Convert Rai to Square Meter (rai → m²)

Converting rais to square meters is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in rais

   Start with the number of rais (rai) you want to convert.
2. 2
   Multiply by 1,600

   The conversion factor from rai to m² is 1,600. Multiply your value by this number.
3. 3
   Read the result in square meters

   The result is your value in square meters (m²).

Multiply the value in rais by 1,600. For the reverse direction, multiply by 0.000625.

• ✓1 rai = 1600 m² = 0.16 ha.
• ✓1 rai = 4 ngan = 400 tarang wa.
• ✓1 hectare = 6.25 rai.

• ✗Assuming rai equals hectare — only 16%.
• ✗Mixing rai with ngan or tarang wa without conversion.
• ✗Using rai outside Thailand — not internationally recognised.

What is the Rai?

The rai equals exactly 1,600 square meters (40 m × 40 m) and is the traditional Thai land unit, still officially used in Thailand for real estate, agriculture, and property records. The rai is divided into 4 ngan (each 400 m²), and 1 ngan equals 100 wa (each 4 m²). Despite Thailand's adoption of the metric system, the rai remains the everyday unit for buying and selling land in Thai contexts — a small urban plot might be 1 rai, while rural farms are quoted in tens or hundreds of rai. The rai relates to the square meter (1 rai = 1,600 m²), the hectare (1 ha = 6.25 rai), and the acre (1 acre ≈ 2.529 rai). The rai's exact metric definition (1,600 m²) makes conversion to SI units precise, unlike many traditional land units.

• Thai rural property and farmland
• Thai real-estate listings
• Agricultural yield reporting in Thailand

What is the Square Meter?

The square meter is the SI unit of area, equal to the area of a square measuring 1 meter on each side. It is the international standard for room sizes (a typical bedroom is 12–20 m²), real estate listings (apartments are sold by total m²), small construction projects, and scientific measurements. Most countries outside the US and UK quote property areas in square meters. The square meter relates to the hectare (1 ha = 10,000 m²), the square kilometer (1 km² = 1,000,000 m²), the square foot (1 m² ≈ 10.764 ft²), and the square yard (1 m² ≈ 1.196 yd²). Window glass, fabric for upholstery, paint coverage, and solar-panel ratings (e.g., 200 W/m² of sunlight) all use square meters. A standard parking space is about 12 m², and a typical European apartment ranges from 50 to 100 m².

• European apartment and home floor areas
• Urban land pricing in metric countries
• Commercial and office-space leasing