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Convert between volume units by multiplying by the appropriate conversion factor.
Enter your parameters below to calculate results.
The Volume Conversion tool converts values between metric, SI, U.S. customary, Imperial, cubic-length, and selected engineering volume units. Enter a value in any supported unit to calculate the equivalent volume in the other units.
Volume measures the three-dimensional space occupied by a substance or object. The SI unit of volume is the cubic meter, symbol m3. The liter, symbol L, is accepted for use with SI and is equal to one cubic decimeter.
Select unit names carefully. A U.S. gallon is not the same as an Imperial gallon, and a U.S. liquid pint is not the same as a U.S. dry pint. Cups, tablespoons, teaspoons, barrels, and drops may also have different definitions depending on the country, industry, or application.
To convert reliably between two volume units, use cubic meters as an intermediate reference:
Target value = Source value × Source factor in m3 / Target factor in m3
For example, one liter has a factor of 0.001 m3, while one milliliter has a factor of 0.000001 m3. Therefore:
1 L = 0.001 / 0.000001 = 1000 mL
| Unit | Symbol | Equivalent in Cubic Meters | Equivalent in Liters |
|---|---|---|---|
| Cubic kilometer | km3 | 1000000000 m3 | 1000000000000 L |
| Cubic meter | m3 | 1 m3 | 1000 L |
| Cubic decimeter | dm3 | 0.001 m3 | 1 L |
| Liter | L | 0.001 m3 | 1 L |
| Cubic centimeter | cm3 | 0.000001 m3 | 0.001 L |
| Milliliter | mL | 0.000001 m3 | 0.001 L |
| Cubic millimeter | mm3 | 0.000000001 m3 | 0.000001 L |
| Microliter | µL | 0.000000001 m3 | 0.000001 L |
| Nanoliter | nL | 0.000000000001 m3 | 0.000000001 L |
| Picoliter | pL | 0.000000000000001 m3 | 0.000000000001 L |
One milliliter, one cubic centimeter, and one cc represent the same volume. For technical writing, mL or cm3 is clearer than cc because the symbols are standardized and less ambiguous.
| Unit | Symbol | Liters |
|---|---|---|
| Exaliter | EL | 1018 L |
| Petaliter | PL | 1015 L |
| Teraliter | TL | 1012 L |
| Gigaliter | GL | 109 L |
| Megaliter | ML | 106 L |
| Kiloliter | kL | 1000 L |
| Hectoliter | hL | 100 L |
| Dekaliter | daL | 10 L |
| Liter | L | 1 L |
| Deciliter | dL | 0.1 L |
| Centiliter | cL | 0.01 L |
| Milliliter | mL | 10-3 L |
| Microliter | µL | 10-6 L |
| Nanoliter | nL | 10-9 L |
| Picoliter | pL | 10-12 L |
| Femtoliter | fL | 10-15 L |
| Attoliter | aL | 10-18 L |
SI prefixes are case-sensitive. ML means megaliter, while mL means milliliter. Confusing uppercase M with lowercase m changes the value by a factor of one billion.
| U.S. Liquid Unit | Symbol | Equivalent Volume |
|---|---|---|
| U.S. gallon | gal | 3.785411784 L |
| U.S. liquid quart | qt | 0.946352946 L |
| U.S. liquid pint | pt | 0.473176473 L |
| U.S. cup | cup | 236.5882365 mL |
| U.S. fluid ounce | fl oz | 29.5735295625 mL |
| U.S. tablespoon | tbsp | 14.78676478125 mL |
| U.S. teaspoon | tsp | 4.92892159375 mL |
| U.S. gill | gi | 118.29411825 mL |
| U.S. fluid dram | fl dr | 3.6966911953125 mL |
| U.S. minim | min | 0.061611519921875 mL |
These are U.S. customary liquid measures. U.S. dry pints and dry quarts use different volumes and must not be substituted for the liquid versions.
| U.S. Dry Unit | Equivalent Volume |
|---|---|
| Dry pint | 0.5506105 L |
| Dry quart | 1.101221 L |
| Peck | 8.809768 L |
| Bushel | 35.23907 L |
| Imperial Unit | Symbol | Equivalent Volume |
|---|---|---|
| Imperial gallon | gal | 4.54609 L |
| Imperial quart | qt | 1.1365225 L |
| Imperial pint | pt | 568.26125 mL |
| Imperial gill | gi | 142.0653125 mL |
| Imperial fluid ounce | fl oz | 28.4130625 mL |
| Imperial fluid dram | fl dr | 3.5516328125 mL |
| Imperial minim | min | 0.0591938802083 mL |
| Unit | Liters | Fluid Ounces in Its Own System |
|---|---|---|
| 1 U.S. gallon | 3.785411784 L | 128 U.S. fl oz |
| 1 Imperial gallon | 4.54609 L | 160 Imperial fl oz |
The Imperial gallon is approximately 20.1% larger than the U.S. gallon. However, the U.S. fluid ounce is slightly larger than the Imperial fluid ounce. Always retain the system label when reporting these units.
