Convert US gallons to Cubic yards
1 US gallon is 0.004951 yd³. One US gallon is exactly 0.00495113168724 cubic yards.
One US gallon is 0.0049511317 cubic yards. To convert US gallons to cubic yards, multiply by 0.0049511317; to go the other way, divide by 0.0049511317 or multiply by 201.97403. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Handbook 130. Exactly 231 cubic inches.
Factor checked against the defining standard · How we check
- US gallons × 0.0049511317
1 * 0.00495110.005 yd³
1 US gallon in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 768 tsp | × 768 |
| US tablespoons | 256 tbsp | × 256 |
| US fluid ounces | 128 fl oz | × 128 |
| US cups | 16 cup | × 16 |
| US pints | 8 pt | × 8 |
| US quarts | 4 qt | × 4 |
| US gallons (as entered) | 1 gal | — |
| milliliters | 3,785.411784 ml | × 3,785.411784 |
| liters | 3.785411784 L | × 3.785411784 |
| imperial gallons | 0.8326741846 gal (UK) | × 0.832674184629 |
| imperial quarts | 3.330696739 qt (UK) | × 3.33069673852 |
| imperial pints | 6.661393477 pt (UK) | × 6.66139347703 |
| imperial fluid ounces | 133.2278695 fl oz (UK) | × 133.227869541 |
| imperial gills | 26.64557391 gi (UK) | × 26.6455739081 |
| cubic millimetres | 3,785,411.784 mm³ | × 3,785,411.784 |
| cubic centimetres | 3,785.411784 cm³ | × 3,785.411784 |
| cubic inches | 231 in³ | × 231 |
| cubic feet | 0.1336805556 ft³ | × 0.133680555556 |
| cubic yards | 0.004951131687 yd³ | × 0.00495113168724 |
| cubic metres | 0.003785411784 m³ | × 0.003785411784 |
Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert US gallons to cubic yards? The converter and the working
- 1.Take the measurement in US gallons.
- 2.Multiply by 0.0049511317 — that is how many cubic yards fit in one US gallon.
- 3.To go back the other way, divide by 0.0049511317, or multiply by 201.97403.
Worked example: 25 US gallons to cubic yards
- Formula
- gal × 0.0049511317 = yd³
- Arithmetic
- 25 × 0.0049511317 = 0.12 yd³
- Answer
- 25 gal = 0.12 yd³
The factor is rounded for display; the figure above is computed from the full value.
US gallons to cubic yards conversion table
| US gallons | Cubic yards |
|---|---|
| 1 gal | 0.004951 yd³ |
| 2 gal | 0.01 yd³ |
| 3 gal | 0.01 yd³ |
| 4 gal | 0.02 yd³ |
| 5 gal | 0.02 yd³ |
| 6 gal | 0.03 yd³ |
| 7 gal | 0.03 yd³ |
| 8 gal | 0.04 yd³ |
| 9 gal | 0.04 yd³ |
| 10 gal | 0.05 yd³ |
| 12 gal | 0.06 yd³ |
| 15 gal | 0.07 yd³ |
| 20 gal | 0.1 yd³ |
| 25 gal | 0.12 yd³ |
| 50 gal | 0.25 yd³ |
| 100 gal | 0.5 yd³ |
| 200 gal | 0.99 yd³ |
| 300 gal | 1.49 yd³ |
| 500 gal | 2.48 yd³ |
| 1000 gal | 4.95 yd³ |
| 2000 gal | 9.9 yd³ |
| 5000 gal | 24.76 yd³ |
| 10000 gal | 49.51 yd³ |
What is a US gallon?
Exactly 231 cubic inches. The imperial gallon is 4.546 liters, so US and UK fuel economy figures are not comparable.
What is a cubic yard?
Twenty-seven cubic feet, or 764.55 litres. Concrete, topsoil and aggregate are all ordered by it in the US, and it is the unit a truck is measured in.
How many cubic yards are in a US gallon?
One US gallon is 0.0049511317 cubic yards. Going the other way, one cubic yard is 201.97403 US gallons. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every volume unit here
The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a US gallon.
Cite this page
- APA
- Rule Calculator. (2026). Convert US gallons to cubic yards. Rule Calculator. https://rulecalculators.com/convert/gallon-to-cubic-yard
- MLA
- "Convert US gallons to cubic yards." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/gallon-to-cubic-yard.
- Chicago
- Rule Calculator. "Convert US gallons to cubic yards." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/gallon-to-cubic-yard.
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Questions people actually ask
- How many cubic yards are in a US gallon?
- 0.0049511317. Twenty-seven cubic feet, or 764.55 litres. Concrete, topsoil and aggregate are all ordered by it in the US, and it is the unit a truck is measured in.
- How do I convert cubic yards back to US gallons?
- Divide by 0.0049511317, or multiply by 201.97403 — they are the same operation.
Other volume conversions
Cubic yards to US gallons — the same conversion the other way.