Convert Square Foot to Rai (ft² → rai)
The square foot is the standard unit for American and British residential and commercial real estate listings.
Square Foot to Rai Conversion Table
10 common values| Square Foot | Rai |
|---|---|
| 1 ft² | 0.00005806 rai |
| 5 ft² | 0.00029 rai |
| 10 ft² | 0.000581 rai |
| 50 ft² | 0.002903 rai |
| 100 ft² | 0.005806 rai |
| 500 ft² | 0.029032 rai |
| 1,000 ft² | 0.058064 rai |
| 5,000 ft² | 0.290322 rai |
| 10,000 ft² | 0.580644 rai |
| 50,000 ft² | 2.90322 rai |
How to Convert Square Foot to Rai Manually
Step by StepConverting square feet to rais is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.
- 1Take your value in square feetStart with the number of square feet (ft²) you want to convert.
- 2Multiply by 0.00005806The conversion factor from ft² to rai is 0.00005806. Multiply your value by this number.
- 3Read the result in raisThe result is your value in rais (rai).
Formula
Multiply the value in square feet by 0.00005806. For the reverse direction, multiply by 17,222.257.
rai = ft² × 0.00005806ft² = rai × 17,222.257Tips
Use these in everyday conversions- 1 ft² ≈ 0.0929 m². To convert m² to ft², multiply by 10.76.
- For quick mental estimates: 100 ft² ≈ 10 m² (exact: 9.29 m²).
- Commercial leases quote annual rate per ft² — confirm inclusive or per-year.
Common Mistakes
Avoid these- Reading a UK property listing's "sq ft" as UK imperial square feet — they are identical to US.
- Treating 1 ft² as just over 1 m² — actually ten times smaller.
- Using ft² and ft interchangeably — one is area, the other length.
About Square Foot and Rai
What is the Square Foot?
The square foot equals exactly 0.09290304 square meters and is the standard unit for American and British residential and commercial real estate. US apartments are advertised by total square footage (a typical 2-bedroom apartment is 800–1,200 ft²), and home-improvement projects (flooring, paint coverage, drywall) use square feet for material calculations. Commercial leases quote rates in dollars per ft² per year. The square foot is intuitive for human-scale spaces — a typical office cubicle is about 64 ft² (8 ft × 8 ft). It relates to the square meter (1 ft² ≈ 0.0929 m²), the square yard (9 ft² = 1 yd²), the square inch (144 in² = 1 ft²), and the acre (43,560 ft² = 1 acre). Outside the US and UK, square meters dominate; within them, the square foot is the everyday property unit.
- US home interior floor areas
- US commercial office lease pricing
- Retail space in US shopping malls
A US suburban home is 1500–2500 ft². Manhattan office rents $60–120 per ft²/year. A small studio apartment is 400 ft².
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
A small Thai farm might be 10–20 rai (1.6–3.2 ha). Thai rice yields: 400–600 kg per rai.