| Unit | Equivalent Volume |
|---|---|
| 1 cubic inch | 16.387064 mL |
| 1 cubic foot | 28.316846592 L |
| 1 cubic yard | 0.764554857984 m3 |
| 1 cubic mile | 4168181825.44058 m3 |
| 1 acre-inch | 102.790153129 m3 |
| 1 acre-foot based on the international foot | 1233.48183754752 m3 |
Linear conversion factors must be cubed when converting volume. Because one foot equals 12 inches, one cubic foot equals 123, or 1728, cubic inches. Multiplying a linear conversion factor only once is a common volume-conversion error.
| Unit | Definition or Equivalent Volume | Common Context |
|---|---|---|
| Petroleum barrel | 42 U.S. gallons = 158.987294928 L | Crude oil and petroleum products |
| Hundred cubic feet | 100 ft3 = 2.8316846592 m3 | Natural gas and utility measurement |
| Register ton | 100 ft3 = 2.8316846592 m3 | Ship internal volume, not mass |
| Cord | 128 ft3 = 3.624556363776 m3 | Stacked firewood volume |
| Board foot | 144 in3 = 2.359737216 L | Lumber volume |
| Stere | 1 m3 | Historical metric measure for stacked wood |
Depending on the selected menu, the converter may include the following unit families:
| Unit Name | Why It Needs Context |
|---|---|
| Gallon, quart, pint, and fluid ounce | U.S. and Imperial definitions are different. U.S. dry and liquid measures may also differ. |
| Cup | A U.S. customary cup, rounded U.S. nutrition or recipe cup, metric cup, and Imperial cup are not identical. |
| Tablespoon and teaspoon | Definitions vary by measurement system and culinary convention. |
| Drop | A drop is not a universal fixed volume. It depends on the liquid, opening, device, and applicable standard. |
| Barrel | Petroleum, liquid, dry commodity, and historical barrels can use different capacities. |
| Hogshead and tun | Historical and commodity-specific definitions vary. |
| Biblical and ancient measures | Modern equivalents are scholarly estimates rather than universally fixed standards. |
| Earth volume | This is an approximate scientific reference quantity, not a standardized measurement unit. |
For any ambiguous unit, use the exact definition stated by the source document, recipe, regulation, instrument, or supplier. A converter can calculate results only for the definition selected in its unit database.
Convert 2.5 U.S. gallons to liters:
2.5 × 3.785411784 = 9.46352946 L
Convert 1.2 ft3 to liters:
1.2 × 28.316846592 = 33.9802159104 L
Convert 750 mL to U.S. fluid ounces:
750 / 29.5735295625 = 25.3605 U.S. fl oz
Convert 3.4 L to cubic centimeters:
3.4 × 1000 = 3400 cm3
A conversion factor may be exact while the measured input is not. The converted result should not imply more measurement precision than the original value supports. Keep extra digits during the calculation, then round the final result to an appropriate number of significant digits.
For example, if a measured volume is reported as 2.5 gallons, presenting the result as 9.463529460 liters may suggest unrealistic precision. A practical result may be 9.5 L or 9.46 L, depending on the measurement uncertainty and intended use.
The SI unit of volume is the cubic meter, m3.
The liter is a non-SI unit accepted for use with SI. One liter equals one cubic decimeter or 0.001 cubic meter.
Yes. Both equal 0.000001 m3.
No. A U.S. gallon is 3.785411784 L, while an Imperial gallon is 4.54609 L.
No. A U.S. fluid ounce is approximately 29.57353 mL, while an Imperial fluid ounce is approximately 28.41306 mL.
No. A fluid ounce measures volume. An ounce without the word fluid commonly refers to mass or weight, depending on context.
One cubic meter equals exactly 1000 liters.
They may be using different definitions, such as the U.S. customary cup, a rounded recipe cup, a metric cup, or an Imperial cup. Check the unit label and definition before comparing results.
Not without knowing the material's density and the relevant temperature and other conditions. Volume and mass describe different physical quantities.