11 units · 110 conversions

Volume Converter

Convert litres, gallons, cups, pints and cooking measures.

Popular Volume conversions

All Volume conversions (110)

All Volume units

Liters L Milliliters mL Cubic Meters US Gallons gal (US) UK Gallons gal (UK) Quarts qt Pints pt Cups cup Fluid Ounces (US) fl oz Tablespoons tbsp Teaspoons tsp

About Volume

Volume covers eleven units and is the category where cooking, chemistry and fuel economy all collide. On the metric side there are liters, milliliters and cubic meters. On the other side there are US gallons and UK gallons, quarts, pints, cups, fluid ounces, tablespoons and teaspoons. Most visitors arrive from a kitchen or a car. They are working through an American recipe that measures in cups, scaling a batch up from milliliters, filling a fuel tank quoted in gallons, or mixing a solution to a stated volume. The pairs that get the most use are liters to US gallons, milliliters to cups, cups to milliliters and liters to milliliters.

Volume has more traps than any other category, and they are all worth knowing. First, the US gallon and the UK gallon are not the same size, and the UK one is noticeably larger. That is why a car quoted at a certain miles per gallon looks more efficient in British figures than American ones, and why this hub lists them as two separate units rather than one. Second, fluid ounces differ between the US and the UK too, so a recipe or a drink measure written in fluid ounces depends on which country wrote it. The fluid ounce here is the US one, which is what the overwhelming majority of recipes online use. Third, a fluid ounce measures volume, not weight, and it is not interchangeable with the ounce on your kitchen scale, which is why an ounce of flour and a fluid ounce of flour are different amounts. Finally, cups, tablespoons and teaspoons are cooking measures rather than precise scientific ones, and cup sizes have varied by country and era, so treat them as practical rather than exact.

Every pair page here shows the formula behind the result, gives a worked example with realistic numbers, and includes a reference table of common amounts, which is the fastest option when you just need to know what a standard measure comes to. The pages are free, ask for no sign-up, and do all their arithmetic in your browser, so nothing you enter is uploaded. If your recipe measures ingredients by weight rather than by volume, the weight converter is the hub you want.

Frequently asked questions

Is a US gallon the same as a UK gallon?

No, and the gap is large enough to matter. The UK or imperial gallon is meaningfully bigger than the US gallon, so the same tank holds a different number of each. This is why fuel economy figures look better in UK miles per gallon than in US ones for the same car. Because they are genuinely different units, this hub lists US gallons and UK gallons separately, and you should pick the one your source actually meant.

Are US and UK fluid ounces the same?

They are not. The US fluid ounce and the UK fluid ounce are different sizes, so a measure written in fluid ounces depends on who wrote it. The fluid ounce used on this site is the US one, since the great majority of recipes and drink measures online are American. If you are following a specifically British source that uses imperial fluid ounces, convert with that in mind.

Can I convert cups of an ingredient to grams?

Not directly, because a cup measures volume and a gram measures weight, and the relationship between them depends on what the ingredient is. A cup of flour and a cup of honey occupy the same space but weigh very different amounts. These pages convert volume to volume, so a cup converts cleanly to milliliters or fluid ounces. To reach grams you need the density of that specific ingredient as well.

How accurate are cups, tablespoons and teaspoons?

They are practical cooking measures rather than precise laboratory ones, and their definitions have varied between countries and over time. They work perfectly well for recipes, where a small variation rarely spoils anything. If you need real precision, for baking ratios or for chemistry, measure in milliliters or weigh the ingredient instead, and use the tablespoon and teaspoon pages only for a working estimate.

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