Convert US cups to Cubic inches
1 US cup is 14.44 in³. One US cup is exactly 14.4375 cubic inches.
One US cup is 14.4375 cubic inches. To convert US cups to cubic inches, multiply by 14.4375; to go the other way, divide by 14.4375 or multiply by 0.069264069. The factor is exact rather than rounded: 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 × 14.4375
1 * 14.437514.438 in³
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 inches? The converter and the working
- 1.Take the measurement in US cups.
- 2.Multiply by 14.4375 — that is how many cubic inches fit in one US cup.
- 3.To go back the other way, divide by 14.4375, or multiply by 0.069264069.
Worked example: 25 US cups to cubic inches
- Formula
- cup × 14.4375 = in³
- Arithmetic
- 25 × 14.4375 = 360.94 in³
- Answer
- 25 cup = 360.94 in³
The factor is exact, so this figure is exact too — only the display is rounded.
US cups to cubic inches conversion table
| US cups | Cubic inches |
|---|---|
| 1 cup | 14.44 in³ |
| 2 cup | 28.88 in³ |
| 3 cup | 43.31 in³ |
| 4 cup | 57.75 in³ |
| 5 cup | 72.19 in³ |
| 6 cup | 86.63 in³ |
| 7 cup | 101.06 in³ |
| 8 cup | 115.5 in³ |
| 9 cup | 129.94 in³ |
| 10 cup | 144.38 in³ |
| 12 cup | 173.25 in³ |
| 15 cup | 216.56 in³ |
| 20 cup | 288.75 in³ |
| 25 cup | 360.94 in³ |
| 50 cup | 721.88 in³ |
| 100 cup | 1,443.75 in³ |
| 200 cup | 2,887.5 in³ |
| 300 cup | 4,331.25 in³ |
| 500 cup | 7,218.75 in³ |
| 1000 cup | 14,437.5 in³ |
| 2000 cup | 28,875 in³ |
| 5000 cup | 72,187.5 in³ |
| 10000 cup | 144,375 in³ |
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 inch?
Exactly 16.387064 millilitres, since the inch is exactly 25.4 mm. American engine displacement was quoted in it until the 1980s — a 350 small block is 5.7 litres.
How many cubic inches are in a US cup?
One US cup is 14.4375 cubic inches, exactly. Going the other way, one cubic inch is 0.069264069 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 inches. Rule Calculator. https://rulecalculators.com/convert/cup-to-cubic-inch
- MLA
- "Convert US cups to cubic inches." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/cup-to-cubic-inch.
- Chicago
- Rule Calculator. "Convert US cups to cubic inches." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/cup-to-cubic-inch.
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 inches are in a US cup?
- 14.4375. Exactly 16.387064 millilitres, since the inch is exactly 25.4 mm. American engine displacement was quoted in it until the 1980s — a 350 small block is 5.7 litres.
- How do I convert cubic inches back to US cups?
- Divide by 14.4375, or multiply by 0.069264069 — they are the same operation.
Other volume conversions
Cubic inches to US cups — the same conversion the other way.