The result of your conversion between tatami [Japan] and perch appears here
To convert between Tatami [Japan] and Perch you have to do the following:
First divide 1.62 / 25.29285264 = 0.06404971
Then multiply the amount of Tatami [Japan] you want to convert to Perch, use the chart below to guide you.
Symbol: tatami
No description
Symbol: perch
No description