Volume converter
ConvertersNo. 22 / 24approved
One value, every volume — millilitres, litres, cups, pints, gallons and more at once. Because a cup means different things to bakers and plumbers.
4 cups ≈ 1 litre — good enough for soup, risky for science.
work surface
Math, not advice — results are indicative. Read the disclaimer.
most-used utilities
Glass of water
Eight fluid ounces of water. One glass closer to the daily quota.
Daily water goal
Eight cups a day. Your kidneys applaud; your bladder negotiates.
Coffee cup
Twelve fluid ounces of coffee. The morning's only true metric.
Recipe: soup
Four cups of soup. Enough for a family, or for you, in winter.
Fuel tank
Sixteen gallons of optimism, also known as a fuel tank.
The big jug
One US gallon: four quarts, eight pints, sixteen cups of commitment.
pro tips
A US cup is 236.5882365 ml. The recipe author memorised it, so should you.
A US gallon is 3.785 litres, a UK gallon is 4.546 — two nations that can't agree on capacity.
Rough math: 4 cups ≈ 1 litre. Good enough for soup, risky for science.
what it does
Type a number, pick its unit, and every other volume unit updates at the same time. Millilitres, centilitres, litres, cubic metres, teaspoons, tablespoons, fluid ounces, cups, pints and gallons — the whole measuring jug in one screen.
The conversion runs through millilitres, the unit everyone quietly agrees on. Click any result to copy that particular value, because someone will always ask for the number in cups.
Handy for recipes, hydration goals, fuel tanks and the eternal "is that a big one or a small one?" — the question that splits kitchens and nations.
Use it when a recipe says cups and you own a measuring jug in millilitres, when you're tracking water in litres but the bottle says millilitres, or when the fuel gauge speaks gallons and the pump speaks litres. One value, every unit at once — click any result to copy it and get back to the soup.
quick answers
How many ml are in a cup?
A US cup is 236.588 ml, roughly 240 ml in most recipes. The widget gives you the exact number.
Are US and UK gallons different?
Yes — a US gallon is 3.785 litres, a UK gallon is 4.546. Two nations, one word, two answers.
How do you convert litres to gallons?
Divide by 3.785 for US gallons (or 4.546 for UK). The widget shows both paths in one screen.
Does a teaspoon really matter?
In baking, yes — a teaspoon is about 4.93 ml, and chemistry-sized accuracy keeps the cake from becoming a brick.