# Cubic inches to Cubic centimeters (cc) (in³ to cm³)

> Convert cubic inches to cubic centimeters (cc): 1 in³ = 16.3871 cm³. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

- Page id: `cubic-inches-to-cc` · Quantity: Volume (`volume`, base unit L) · Tool: `convert_units`
- Canonical page: https://tttkmbb.com/conversion/cubic-inches-to-cc · This document: https://tttkmbb.com/conversion/cubic-inches-to-cc.md · JSON: https://tttkmbb.com/conversion/cubic-inches-to-cc.json (add `?value=` for a result)

## Formula

- `1 in³ = 16.3871 cm³`
- `cubic centimeters (cc) = cubic inches × 16.387064`
- Reverse: `cubic inches = cubic centimeters (cc) × 0.06102374409`

The factor follows from the SI definitions of both units (NIST SP 811); values below are rounded to 6 significant figures, the API returns up to 12.

## Worked examples

- 5 in³ = 81.9353 cm³
- 12.5 in³ = 204.838 cm³
- 100 in³ = 1638.71 cm³

## Conversion table

| Cubic inches (in³) | Cubic centimeters (cc) (cm³) |
| --- | --- |
| 1 | 16.3871 |
| 2 | 32.7741 |
| 3 | 49.1612 |
| 4 | 65.5483 |
| 5 | 81.9353 |
| 6 | 98.3224 |
| 7 | 114.709 |
| 8 | 131.097 |
| 9 | 147.484 |
| 10 | 163.871 |
| 15 | 245.806 |
| 20 | 327.741 |
| 25 | 409.677 |
| 30 | 491.612 |
| 40 | 655.483 |
| 50 | 819.353 |
| 75 | 1229.03 |
| 100 | 1638.71 |
| 200 | 3277.41 |
| 250 | 4096.77 |
| 500 | 8193.53 |
| 1000 | 16387.1 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=in3&to_unit=cm3` → unified JSON envelope with `result.values.result`, `formula`, `factor`, `sources`, `freshness`
- MCP: server `https://tttkmbb.com/mcp`, tool `convert_units` with `{"value":5,"from_unit":"in3","to_unit":"cm3"}`
- All volume units: https://tttkmbb.com/api/v1/units?quantity=volume · full converter: [Volume Converter](https://tttkmbb.com/conversion/volume.md)
- Authentication: none. Freshness: `static` (fixed conversion factors).

## FAQ

**How many cubic centimeters (cc) are in one cubic inch?**

1 in³ = 16.3871 cm³. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

**What is the formula to convert cubic inches to cubic centimeters (cc)?**

Multiply the value in cubic inches by 16.387064: cubic centimeters (cc) = cubic inches × 16.387064. For example, 5 in³ = 81.9353 cm³.

**How do I convert cubic centimeters (cc) back to cubic inches?**

Multiply by the inverse factor 0.06102374409 (cubic inches = cubic centimeters (cc) × 0.06102374409), or use the cubic centimeters (cc)-to-cubic inches page.

## Related conversions

- [Cubic centimeters (cc) to cubic inches](https://tttkmbb.com/conversion/cc-to-cubic-inches.md) (reverse)
- [Liters to US gallons](https://tttkmbb.com/conversion/liters-to-gallons.md)
- [US gallons to Liters](https://tttkmbb.com/conversion/gallons-to-liters.md)
- [Milliliters to US fluid ounces](https://tttkmbb.com/conversion/ml-to-fl-oz.md)
- [US fluid ounces to Milliliters](https://tttkmbb.com/conversion/fl-oz-to-ml.md)
- [Liters to Milliliters](https://tttkmbb.com/conversion/liters-to-ml.md)
- [Milliliters to Liters](https://tttkmbb.com/conversion/ml-to-liters.md)
- [US cups to Milliliters](https://tttkmbb.com/conversion/cups-to-ml.md)
- [Milliliters to US cups](https://tttkmbb.com/conversion/ml-to-cups.md)

## Data Sources

- NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors — https://www.nist.gov/pml/special-publication-811 (standard, retrieved 2026-09-24)
- BIPM – The International System of Units (SI Brochure, 9th edition) — https://www.bipm.org/en/publications/si-brochure (standard, retrieved 2026-09-24)
- Wikipedia – Conversion of units — https://en.wikipedia.org/wiki/Conversion_of_units (reference, retrieved 2026-09-24)