Convert US cups to Cubic yards
1 US cup is 0.0003094 yd³. One US cup is exactly 0.000309445730453 cubic yards.
One US cup is 3.0945 × 10^-4 cubic yards. To convert US cups to cubic yards, multiply by 3.0945 × 10^-4; to go the other way, divide by 3.0945 × 10^-4 or multiply by 3231.5844. 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. Eight US fluid ounces, about 236.6 ml.
Factor checked against the defining standard · How we check
- US cups × 3.0945 × 10^-4
1 * 0.00030940 yd³
1 US cup in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 48 tsp | × 48 |
| US tablespoons | 16 tbsp | × 16 |
| US fluid ounces | 8 fl oz | × 8 |
| US cups (as entered) | 1 cup | — |
| US pints | 0.5 pt | × 0.5 |
| US quarts | 0.25 qt | × 0.25 |
| US gallons | 0.0625 gal | × 0.0625 |
| milliliters | 236.5882365 ml | × 236.5882365 |
| liters | 0.2365882365 L | × 0.2365882365 |
| imperial gallons | 0.05204213654 gal (UK) | × 0.0520421365393 |
| imperial quarts | 0.2081685462 qt (UK) | × 0.208168546157 |
| imperial pints | 0.4163370923 pt (UK) | × 0.416337092314 |
| imperial fluid ounces | 8.326741846 fl oz (UK) | × 8.32674184629 |
| imperial gills | 1.665348369 gi (UK) | × 1.66534836926 |
| cubic millimetres | 236,588.2365 mm³ | × 236,588.2365 |
| cubic centimetres | 236.5882365 cm³ | × 236.5882365 |
| cubic inches | 14.4375 in³ | × 14.4375 |
| cubic feet | 0.008355034722 ft³ | × 0.00835503472222 |
| cubic yards | 0.0003094457305 yd³ | × 0.000309445730453 |
| cubic metres | 0.0002365882365 m³ | × 0.0002365882365 |
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 cups to cubic yards? The converter and the working
- 1.Take the measurement in US cups.
- 2.Multiply by 3.0945 × 10^-4 — that is how many cubic yards fit in one US cup.
- 3.To go back the other way, divide by 3.0945 × 10^-4, or multiply by 3231.5844.
Worked example: 25 US cups to cubic yards
- Formula
- cup × 3.0945 × 10^-4 = yd³
- Arithmetic
- 25 × 3.0945 × 10^-4 = 0.01 yd³
- Answer
- 25 cup = 0.01 yd³
The factor is rounded for display; the figure above is computed from the full value.
US cups to cubic yards conversion table
| US cups | Cubic yards |
|---|---|
| 1 cup | 0.0003094 yd³ |
| 2 cup | 0.0006189 yd³ |
| 3 cup | 0.0009283 yd³ |
| 4 cup | 0.001238 yd³ |
| 5 cup | 0.001547 yd³ |
| 6 cup | 0.001857 yd³ |
| 7 cup | 0.002166 yd³ |
| 8 cup | 0.002476 yd³ |
| 9 cup | 0.002785 yd³ |
| 10 cup | 0.003094 yd³ |
| 12 cup | 0.003713 yd³ |
| 15 cup | 0.004642 yd³ |
| 20 cup | 0.01 yd³ |
| 25 cup | 0.01 yd³ |
| 50 cup | 0.02 yd³ |
| 100 cup | 0.03 yd³ |
| 200 cup | 0.06 yd³ |
| 300 cup | 0.09 yd³ |
| 500 cup | 0.15 yd³ |
| 1000 cup | 0.31 yd³ |
| 2000 cup | 0.62 yd³ |
| 5000 cup | 1.55 yd³ |
| 10000 cup | 3.09 yd³ |
What is a US cup?
Eight US fluid ounces, about 236.6 ml. The "legal" cup on nutrition labels is a rounded 240 ml.
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 cup?
One US cup is 3.0945 × 10^-4 cubic yards. Going the other way, one cubic yard is 3231.5844 US cups. 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 cup.
Cite this page
- APA
- Rule Calculator. (2026). Convert US cups to cubic yards. Rule Calculator. https://rulecalculators.com/convert/cup-to-cubic-yard
- MLA
- "Convert US cups to cubic yards." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/cup-to-cubic-yard.
- Chicago
- Rule Calculator. "Convert US cups to cubic yards." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/cup-to-cubic-yard.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many cubic yards are in a US cup?
- 3.0945 × 10^-4. 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 cups?
- Divide by 3.0945 × 10^-4, or multiply by 3231.5844 — they are the same operation.
Other volume conversions
Cubic yards to US cups — the same conversion the other way.