Convert Gallons to Cubic Yards Instantly
Use this Gallons to Cubic Yards converter to change U.S. liquid gallons into cubic yards (yd³) instantly. Enter any positive decimal or whole-number volume, see the exact formula, reverse cubic yards back to gallons, compare Imperial gallons, or use the multi-unit volume converter for gallons, cubic feet and liters.
Choose a conversion mode below. Results update only when you press the same full-width Calculate button style used throughout this converter site.
Enter U.S. liquid gallons to calculate cubic yards, cubic feet and liters.
Use U.S. liquid gallons, not Imperial gallons.
Reverse the conversion and find how many U.S. liquid gallons are in a cubic-yard volume.
1 yd³ contains about 201.974 U.S. gallons.
Convert UK/Imperial gallons to cubic yards without confusing them with the smaller U.S. liquid gallon.
1 Imperial gallon = 4.54609 liters.
Start with U.S. gallons, Imperial gallons, cubic yards, cubic feet or liters and see all major equivalents together.
To convert gallons to cubic yards, first identify which gallon standard you are using. In the United States, an unqualified gallon usually means the U.S. liquid gallon. For that unit, multiply the number of gallons by approximately 0.0049511317 to get cubic yards.
Equivalent reverse formula: U.S. gallons = cubic yards × 201.974025974.
For example, 100 U.S. gallons × 0.004951131687 = 0.4951131687 cubic yards. The same 100 gallons also equals about 13.3681 cubic feet and 378.541 liters.
Enter whole numbers or decimals for tanks, water storage, landscaping and material-volume estimates.
See yd³ immediately, which is useful when material suppliers or project estimates are quoted by the cubic yard.
Convert cubic yards back to gallons without manually dividing by the gallon-to-yard factor.
Calculator panels, cards, FAQs and tables adapt to smaller screens with horizontal table scrolling where needed.
The conversion can also be understood through cubic feet. One U.S. liquid gallon occupies exactly 231 cubic inches, and one cubic foot contains about 7.48052 U.S. gallons. Since one cubic yard contains 27 cubic feet, one cubic yard holds about 201.974 U.S. gallons.
NIST publishes exact and high-precision conversion factors for U.S. customary and SI units in its Guide to the SI conversion-factor tables. The U.S. gallon is listed as approximately 3.785412 × 10−3 cubic meter, while the Imperial gallon is 4.54609 × 10−3 cubic meter.
This quick chart uses U.S. liquid gallons. The table stays inside the responsive table wrapper, so on a narrow phone screen users can scroll horizontally without breaking the page layout.
| U.S. Gallons | Cubic Yards (yd³) | Cubic Feet (ft³) | Liters (L) |
|---|---|---|---|
| 1 gal | 0.004951 yd³ | 0.133681 ft³ | 3.785412 L |
| 5 gal | 0.024756 yd³ | 0.668403 ft³ | 18.927059 L |
| 10 gal | 0.049511 yd³ | 1.336806 ft³ | 37.854118 L |
| 25 gal | 0.123778 yd³ | 3.342014 ft³ | 94.635295 L |
| 50 gal | 0.247557 yd³ | 6.684028 ft³ | 189.270589 L |
| 55 gal | 0.272312 yd³ | 7.352431 ft³ | 208.197648 L |
| 100 gal | 0.495113 yd³ | 13.368056 ft³ | 378.541178 L |
| 250 gal | 1.237783 yd³ | 33.420139 ft³ | 946.352946 L |
| 500 gal | 2.475566 yd³ | 66.840278 ft³ | 1,892.705892 L |
| 1,000 gal | 4.951132 yd³ | 133.680556 ft³ | 3,785.411784 L |
Confirm whether the source uses U.S. liquid gallons or Imperial gallons.
Type the gallon amount as a whole number or decimal.
For U.S. gallons, multiply by 0.004951131687.
Keep enough decimals for the precision your project actually needs.
Compare cubic feet or liters when verifying tank or project specifications.
