Free volume converter. Convert between liters, US gallons, milliliters, cups, tablespoons, cubic meters and more with one tap.
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Enter a value, choose a from unit and a to unit. The calculator first converts your value to liters using the from unit factor, then divides by the to unit factor to give the converted result and the equivalent in liters.
This volume converter uses liters as the shared base for every conversion, so one clear method handles metric units, US customary units, and imperial units alike. First, your value is multiplied by the liters factor of the unit you chose as the source, which gives the same amount expressed in liters. Next, that liters figure is divided by the liters factor of your target unit, which gives the converted result. The page also shows the liters equivalent beside the main result, so you can check the middle step at a glance. Because the same route is used for every pair, a liters to gallons converter task, a milliliters to cups task, and a cubic meters to liters task all follow exactly the same logic. You never need a separate formula for each direction, and the result stays consistent whether you convert forward or back. The method works for any liquid volume, from a small medicine dose to a large fuel tank.
Liters to US gallons is the most searched volume pair, and the rule is simple once the factor is fixed. One US gallon equals 3.78541 liters, so to convert liters to gallons you divide by 3.78541, and to convert gallons to liters you multiply by 3.78541. For example, 2 gallons to liters is 2 times 3.78541, which is 7.57082 liters, or about 7.57 liters. Going the other way, 10 liters divided by 3.78541 is about 2.64 US gallons. The same idea works for imperial gallons to liters, except the factor is 4.54609 liters per imperial gallon, so imperial gallons give a larger liters result than US gallons for the same number. Always check which gallon your recipe, fuel figure, or container uses before you convert, because the two gallons are not interchangeable.
Milliliters to cups causes more kitchen mistakes than any other volume pair, because a cup is not one fixed size around the world. A US cup is 236.588 milliliters, which most recipes round to 237 ml, while a metric cup is exactly 250 ml, and an imperial cup is about 284 ml. That means 500 ml to cups is about 2.11 US cups but exactly 2 metric cups, a gap that grows when a recipe uses several cups. To convert milliliters to cups, divide the milliliter value by the cup size that matches your recipe. To convert cups to milliliters, multiply the number of cups by that same cup size. If a recipe does not say which cup it means, check where it was written: US recipes usually mean the US cup, while many Australian and European recipes mean the metric cup.
Small kitchen units are not enough when you measure a tank, a pool, a shipment, or a building material, and that is where cubic meters and cubic feet come in. One cubic meter equals 1000 liters, so cubic meters to liters is a simple multiplication by 1000, and liters to cubic meters is a division by 1000. Cubic feet to gallons needs a different step: one cubic foot equals 28.3168 liters, and one US gallon equals 3.78541 liters, so one cubic foot is about 7.48 US gallons. A cubic meters to cubic feet conversion is also common in construction, since one cubic meter is about 35.31 cubic feet. Use cubic meters for large metric volumes, cubic feet for large US volumes, and liters for everyday liquids, and let the converter handle the step between them.
The US gallon vs imperial gallon difference is the biggest trap in volume conversion, and it affects pints, quarts, cups, and fluid ounces as well. A US gallon is 3.78541 liters, while an imperial gallon is 4.54609 liters, so the imperial gallon is about 20 percent larger. That means one liter is about 0.264 US gallons but only about 0.220 imperial gallons. The same name problem appears lower down the scale: a US pint is 473 ml and holds 16 US fluid ounces, while an imperial pint is 568 ml and holds 20 imperial fluid ounces. A US gallon breaks into 4 quarts, 8 pints, 16 cups, and 128 fluid ounces. If you convert a UK fuel figure or a UK recipe with a US gallon factor, the error will be large, so confirm the system first and pick the matching gallon in the converter.
