Square Feet to Ngan (Thai) (ft² to ngan)

1 square foot equals 0.0002322576 ngan (Thai) exactly.

1 square foot = 0.0002322576 ngan (Thai)

How to convert square feet to ngan (Thai)

To convert square feet to ngan (Thai), multiply the number of square feet by 0.0002322576. This factor is exact. To go the other way, multiply ngan (Thai) by 4,305.564167 (rounded).

ngan (Thai) = square feet × 0.0002322576

Example: 10 square feet = 0.002322576 ngan (Thai).

About these units

Square Foot (ft²)

US & ImperialCurrent unit

Exactly 0.09290304 m². The standard unit for floor areas and real estate in the US, UK and India.

Feet came first, and they were not all the same length. As a body-based unit, the foot ranged historically between about 250 and 335 millimeters, with ancient Greek and Roman feet near 300 mm. In medieval England a statute foot was set at 10/11 of an older Belgic foot, and Charlemagne's attempt around 790 to standardize units largely failed. The square foot is simply that length squared, so its size changed along with the foot.

The 1959 international agreement fixed the foot at exactly 0.3048 meter, so one square foot is exactly 0.09290304 m², or 144 square inches. The United Kingdom adopted the new foot in 1964. Today the square foot is the usual way of listing property in the United States, Canada, the United Kingdom, India, Pakistan, Singapore and Hong Kong, although the measuring convention varies: agents may measure corner to corner, subtract unheated space, or add heated space that extends beyond the end-to-end measurement. The world's smallest park has been reported at 2.6 sq ft.

1 square foot = 0.09290304 square meters (exactly).

Sources: Wikipedia: Square foot; Wikipedia: Foot (unit); NIST Guide to the SI, Appendix B.8: conversion factors

Ngan (Thai) (ngan)

ThaiTraditional unit (still used in some regions)

A quarter of a rai: exactly 400 m². Used for house plots in Thailand.

Ngan means work in Thai, and as a land unit it is the middle step between the rai and the square wa. Four ngan make one rai, and one ngan holds 100 square wa, so it covers 400 square meters, the area of a square 20 meters on a side.

That size suits a village or suburban house plot, which is why ngan crop up in listings for building land, while farms are quoted in rai. Deeds combine the units, so a title might read as a number of rai, then ngan, then square wa.

The ngan comes from the same traditional Thai scheme as the wa and sen, fixed against metric lengths after the cadastral survey of 1896. Its 400 square meters are exact in the modern definition, and it is about one tenth of an acre.

1 ngan (Thai) = 400 square meters (exactly).

Sources: Wikipedia: Rai (unit); Wikipedia: Thai units of measurement

Related conversions

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