imp gal | 1 imp gal = 4.54609 L | 0.2199692 imp gal |
| US quart | qt | 1 qt = 0.94635295 L | 1.056688 qt |
| US pint | pt | 1 pt = 0.47317647 L | 2.113376 pt |
| US cup | cup | 1 cup = 0.23658824 L | 4.226753 cup |
| US fluid ounce | fl oz | 1 fl oz = 0.02957353 L | 33.81402 fl oz |
| US tablespoon | tbsp | 1 tbsp = 0.014786765 L | 67.62805 tbsp |
| US teaspoon | tsp | 1 tsp = 0.0049289216 L | 202.8841 tsp |
| Cubic foot | ft³ | 1 ft³ = 28.316847 L | 0.03531467 ft³ |
| Cubic inch | in³ | 1 in³ = 0.016387064 L | 61.02374 in³ |
| Oil barrel (42 US gal) | bbl | 1 bbl = 158.98729 L | 0.006289811 bbl |
Common mistakes when calculating Volume
- Using a US gallon where an imperial (UK) gallon is meant, which causes a 20% error.
- Confusing the US fluid ounce (about 29.57 mL) with the imperial fluid ounce (about 28.41 mL).
- Mixing liquid and dry measures: a US dry quart is not the same size as a US liquid quart.
Volume FAQ
How many litres are in a US gallon?
A US liquid gallon is exactly 3.785411784 litres.
How many litres are in an imperial gallon?
An imperial gallon is exactly 4.54609 litres.
How many millilitres are in a cup?
A US customary cup is about 236.59 mL. Metric cooking cups are often rounded to 250 mL.
What is the base unit for volume?
This converter uses liter (L) as the common base unit: every value is first converted to it and then to the target unit.
How do I convert between two volume units?
Choose the starting and target units, enter the value and read the result. By hand: convert to the base unit with the table, then divide by the target unit factor.
How many gallons are in 1 liter?
1 L = 0.2641721 gal.
How many mL are in 1 liter?
1 L = 1,000 mL.
How many Imperial Gallons are in 1 liter?
1 L = 0.2199692 imp gal.
Which volume units does this converter support?
It covers 15 units: liter (L), milliliter (mL), cubic meter (m³), cubic centimeter (cm³), US gallon (gal), imperial gallon (imp gal), US quart (qt), US pint (pt), US cup (cup), US fluid ounce (fl oz), US tablespoon (tbsp), US teaspoon (tsp), cubic foot (ft³), cubic inch (in³), oil barrel (bbl).
How accurate is the volume converter?
Results are calculated at full double precision and shown to about 8 significant figures. Round the answer to the precision of your original measurement; a result cannot be more accurate than the number you started with.
More in Volume converters
- Cubic Meters to Fluid Ounces Converter
- mL to Liters Converter
- Cubic Meters to Gallons (US) Converter
- mL to Imperial Gallons Converter
- Cubic Meters to Imperial Gallons Converter
- mL to Gallons (US) Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, NIST Handbook 44, Appendix C: units and systems of measurement