Volume Converter: Liters, Gallons, Cups
Convert volume units — liters, milliliters, gallons, quarts, pints, cups, fluid ounces, and cubic meters.
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Volume Converter: Liters, Gallons, Cups Volume conversion is essential in cooking, chemistry, fuel economy, and fluid engineering. The challenge is the existence of three parallel systems — metric, US customary, and Imperial (UK) — that share unit names but sometimes use different values. --- The Metric Volume System The SI unit of volume is the cubic metre (m³). Litres are commonly used for everyday quantities. | Unit | Symbol | Relation to litre | |---|---|---| | Microlitre | µL | 0.000001 L | | Millilitre | mL | 0.001 L | | Centilitre | cL | 0.01 L | | Decilitre | dL | 0.1 L | | Litre | L | 1 L | | Cubic decimetre | dm³ | 1 L (exact) | | Hectolitre | hL | 100 L | | Cubic metre | m³ | 1,000 L | The litre is defined as exactly 1 cubic decimetre (1 dm³ = 10 cm × 10 cm × 10 cm). Water at…
Frequently Asked Questions
How do I convert liters to gallons?
For US gallons: multiply liters by 0.264172. For UK (imperial) gallons: multiply by 0.219969. A US gallon is 3.78541 liters; a UK gallon is 4.54609 liters. For fuel economy comparisons between US and UK figures, always specify which gallon is used.
How many cups in a liter?
1 liter = 4.22675 US customary cups. Since 1 US cup = 236.588 mL, four cups give 946.35 mL — slightly under a liter. In metric cooking, a 250 mL cup is sometimes used, giving exactly 4 cups per liter.
What is the difference between US and UK gallons?
The US liquid gallon is 3.78541 liters. The UK (imperial) gallon is 4.54609 liters — about 20% larger. Fuel economy figures are affected: 30 mpg (US) = 25 mpg (UK). Car reviews and fuel price comparisons must specify which system is used.
How do I convert cubic meters to liters?
1 cubic meter = 1,000 liters exactly. This is because 1 liter is defined as 1 cubic decimeter (1 dm³), and 1 m³ = 1,000 dm³. To convert: multiply cubic meters by 1,000 to get liters.
How many milliliters in a teaspoon?
In the US customary system: 1 teaspoon = 4.92892 mL. In the metric cooking system: 1 teaspoon = exactly 5 mL. UK teaspoons historically varied; modern UK cooking standardizes at 5 mL. For pharmaceutical dosing in the US, 5 mL per teaspoon is the standard.
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