Volume Converter
Liters, cups, pints and gallons, US and UK kept apart.
1 l in every unit
| Milliliters | 1,000 ml |
| Liters | 1 l |
| Teaspoons (US) | 202.884 tsp |
| Tablespoons (US) | 67.628 tbsp |
| Cups (US) | 4.22675 cup |
| Fluid ounces (US) | 33.814 US fl oz |
| Fluid ounces (UK) | 35.1951 UK fl oz |
| Pints (US) | 2.11338 US pt |
| Pints (UK) | 1.75975 UK pt |
| Gallons (US) | 0.264172 US gal |
| Gallons (UK) | 0.219969 UK gal |
How this was worked outliters → US gal 0.2641720524
- 1 l → liters1
- liters → US gal0.2641720524
A US gallon and an imperial gallon are different volumes, and so are their pints and cups. These are the US ones.
Guide: A US pint and a UK pint are different drinks2 min read
A US pint and a UK pint are different drinks
A US pint is 473 ml. A UK pint is 568 ml — twenty per cent larger. Both are called a pint, both are ordered in bars, and a recipe that does not say which one it means is genuinely ambiguous.
The gallons differ for the same reason: 3.79 liters in the United States against 4.55 in the United Kingdom. Fuel economy figures in miles per gallon are not comparable between the two countries without converting first, which is why British and American cars appear to differ more than they do.
Cups are the worst of them
A US cup is 236.6 ml. A metric cup, used in Australia and New Zealand, is 250 ml. A Japanese cup is 200. A recipe written in cups without saying whose cups can be out by six per cent before you start.
The cup here is the US one, because that is what the overwhelming majority of recipes written in cups are using. For baking, where six per cent matters, weigh the ingredients instead — a cup of flour varies by more than that depending on how it was packed.
Fluid ounces do not match ounces
A fluid ounce measures volume and an ounce measures weight, and they only coincide for water, roughly, by historical accident. A fluid ounce of honey weighs half as much again as a fluid ounce of water.
The US and UK fluid ounces also differ — 29.6 ml against 28.4 — and unusually, this is the one case where the American measure is the larger of the two.
Nothing is sent anywhere
Every conversion on this page is arithmetic done in your own browser. No request is made, nothing is stored between visits, and the page keeps working with the connection switched off — which is a reasonable way to check the claim.
Frequently asked questions
Which cup does my recipe mean?
If the recipe is American, the US cup at 236.6 ml. If it is Australian or from a metric cookbook, 250 ml. British recipes rarely use cups at all and give weights instead, which is the more reliable approach for anything baked.
How do I convert a dry ingredient from cups to grams?
You cannot, not from volume alone. A cup of flour is about 120 g and a cup of sugar about 200 g, because the ingredients have different densities and pack differently. Any single number a converter gives you for that is a guess dressed up as arithmetic.
Why is US fuel economy always a lower number?
Because the US gallon is smaller. 40 miles per UK gallon is only 33 per US gallon — the same car, the same fuel, a different measure. Convert before comparing anything quoted in miles per gallon across the Atlantic.
Is anything sent anywhere?
No. Everything happens in this tab, and the page works with the connection off.