Buying Property? Here’s What to Know About Land Size in Thailand
Understanding land measurements in Thailand is essential if you’re planning to buy land, build a home, or invest in real estate. Thailand uses a traditional land measurement system that’s different from the international metric system. Instead of square meters or acres, land is measured in Rai, Ngan, and Square Wah. Whether you’re comparing prices or reviewing contracts, learning these units will help you avoid costly mistakes.
Thai Land Units: Rai, Ngan, and Square Wah
- Square Wah (Tarang Wah)
One Square Wah equals 4 square meters. It’s a common unit for small land sized plots like townhouses or shophouses in Thai cities. - Ngan
One Ngan is equal to 100 Square Wah, or 400 m². This is often used for villas, garden homes, and small-scale business land. - Rai
The largest traditional unit: 1 Rai = 1,600 m². Ideal for agricultural land, resort developments, and large residential projects.
Thai Land Measurement System: Conversion to Metric
This table helps convert Thai land units into the standard metric system for easy comparison. This is especially useful for international buyers working with real estate agents or developers.
| Thai Unit | Square Meters | Hectares | Acres | Square Feet |
|---|---|---|---|---|
| 1 Square Wah | 4 | 0.0004 | 0.001 | 43 |
| 1 Ngan | 400 | 0.04 | 0.099 | 4,306 |
| 1 Rai | 1,600 | 0.16 | 0.395 | 17,222 |
Why Understanding Thai Plot Sizes Helps Property Buyers
Most land for sale in Thailand is priced per Rai or Ngan. Without knowing the land measurement system, it’s easy to miscalculate costs or underestimate a plot’s value. This is especially important when comparing properties listed in both the local and metric system.
Make Smart Real Estate Decisions in Thailand
If you’re unsure how to read Thai land documents or calculate land sized conversions, a local property expert can guide you. Understanding the differences between Thailand’s system and your home country’s can help you invest wisely and avoid errors.
Need help with land measurements in Thailand or title deeds? Get in touch with us — we assist both investors and residential buyers with accurate property evaluations and legal support.