Cubic Inches to Cubic Centimeters Converter
1 cubic inch is exactly 16.387064 cubic centimeters. To convert cubic inches to cubic centimeters, multiply by 16.387064.
Sources: NIST SP 811, NIST Handbook 44, BIPM SI Brochure Updated
Result
1 in³ = 16.3871 cm³
How to convert cubic inches to cubic centimeters
cubic centimeters = cubic inches × 16.387064
1 cubic inch is exactly 16.387064 cubic centimeters (2.54³). 1 cubic centimeter is exactly 1 milliliter.
The factor 16.387064 is exact, not a rounded value. Nothing is rounded until you choose how many decimals to show.
Worked example: 350 in³
- Start with the value in cubic inches: 350 in³.
- Multiply by 16.387064, because 1 cubic inch = 16.387064 cubic centimeters: 350 × 16.387064 = 5,735.4724 cm³.
- Round to the precision you need: 5,735.47 cm³ to two decimals.
Cubic Inches and cubic centimeters side by side
Cubic Inches to cubic centimeters chart
Cubic inches from 1 to 100 converted to cubic centimeters with the exact factor, shown to five significant digits.
| in³ | cm³ |
|---|---|
| 1 | 16.387 |
| 2 | 32.774 |
| 3 | 49.161 |
| 4 | 65.548 |
| 5 | 81.935 |
| 6 | 98.322 |
| 7 | 114.71 |
| 8 | 131.1 |
| 9 | 147.48 |
| 10 | 163.87 |
| 11 | 180.26 |
| 12 | 196.64 |
| 13 | 213.03 |
| 14 | 229.42 |
| 15 | 245.81 |
| 16 | 262.19 |
| 17 | 278.58 |
| 18 | 294.97 |
| 19 | 311.35 |
| 20 | 327.74 |
| 21 | 344.13 |
| 22 | 360.52 |
| 23 | 376.9 |
| 24 | 393.29 |
| 25 | 409.68 |
| in³ | cm³ |
|---|---|
| 26 | 426.06 |
| 27 | 442.45 |
| 28 | 458.84 |
| 29 | 475.22 |
| 30 | 491.61 |
| 31 | 508 |
| 32 | 524.39 |
| 33 | 540.77 |
| 34 | 557.16 |
| 35 | 573.55 |
| 36 | 589.93 |
| 37 | 606.32 |
| 38 | 622.71 |
| 39 | 639.1 |
| 40 | 655.48 |
| 41 | 671.87 |
| 42 | 688.26 |
| 43 | 704.64 |
| 44 | 721.03 |
| 45 | 737.42 |
| 46 | 753.8 |
| 47 | 770.19 |
| 48 | 786.58 |
| 49 | 802.97 |
| 50 | 819.35 |
| in³ | cm³ |
|---|---|
| 51 | 835.74 |
| 52 | 852.13 |
| 53 | 868.51 |
| 54 | 884.9 |
| 55 | 901.29 |
| 56 | 917.68 |
| 57 | 934.06 |
| 58 | 950.45 |
| 59 | 966.84 |
| 60 | 983.22 |
| 61 | 999.61 |
| 62 | 1,016 |
| 63 | 1,032.4 |
| 64 | 1,048.8 |
| 65 | 1,065.2 |
| 66 | 1,081.5 |
| 67 | 1,097.9 |
| 68 | 1,114.3 |
| 69 | 1,130.7 |
| 70 | 1,147.1 |
| 71 | 1,163.5 |
| 72 | 1,179.9 |
| 73 | 1,196.3 |
| 74 | 1,212.6 |
| 75 | 1,229 |
| in³ | cm³ |
|---|---|
| 76 | 1,245.4 |
| 77 | 1,261.8 |
| 78 | 1,278.2 |
| 79 | 1,294.6 |
| 80 | 1,311 |
| 81 | 1,327.4 |
| 82 | 1,343.7 |
| 83 | 1,360.1 |
| 84 | 1,376.5 |
| 85 | 1,392.9 |
| 86 | 1,409.3 |
| 87 | 1,425.7 |
| 88 | 1,442.1 |
| 89 | 1,458.4 |
| 90 | 1,474.8 |
| 91 | 1,491.2 |
| 92 | 1,507.6 |
| 93 | 1,524 |
| 94 | 1,540.4 |
| 95 | 1,556.8 |
| 96 | 1,573.2 |
| 97 | 1,589.5 |
| 98 | 1,605.9 |
| 99 | 1,622.3 |
| 100 | 1,638.7 |
cubic centimeters = cubic inches × 16.387064. Factors: NIST SP 811, NIST Handbook 44, BIPM SI Brochure. unitcheck.net/volume/cubic-inches-to-cubic-centimeters/
Engine sizes
Engine displacement is the usual reason for this conversion: older American engines are named in cubic inches, modern ones in cubic centimeters or liters. 350 in³ is 5,735 cm³, or 5.74 L.
Frequently asked questions
How many cubic centimeters are in 1 cubic inch?
1 cubic inch is exactly 16.387064 cubic centimeters. 1 cubic centimeter is exactly 1 milliliter.
How do I convert cubic inches to cubic centimeters?
Multiply by 16.387064: cubic centimeters = cubic inches × 16.387064. For example, 350 in³ = 5,735.47 cm³.
How many cubic inches are in 1 cubic centimeter?
1 cubic centimeter is about 0.0610237 cubic inches. Press Swap on the converter to go the other way.
Is the in³ to cm³ conversion exact?
Yes. 1 cubic centimeter is exactly 1 milliliter. The factor 16.387064 follows from the definitions, so the only rounding is in the number of decimals you display.
Sources
- NIST Special Publication 811, Guide for the Use of the International System of Units, Appendix B.8: Factors for Units Listed Alphabetically — exact factors are printed in bold in the NIST table (checked October 12, 2026)
- NIST Handbook 44 (2026), Appendix C: General Tables of Units of Measurement — US customary units and their exact relationships (checked October 12, 2026)
- BIPM, The International System of Units (SI Brochure), 9th edition — defines the SI units, the prefixes and the units accepted for use with the SI