Convert Hectares to Rai
Convert Hectares (ha) to Rai (rai) instantly and accurately.
Conversion Formula
rai = ha × 6.25
About Hectares
A hectare (ha) is a metric unit of area equal to 10,000 m² (100 m × 100 m). It is the primary unit for measuring agricultural land, forests, and large properties worldwide outside the United States. One hectare equals 2.471 acres. A FIFA-regulation football pitch is about 0.7 ha, and Vatican City is 44 ha. This unit is fundamental in agriculture, forestry, environmental conservation, and international land measurement standards.
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
| Hectares (ha) | Rai (rai) |
|---|---|
| 1 ha | 6.25 rai |
| 2 ha | 12.5 rai |
| 5 ha | 31.25 rai |
| 10 ha | 62.5 rai |
| 25 ha | 156.25 rai |
| 50 ha | 312.5 rai |
| 100 ha | 625 rai |