Convert from ngarn to square meter

Unit Definition (ngarn)
The ngarn is a unit of land area in Thailand. The ngarn equals 1/4 rai, 100 talangwah (tw), or exactly 400 square meters (478.396 square yards or just under 0.1 acre).

Unit Definition (square meter)
The square meter is the SI unit of area, equal to 10E4 square centimeters, approximately 10.763 91 square feet, or approximately 1.195 990 square yard.