Convert Square Decimeters to Rai
Convert Square Decimeters (dm²) to Rai (rai) instantly and accurately.
Conversion Formula
rai = dm² × 6.250000000e-6
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.
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.
Quick Reference Table
| Square Decimeters (dm²) | Rai (rai) |
|---|---|
| 1 dm² | 6.25 × 10-6 rai |
| 2 dm² | 1.25 × 10-5 rai |
| 5 dm² | 3.125 × 10-5 rai |
| 10 dm² | 6.25 × 10-5 rai |
| 25 dm² | 0.00015625 rai |
| 50 dm² | 0.0003125 rai |
| 100 dm² | 0.000625 rai |