Cooking volumes link the kitchen to the metric system through cups, tablespoons, teaspoons, and fluid ounces, and each one has a fixed milliliter value. One US tablespoon equals 14.7868 milliliters, so tablespoons to milliliters is a multiplication by 14.7868, and milliliters to tablespoons is a division by the same number. One US cup equals 236.588 milliliters, one US fluid ounce equals about 29.5735 milliliters, and one US pint equals 473.176 milliliters. A quick kitchen check helps: 250 ml is about one metric cup, 500 ml is about two US cups, and 1000 ml is one liter. For baking, where ratios matter most, a small cup size error can change texture, so use the exact cup size from your recipe and measure liquids at eye level in a clear jug.
Worked examples make the formula easy to trust, because you can follow each number from input to answer. Example one: 2 gallons to liters. Multiply 2 by 3.78541 to get 7.57082 liters, rounded to 7.57 liters. Example two: 500 ml to cups. First convert 500 ml to 0.5 liters, then divide 0.5 by 0.236588 to get about 2.11 US cups. Example three: 3 cups to milliliters. Multiply 3 by 236.588 to get 709.764 milliliters, rounded to 710 milliliters. Useful reference values are 1 liter equals 1000 milliliters, 1 US gallon equals 3.78541 liters, 1 imperial gallon equals 4.54609 liters, 1 cubic meter equals 1000 liters, and 1 cubic foot equals 28.3168 liters. Keep these anchors in mind and the converter result will always look familiar.
Most volume errors come from three habits: using the wrong gallon, using the wrong cup, and confusing volume with weight. Fix the first two by naming the system before you convert, US or imperial, and by matching the cup to the recipe, US cup or metric cup. Fix the third by remembering that volume is not weight: one liter of water weighs about one kilogram, but one liter of oil or flour weighs less, because density differs. Round only at the end of a calculation, not in the middle, so small rounding errors do not stack up. For everyday cooking and fuel, one or two decimal places are enough, while laboratory work needs full precision and a calibrated measure. When a result looks surprising, check the gallon, check the cup, and re-run the conversion with the other system to see which one fits your source.
One US gallon equals 3.78541 liters. To convert US gallons to liters, multiply the gallons by 3.78541. To convert liters to US gallons, divide the liters by 3.78541.
A US gallon is 3.78541 liters, while an imperial gallon is 4.54609 liters, so the imperial gallon is about 20 percent larger. The difference also changes pints, quarts, cups, and fluid ounces, so always confirm whether a measurement is US or imperial before converting.
There are exactly 1000 milliliters in one liter. To convert liters to milliliters, multiply by 1000. To convert milliliters to liters, divide by 1000.
A US cup is 236.588 milliliters, usually rounded to 237 ml, while a metric cup is exactly 250 ml. To convert ml to cups, divide the milliliters by the cup size that matches your recipe.
Use the convert liters to gallons formula: US gallons equals liters divided by 3.78541. For example, 10 liters divided by 3.78541 is about 2.64 US gallons. For imperial gallons, divide liters by 4.54609 instead.
One US gallon contains 16 US cups. It also contains 4 quarts, 8 pints, and 128 US fluid ounces. An imperial gallon contains a different number of imperial cups, so check the system first.
A US pint contains 16 US fluid ounces, about 473 milliliters. An imperial pint contains 20 imperial fluid ounces, about 568 milliliters. The pint is much larger in the imperial system.
There are 1000 liters in one cubic meter. Cubic meters are used for large volumes such as water tanks, swimming pools, shipping containers, and construction materials, while liters suit everyday liquids.
To convert cubic feet to gallons, first convert cubic feet to liters using 28.3168 liters per cubic foot, then divide by 3.78541 liters per US gallon. In short, one cubic foot is about 7.48 US gallons.
One US tablespoon equals 14.7868 milliliters. To convert tablespoons to milliliters, multiply the tablespoons by 14.7868. To convert milliliters to tablespoons, divide the milliliters by 14.7868.
One cubic foot equals 28.3168 liters. To convert cubic feet to liters, multiply the cubic feet by 28.3168. To convert liters to cubic feet, divide the liters by 28.3168.