# square metre

> SI unit of area

**Wikidata**: [Q25343](https://www.wikidata.org/wiki/Q25343)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Square_metre)  
**Source**: https://4ort.xyz/entity/square-metre


## References

1. SI Brochure (9th edition)
2. Freebase Data Dumps. 2013
3. ISO 80000-3:2006 Quantities and units — Part 3: Space and time
4. Recommendation N. 20 - Codes for Units of Measure Used in International Trade - Revision 13 (Annexes I to III)
5. FactGrid