Convert US tablespoons to Cubic inches
1 US tablespoon is 0.9 in³. One US tablespoon is exactly 0.90234375 cubic inches.
One US tablespoon is 0.90234375 cubic inches. To convert US tablespoons to cubic inches, multiply by 0.90234375; to go the other way, divide by 0.90234375 or multiply by 1.1082251. The factor is exact rather than rounded: it follows from NIST Handbook 130. Three teaspoons, about 14.79 ml.
Factor checked against the defining standard · How we check
- US tablespoons × 0.90234375
1 * 0.90234380.902 in³
1 US tablespoon in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 3 tsp | × 3 |
| US tablespoons (as entered) | 1 tbsp | — |
| US fluid ounces | 0.5 fl oz | × 0.5 |
| US cups | 0.0625 cup | × 0.0625 |
| US pints | 0.03125 pt | × 0.03125 |
| US quarts | 0.015625 qt | × 0.015625 |
| US gallons | 0.00390625 gal | × 0.00390625 |
| milliliters | 14.78676478 ml | × 14.7867647812 |
| liters | 0.01478676478 L | × 0.0147867647812 |
| imperial gallons | 0.003252633534 gal (UK) | × 0.00325263353371 |
| imperial quarts | 0.01301053413 qt (UK) | × 0.0130105341348 |
| imperial pints | 0.02602106827 pt (UK) | × 0.0260210682697 |
| imperial fluid ounces | 0.5204213654 fl oz (UK) | × 0.520421365393 |
| imperial gills | 0.1040842731 gi (UK) | × 0.104084273079 |
| cubic millimetres | 14,786.76478 mm³ | × 14,786.7647812 |
| cubic centimetres | 14.78676478 cm³ | × 14.7867647812 |
| cubic inches | 0.90234375 in³ | × 0.90234375 |
| cubic feet | 0.0005221896701 ft³ | × 0.000522189670139 |
| cubic yards | 0.00001934035815 yd³ | × 0.0000193403581533 |
| cubic metres | 0.00001478676478 m³ | × 0.0000147867647812 |
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 tablespoons to cubic inches? The converter and the working
- 1.Take the measurement in US tablespoons.
- 2.Multiply by 0.90234375 — that is how many cubic inches fit in one US tablespoon.
- 3.To go back the other way, divide by 0.90234375, or multiply by 1.1082251.
Worked example: 25 US tablespoons to cubic inches
- Formula
- tbsp × 0.90234375 = in³
- Arithmetic
- 25 × 0.90234375 = 22.56 in³
- Answer
- 25 tbsp = 22.56 in³
The factor is exact, so this figure is exact too — only the display is rounded.
US tablespoons to cubic inches conversion table
| US tablespoons | Cubic inches |
|---|---|
| 1 tbsp | 0.9 in³ |
| 2 tbsp | 1.8 in³ |
| 3 tbsp | 2.71 in³ |
| 4 tbsp | 3.61 in³ |
| 5 tbsp | 4.51 in³ |
| 6 tbsp | 5.41 in³ |
| 7 tbsp | 6.32 in³ |
| 8 tbsp | 7.22 in³ |
| 9 tbsp | 8.12 in³ |
| 10 tbsp | 9.02 in³ |
| 12 tbsp | 10.83 in³ |
| 15 tbsp | 13.54 in³ |
| 20 tbsp | 18.05 in³ |
| 25 tbsp | 22.56 in³ |
| 50 tbsp | 45.12 in³ |
| 100 tbsp | 90.23 in³ |
| 200 tbsp | 180.47 in³ |
| 300 tbsp | 270.7 in³ |
| 500 tbsp | 451.17 in³ |
| 1000 tbsp | 902.34 in³ |
| 2000 tbsp | 1,804.69 in³ |
| 5000 tbsp | 4,511.72 in³ |
| 10000 tbsp | 9,023.44 in³ |
What is a US tablespoon?
Three teaspoons, about 14.79 ml. Australia is the outlier at four teaspoons to the tablespoon.
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 tablespoon?
One US tablespoon is 0.90234375 cubic inches, exactly. Going the other way, one cubic inch is 1.1082251 US tablespoons. 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 tablespoon.
Cite this page
- APA
- Rule Calculator. (2026). Convert US tablespoons to cubic inches. Rule Calculator. https://rulecalculators.com/convert/tablespoon-to-cubic-inch
- MLA
- "Convert US tablespoons to cubic inches." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/tablespoon-to-cubic-inch.
- Chicago
- Rule Calculator. "Convert US tablespoons to cubic inches." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/tablespoon-to-cubic-inch.
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Questions people actually ask
- How many cubic inches are in a US tablespoon?
- 0.90234375. 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 tablespoons?
- Divide by 0.90234375, or multiply by 1.1082251 — they are the same operation.
Other volume conversions
Cubic inches to US tablespoons — the same conversion the other way.