The result of your conversion between meter kilogram-force and zettajoule appears here
To convert between Meter Kilogram-force and Zettajoule you have to do the following:
First divide 9.80665 / 1.0e+21 = 0.
Then multiply the amount of Meter Kilogram-force you want to convert to Zettajoule, use the chart below to guide you.
Symbol: m kgf
No description
Symbol: zJ
No description