Convert Rai to Dunam
Convert Rai (rai) to Dunam (dunam) instantly and accurately.
Conversion Formula
dunam = rai × 1.6
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 Dunam
A dunam (also dönüm or donum) is a unit of land area equal to exactly 1,000 m², used across Turkey, Israel, Palestine, Jordan, Lebanon, Iraq, and former Ottoman Empire territories. One dunam equals one stremma and one decare. The modern metric dunam of 1,000 m² was standardised during the British Mandate period; older Ottoman dunams varied by region (approximately 919-1,600 m²). It remains the primary land measurement unit for agricultural and property records throughout the Middle East, with properties routinely listed in dunams in Israeli and Palestinian real estate.
Quick Reference Table
| Rai (rai) | Dunam (dunam) |
|---|---|
| 1 rai | 1.6 dunam |
| 2 rai | 3.2 dunam |
| 5 rai | 8 dunam |
| 10 rai | 16 dunam |
| 25 rai | 40 dunam |
| 50 rai | 80 dunam |
| 100 rai | 160 dunam |