English interface
Rai, ngan and square wah converter
Convert traditional Thai land units to square metres.
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Saves this tool's name on this device only (up to 20). No form values.
Only visible result text is included. Form fields are not read. Review sensitive values before sharing.
How to use it
- Enter rai, ngan and square wah.
- Calculate the total area.
- Compare with the land document when accuracy matters.
Important limitation
This calculation does not certify an area recorded on a title deed.
The interactive form is fully localized in English.
Reviewed 2026-08-26; next review 2027-02-26.
Core calculations, cited sources and main examples have been reviewed within the stated scope.
Sources
สำมะโนการเกษตร พ.ศ. 2566 — มาตราที่ใช้ในรายงานสำนักงานสถิติแห่งชาติ · opens in a new tabSupports 1 rai = 1,600 square metres.Source checked 2026-09-16เกณฑ์พื้นที่ขึ้นทะเบียนเกษตรกรปลูกผักกรมส่งเสริมการเกษตร · opens in a new tabSupports 1 ngan = 400 square metres; 1 square wah = 4 square metres follows from 1 ngan = 100 square wah.Source checked 2026-09-16Recorded updates
Site changelogReview history
Dates describe the review scope recorded below. A page update does not mean every source was checked again.
- Last recorded source/method review
Core calculations, cited sources and main examples have been reviewed within the stated scope.