Convert Rai to Square Yard (rai → yd²)

Converting rais to square yards 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 1,913.5841

   The conversion factor from rai to yd² is 1,913.5841. Multiply your value by this number.
3. 3
   Read the result in square yards

   The result is your value in square yards (yd²).

Multiply the value in rais by 1,913.5841. For the reverse direction, multiply by 0.000523.

• ✓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 Yard?

The square yard equals exactly 0.83612736 square meters (or 9 square feet) and is used for American and British carpet, fabric, landscaping, and small construction projects. Carpet pricing in the US has historically been per square yard, though many retailers now also quote per square foot. Lawn-fertilizer applications and grass-seed coverage often specify rates per 1,000 yd². The square yard relates to the square foot (9 ft² = 1 yd²), the square meter (1 yd² ≈ 0.836 m²), and the acre (4,840 yd² = 1 acre). Despite the prevalence of square feet in real estate and construction, the square yard remains entrenched in textile and landscaping commerce. A typical bedroom carpet is 12–20 square yards.

• Carpet and flooring orders (US and UK)
• Landscaping turf and sod
• Older UK property descriptions