Rai, Ngan, Square Wah Converter
Rai-ngan-wah ↔ square metres
Verified against sourcesLast verified 25 September 2026
Your numbers
rai
ngan
sq wah
Result
Enter your numbers on the left. The result appears here instantly.Enter your numbers above. The result appears here instantly.
Tested examples
Every example below is an automated test. Click one to try it.
Formula
- 1 rai = 4 ngan = 400 sq wah = 1,600 m²
- 1 ngan = 100 sq wah = 400 m²
- 1 sq wah = 4 m²
Assumptions
- Square wah is rounded to 2 decimals before splitting
- For checking numbers, not surveying. The legal area is on the title deed.
Sources
พระราชบัญญัติมาตราชั่งตวงวัด พ.ศ. 2542
มาตรา 9 และบัญชีท้ายพระราชบัญญัติ ข.(2) หน่วยของพื้นที่accessed 25 September 2026
Internal reference: reference/08_thai_land_units.md
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