Rai (ไร่). Conversion Chart

This converter features contemporary units of area. There is also a special converter for historical units of area you might want to visit for ancient, medieval and other old units that are no longer used.
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1This is a conversion chart for rai (ไร่) (Thai units). To switch the unit simply find the one you want on the page and click it.
You can also go to the universal conversion page.
2Enter the value you want to convert (rai (ไร่)). Then click the Convert Me button.
Your value gets instantly converted to all other units on the page.
3Now find the unit you want and get the conversion result next to it. It's your answer.

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  1. Enter the value of your unit (rai (ไร่)).
  2. Touch "Convert Me" button.
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Your value (rai (ไร่)):
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Metric

Units: square kilometer (km²)  / hectare  / decare  / are (a)  / square meter (m²)  / square decimeter (dm²)  / square centimeter (cm²)  / square millimeter (mm²)  / barn (b)
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British (Imperial) And U.S. System

Units: township  / square mile  / homestead  / acre  / rood  / square rod  / perch  / square yard (yd²)  / square foot (ft²)  / square inch (in²)  / square mil (th²)
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Historical Units Still In Use Today

Some older units managed to survive and are still used nowadays. They were rounded up in accordance to current measurements (either metric or imperial) while keeping their old names. For each of the units below we specify the country where it is in use.
Units: dulum (дулум) of Bosnia and Herzegovina and Serbia  / dynym or dylym of Albania  / donum of Cyprus  / skales (σκάλες) of Cyprus  / stremma (στρέμμα) of Greece  / Turkish stremma of Greece  / dunam of Iraq  / dunam (dönüm, دونم) of Turkey, Syria, Israel, Palestine, Jordan, Lebanon  / old (pre 1928) dunam (dönüm, دونم) of Turkey, Syria, Israel, Palestine, Jordan, Lebanon  / feddan (فدّان‎) of Egypt, Sudan, Syria, Sultanate of Oman  / kirat (قيراط) of Egypt  / manzana of Argentina  / manzana of Belize  / manzana of Costa Rica  / manzana of Guatemala  / manzana of Honduras  / manzana of Nicaragua  / cuadra of Argentina  / cuadra of Chile  / cuadra of Ecuador  / cuadra of Paraguay  / cuadra of Peru  / cuadra of Uruguay  / square vara of Panama and Columbia  / square vara of Chile, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Peru, São Tomé and Principe, Venezuela  / square vara of Cuba  / square vara of Argentina, Paraguay, Uruguay  / square vara of Brazil
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Units for Measuring Wire Gauges

These units are referring to the area of a wire with a circular cross section. One circular mil denote an area, equal to the area of a circle with a diameter of one mil.

You can find a comprehensive list of wire gauge units on our special wire gauge conversion page.

Units: circular inch  / thousand of circular mils (kcmil, MCM)  / circular mil (cmil)
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Japanese

Units: shaku (勺)  / go (合)  / jo (畳)  / tsubo (坪)  / bu (歩)  / se (畝)  / tan (段, 反)  / cho (町, 町歩)
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Chinese units of 1930

Units: qing (頃 or 顷)  / mu (畝 or 亩)  / fen (市分)  / fang zhang (方丈) (zhang²)  / li (釐 or 厘)  / hao (毫)  / fang chi (方尺) (chi²)  / fang cun (方寸) (cun²)
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Chinese units of 1915

Units: qing (頃 or 顷)  / mu (畝 or 亩)  / fen (分)  / fang zhang (方丈) (zhang²)  / li (釐 or 厘)  / hao (毫)  / fang chi (方尺) (chi²)  / fang cun (方寸) (cun²)
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Thai units

Some of these units are still in use even though metric system was formally established in 1923. Before the metrication the old units were standartied to exact metric values.
Units:  / ngan (งาน)  / tarang wah (ตารางวา, square wa)
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Natural units

In physics, natural units are physical units of measurement based only on universal physical constants. The origin of their definition comes only from properties of nature and not from any human construct.
Units: Planck area (L²)

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