Convert Rai to Square Decimeters
Convert Rai (rai) to Square Decimeters (dm²) instantly and accurately.
Conversion Formula
dm² = rai × 160000
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 Decimeters
A square decimeter (dm²) is a metric area unit equal to 100 square centimeters (10 cm × 10 cm) or 0.01 square meters. It represents roughly the footprint of a large paperback book or a standard floor tile. While less common in everyday language than cm² or m², square decimeters appear in cooking (pan sizes), packaging design, and as a useful stepping stone in metric calculations - notably, exactly 1 liter of liquid forms a layer 1 dm² × 1 cm deep.
Quick Reference Table
| Rai (rai) | Square Decimeters (dm²) |
|---|---|
| 1 rai | 160000 dm² |
| 2 rai | 320000 dm² |
| 5 rai | 800000 dm² |
| 10 rai | 1600000 dm² |
| 25 rai | 4000000 dm² |
| 50 rai | 8000000 dm² |
| 100 rai | 16000000 dm² |