# Convert square feet to square meters

Converts square feet (ft²) to square meters (m²) and back, with the exact unit definitions.

- Page: https://www.acalculator.org/convert/square-feet-to-square-meters
- JSON spec: https://www.acalculator.org/convert/square-feet-to-square-meters.json
- Version: 8d8190995d5b

## Default answer

Example with the default inputs (Square feet (ft²) 1): 1 ft² = 0.092903 m².

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| value | Square feet (ft²) | The amount in square feet to convert. |
| result | Square meters (m²) | The same amount in square meters. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| value | Square feet (ft²) | The amount in square feet to convert. |
| result | Square meters (m²) | The amount in square meters. |

## Method

m² = ft² × 0.09290304

## Assumptions

- 1 square foot = 0.09290304 square meters, from the exact definitions in NIST SP 811.
- Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up; an answer of 1 billion or more shows at most 15 significant digits.

## Worked examples

1. value = 1 gives result = 0.092903. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
2. value = 1,000 gives result = 92.90304. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
3. result = 92.90304 gives value = 1,000. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.

## FAQ

### How many square meters are in a square foot?

1 square foot is 0.092903 square meters, from the exact unit definitions (NIST SP 811).

### How do I convert square feet to square meters?

Multiply by 0.092903: m² = ft² × 0.09290304. For example, 1 ft² × 0.092903 = 0.092903 m².

### How do I convert square meters back to square feet?

Multiply by 10.76391, or type the square meters into the second box and the converter works it out. 1 square meter is 10.76391 square feet.

### What is 1,000 square feet in square meters?

92.90304 m²: 1,000 × 0.09290304.

### Why is a square foot 0.09290304 m²?

A foot is 0.3048 m exactly, so a square foot is 0.3048 × 0.3048 = 0.09290304 m² (NIST SP 811).

## Sources

- NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B.8: Factors for Units Listed Alphabetically (bold factors are exact), retrieved 2026-10-18. https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8