# Rai

/ˈɹɑi/ (US) · CEFR C2 · Noun

Source: https://englishreference.com/word/rai
Updated: 2026-08-15

## Definition

a unit of area used in Thailand for measuring land. One rai is equal to 1,600 square metres.

For teachers: a Thai unit of area measurement equivalent to 1,600 square metres, 0.16 hectares, or approximately 0.395 acres.

## Examples

- The farmer owns ten rai of rice fields.
- When purchasing property in rural Thailand, the land size is almost always quoted in rai rather than hectares or acres.
- The developer subdivided the large estate into several smaller plots, each measuring exactly one rai, to accommodate the construction of luxury villas with private gardens.

## Usage notes

- Commonly used in Thailand; often remains untranslated in English-language real estate and agricultural contexts.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.