Ngan

For other uses, see Ngan (disambiguation).

A ngan (Thai: งาน, RTGS: ngan, IPA: [ŋāːn]) is a unit of area, equal to 400 square metres (20 m × 20 m), used for measuring land or property area. Its current size is precisely derived from the metre, but is neither part of nor recognized by the modern metric system, the International System (SI).

The ngan equals 1/4 rai or 100 tarangwa aka square wa, very nearly 1/10 of an acre. Ngan also means work.

It is commonly used in Thailand and equals 4 are, another unit based on the metre and as commonly used in several countries recognized though not encouraged by the SI.

As for many terms normally written in Thai alphabet, transliteration into English language caused a spelling variant, ngaan.

See also

• Thai units of measurement
• 1 E+2 m² for a comparison with other areas

References

• "Units of Measurement". Thailand Guru, a service of Export Quality Services Co., Ltd. http://www.thailandguru.com/infra-time.html#units. Retrieved 15 April 2007.  (which uses the name 'waa' instead of 'dtaaraangwaa' for the 'square waa')
• "Information and advice when buying property in Thailand (Land Sizes)". Baan Thai Property Co. Ltd. http://www.baanthaiproperty.com/info.php. Retrieved 15 April 2007.  (with spelling variant 'data-raang waa' for 'dtaaraangwaa')
• "Thailand Information - Measurement". www.PureThailand.com. http://www.purethailand.com/thailand_information/misc/measurement.htm. Retrieved 15 April 2007.  (with spelling variants 'ngan', 'wah' and 'tara[a]ng wah' for 'ngaan', 'waa' and 'dtaaraangwaa')