# Cubic feet to Cubic meters (ft³ to m³)

> Convert cubic feet to cubic meters: 1 ft³ = 0.0283168 m³. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

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

## Formula

- `1 ft³ = 0.0283168 m³`
- `cubic meters = cubic feet × 0.02831684659`
- Reverse: `cubic feet = cubic meters × 35.31466672`

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 ft³ = 0.141584 m³
- 12.5 ft³ = 0.353961 m³
- 100 ft³ = 2.83168 m³

## Conversion table

| Cubic feet (ft³) | Cubic meters (m³) |
| --- | --- |
| 1 | 0.0283168 |
| 2 | 0.0566337 |
| 3 | 0.0849505 |
| 4 | 0.113267 |
| 5 | 0.141584 |
| 6 | 0.169901 |
| 7 | 0.198218 |
| 8 | 0.226535 |
| 9 | 0.254852 |
| 10 | 0.283168 |
| 15 | 0.424753 |
| 20 | 0.566337 |
| 25 | 0.707921 |
| 30 | 0.849505 |
| 40 | 1.13267 |
| 50 | 1.41584 |
| 75 | 2.12376 |
| 100 | 2.83168 |
| 200 | 5.66337 |
| 250 | 7.07921 |
| 500 | 14.1584 |
| 1000 | 28.3168 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=ft3&to_unit=m3` → 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":"ft3","to_unit":"m3"}`
- 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 meters are in one cubic foot?**

1 ft³ = 0.0283168 m³. 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 feet to cubic meters?**

Multiply the value in cubic feet by 0.02831684659: cubic meters = cubic feet × 0.02831684659. For example, 5 ft³ = 0.141584 m³.

**How do I convert cubic meters back to cubic feet?**

Multiply by the inverse factor 35.31466672 (cubic feet = cubic meters × 35.31466672), or use the cubic meters-to-cubic feet page.

## Related conversions

- [Cubic meters to cubic feet](https://tttkmbb.com/conversion/cubic-meters-to-cubic-feet.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)