Multiply 50 by 0.004951131687. The result is approximately 0.2475566 yd³. For a quick planning figure, this may be rounded to 0.248 cubic yard.
100 × 0.004951131687 = 0.4951132 yd³. This is just under half a cubic yard.
250 × 0.004951131687 = 1.2377829 yd³. In cubic feet, the same volume is about 33.4201 ft³.
1,000 U.S. gallons converts to approximately 4.9511317 cubic yards. Large water tanks and storage volumes often produce more useful numbers when converted to cubic yards or cubic meters rather than gallons alone.
A cubic yard is the volume of a cube measuring one yard long, one yard wide and one yard high. Since a yard is 3 feet, the cube contains 3 × 3 × 3 = 27 cubic feet. A U.S. liquid gallon occupies 231 cubic inches, while one cubic foot contains 1,728 cubic inches. That gives approximately 7.480519 gallons per cubic foot.
Therefore, dividing gallons by about 201.974026 gives cubic yards.
This relationship is particularly useful when construction, landscaping or bulk-material quantities are expressed in cubic yards but source volumes are recorded in gallons.
One cubic yard contains 27 cubic feet and approximately 201.974 U.S. liquid gallons.
The standard U.S. liquid gallon is smaller than the Imperial gallon. It equals exactly 231 cubic inches and is commonly used for fuel, water, beverages and liquid capacity in the United States.
1 U.S. gal ≈ 0.00495113 yd³
The Imperial gallon is defined as exactly 4.54609 liters and is larger than a U.S. liquid gallon. It appears in UK and some Commonwealth contexts, especially older records and fuel-economy discussions.
1 Imp gal ≈ 0.00594606 yd³
Do not mix the two gallon standards. Using the U.S. factor on an Imperial-gallon quantity will understate the resulting volume. Use the dedicated Imperial calculator panel whenever the original source specifically says “Imperial gallon,” “UK gallon,” or “Imp gal.”
Tank capacities are often labeled in gallons, while excavation, containment, fill and surrounding-space calculations may use cubic yards. Converting the tank volume helps compare liquid capacity with the physical volume available at a site.
For example, a nominal 500-gallon tank contains a liquid volume of about 2.4756 cubic yards when full. The tank’s actual exterior space requirement will be larger because the tank has walls, structural features, freeboard or air space, fittings and possibly a non-rectangular shape. A gallon-to-cubic-yard conversion therefore describes liquid capacity, not necessarily the outside dimensions of the tank.
For related calculations you can also use a Gallons to Cubic Feet converter, Cubic Feet to Cubic Yards converter or Liters to Gallons converter.
Cubic yards are a common bulk-volume unit for soil, mulch, gravel, concrete and excavated material. Gallons, by contrast, are commonly used for liquids. A direct conversion is useful when a project combines both types of measurements—for example, estimating the capacity of a water-holding feature, checking a large mixing tank, or comparing a liquid storage volume with an excavation volume.
Remember that converting volume units does not convert between different materials by weight. One cubic yard of water, soil and gravel are all the same geometric volume, but they do not have the same mass. If your project needs weight, density or material quantity, use the appropriate material calculator after converting the volume.
The reverse conversion is straightforward. Multiply cubic yards by approximately 201.974025974 to obtain U.S. liquid gallons.
Example: 2 yd³ × 201.974025974 ≈ 403.948052 gallons.
If you instead need Imperial gallons, multiply cubic yards by approximately 168.178557394. The calculators above handle both standards automatically.
Continue with natural related conversions such as Cubic Yards to Gallons, Gallons to Cubic Feet, Cubic Feet to Gallons, Liters to Cubic Yards, Cubic Yards to Liters and the Volume Converter. These internal links help users move between liquid-capacity and cubic-volume units without manually chaining formulas.
Conversion factors on this page are based on established U.S. customary, Imperial and SI relationships. For authoritative reference material, see:
Quick answers about gallon-to-cubic-yard formulas, common volumes, U.S. vs Imperial gallons and reverse conversion.