Convert Rai to Square Furlongs
Convert Rai (rai) to Square Furlongs (fur²) instantly and accurately.
Conversion Formula
fur² = rai × 0.03953686103
About Rai
A rai (ไร่) is the standard Thai unit of land area, defined as exactly 1,600 m² (40 m × 40 m). It is used throughout Thailand for all land measurement - from rice paddies to urban plots and national parks. Thai real estate listings always quote land area in rai, ngan (400 m² = ¼ rai), and talang wah (4 m² = 1 square wah). Thailand's total rice-paddy area is reported in millions of rai. One rai equals approximately 0.395 acres or 0.16 hectares.
About Square Furlongs
A square furlong is an area unit equal to a square with sides of one furlong (220 yards or ~201.17 m), approximately 40,469 m² or exactly 10 acres. The furlong (from Old English 'furrow-long') was historically the standard ploughing distance, and 10 square furlongs equals one acre - a relationship that made traditional land surveying convenient. While square furlongs are rarely used in official modern measurements, they appear in historical land surveys, British horse racing contexts, and as a handy reference for visualising 10-acre blocks.
Quick Reference Table
| Rai (rai) | Square Furlongs (fur²) |
|---|---|
| 1 rai | 0.0395369 fur² |
| 2 rai | 0.0790737 fur² |
| 5 rai | 0.197684 fur² |
| 10 rai | 0.395369 fur² |
| 25 rai | 0.988422 fur² |
| 50 rai | 1.97684 fur² |
| 100 rai | 3.95369 fur² |