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Volume Converter

Recipe conversions go wrong because kitchen volumes are not round numbers: a US cup is 236.588 milliliters, a tablespoon is 14.79, and a US gallon is 3.785 liters. This converter moves between liters, milliliters, US gallons, quarts, pints, cups, fluid ounces, and tablespoons — all on the US definitions the factors above reflect.

In Milliliters
1,000mL
1 L = 1,000 mL
Value
From
To
US measures, not metric or UK
This uses US customary units. A US cup is 236.6 mL, but a metric cup is 250 mL and a UK cup is 284 mL; the US gallon (3.785 L) is smaller than the imperial gallon (4.546 L).
Volume isn't weight
A cup measures the space an ingredient fills, not its mass, so a cup of flour and a cup of water weigh very differently. For grams of a dry ingredient, use a weight converter.
All units
Liters1
Milliliters1,000
Gallons (US)0.2642
Quarts (US)1.0567
Pints (US)2.1134
Cups (US)4.2268
Fluid oz (US)33.8141
Tablespoons67.6279
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Uses your inputs above
1,000 in milliliters. Want to try a variation?

The math

Reviewed 2026
Formula
Multiply or divide by the conversion factor to a base unit.

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Temperature
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Example: how volume is calculated

Step-by-step with default inputs

Suppose you put the default values into Volume Converter:

Value
1
From
Liters
To
Milliliters

Plug those into the formula Multiply or divide by the conversion factor to a base unit. and the result is:

In Milliliters
1,000mL
Volume units and their conversion factors
UnitSymbolIn liters
LitersL1
MillilitersmL0.001
Gallons (US)gal3.7854
Quarts (US)qt0.9464
Pints (US)pt0.4732
Cups (US)cup0.2366
Fluid oz (US)fl oz0.02957
Tablespoonstbsp0.01479

Source: NIST official conversions

How does the volume converter work?

Volume Converter uses the formula shown in the math card and cites NIST official conversions. Inputs are validated for sensible ranges; results are computed client-side for instant feedback and do not leave your browser.

References: NIST official conversions.

Last reviewed July 2, 2026 · Editorial policy

Frequently asked questions

How many cups are in a US gallon?

16 cups. A US gallon is 3.78541 liters, which also divides evenly into 4 quarts or 8 pints.

How many tablespoons are in a cup?

16 tablespoons. A US cup holds 236.588 mL and a tablespoon 14.787 mL, which is also why half a cup is a convenient 8 tablespoons.

How many fluid ounces are in a liter?

About 33.81 US fluid ounces. One US fluid ounce is 29.5735 milliliters, so a liter holds 1,000 divided by 29.5735 of them.

How accurate is this volume calculator?

The math is deterministic — the same inputs always produce the same output, and the formula is shown above. Accuracy of the answer for your situation depends on how well your inputs match reality and how well the formula models the question.

Why does Google show a slightly different conversion?

For most units the answer is identical to many decimal places. Differences usually come from currency rates (which fluctuate intraday — this tool shows the ECB's daily reference rates) or rounding. We display up to 4 decimals.

How do I share my result?

Hit Share at the top of the page. Every input you change is encoded in the URL, so a permalink reproduces exactly what you see. No account needed.