Convert Rai to Bighas

Convert Rai (rai) to Bighas (bigha) instantly and accurately.

Conversion Formula

bigha = rai × 0.6325897766

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 Bighas

A bigha is a traditional South Asian land area unit used across India, Nepal, and Bangladesh, with its size varying significantly by region. The standardised pucca bigha (common in Uttar Pradesh and Bihar) equals 3,025 square yards (approximately 2,529 m²). In West Bengal it is approximately 1,337 m², in Rajasthan around 1,618 m², and in Nepal over 6,773 m². Despite metrification, bigha remains the dominant land measurement in rural India. When dealing with legal or property matters, always verify the local definition, as regional variants differ substantially.

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