Volume Converter
Convert between any two liter units in your browser — instant, accurate, and private.
Example
1 m³ = 1,000 L. Switch the unit menus to convert between any pair.
How it works
Every value is converted through a single liter base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Volume conversion shows up constantly in everyday life: scaling a recipe from a US cookbook to a metric kitchen, filling a fish tank or pool, dosing fertilizer, comparing fuel tank capacities, or shipping liquids where freight is priced by the cubic foot or cubic meter. Because this tool spans 13 units across three measurement worlds — metric (cubic meter, liter, milliliter), US customary (gallon, quart, pint, cup, fluid ounce, tablespoon, teaspoon), and the imperial system still used in the UK and Commonwealth — it lets you cross between systems that were never designed to line up neatly.
The metric units descend from the liter, originally defined as the volume of one kilogram of water, so the chain stays clean: 1 m³ = 1,000 L = 1,000,000 mL. The cooking and gallon units come from the older English wine and ale measures, which is why the US and the British eventually standardized differently. The US gallon is the old wine gallon of 231 cubic inches (about 3.785 L), while the imperial gallon was redefined in 1824 as 4.546 L. The cubic foot and cubic inch are pure length-cubed units, anchored to the exact definition 1 inch = 2.54 cm.
Handy rules of thumb: a liter is just a touch more than a US quart (1.057 quarts), a US gallon is roughly 3.8 L (rule of thumb "four liters minus a splash"), and a cubic foot holds almost exactly 7.48 US gallons. In the kitchen, 1 tablespoon = 3 teaspoons and 1 US cup = 16 tablespoons = 8 US fluid ounces, so a quick mental conversion is "240 mL to a cup, 15 mL to a tablespoon, 5 mL to a teaspoon."
The classic mistake is treating a US gallon and an imperial gallon as the same thing — the imperial gallon is about 20% larger (4.546 L vs 3.785 L), so a UK recipe or a UK car's "miles per gallon" figure will be off by a fifth if you assume US units. The same gap quietly affects quarts, pints, cups, and fluid ounces, which all differ between the two systems. Also watch precision with the cubic-foot-to-gallon links: 7.48 is a rounded value (the exact figure is 7.4805), so for tank sizing or billing, carry extra decimals rather than rounding early.
Frequently asked questions
What does the volume converter do?
It converts between common liter units instantly. Pick a unit to convert from and a unit to convert to, type a value, and the result updates live.
Which units does this converter support?
It includes 13 units: Cubic meter, Liter, Milliliter, US gallon, Imperial gallon, US quart, US pint, US cup, US fluid ounce, Tablespoon, Teaspoon, Cubic foot, Cubic inch.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many liters are in a US gallon vs an imperial gallon?
A US gallon is about 3.785 liters, while an imperial (UK) gallon is about 4.546 liters. The imperial gallon is roughly 20% larger, so the two are not interchangeable.
How many milliliters are in a US cup?
A US cup is about 237 mL (legally 240 mL for nutrition labeling). It equals 8 US fluid ounces, 16 tablespoons, or 48 teaspoons.
How many cubic feet are in a cubic meter?
One cubic meter is about 35.31 cubic feet. Conversely, one cubic foot is roughly 0.0283 cubic meters, or about 28.3 liters.
How many tablespoons are in a US fluid ounce?
There are exactly 2 tablespoons in 1 US fluid ounce, since a US tablespoon is about 14.79 mL and a fluid ounce is about 29.57 mL.
How many US gallons fit in a cubic foot?
A cubic foot holds about 7.48 US gallons (more precisely 7.4805). This is commonly used to estimate tank, aquarium, and water-heater capacities.
How many teaspoons are in a tablespoon?
There are exactly 3 teaspoons in 1 tablespoon. In metric terms that's about 5 mL per teaspoon and 15 mL per tablespoon.
Is a liter bigger than a quart?
Yes, slightly. One liter equals about 1.057 US quarts, so a liter is a little larger than a US quart and a US quart is about 0.946 liters.
How many milliliters are in a US fluid ounce?
A US fluid ounce is about 29.57 mL. Note that a UK/imperial fluid ounce is slightly smaller at about 28.41 mL.
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