The result of your conversion between tsubo and square gigameter appears here
To convert between Tsubo and Square Gigameter you have to do the following:
First divide 3.3058 / 1.0E+18 = 0.
Then multiply the amount of Tsubo you want to convert to Square Gigameter, use the chart below to guide you.
Symbol: tsubo
No description
Symbol: gm2
No description