Mt to kg Conversion in GWP 100yr Impact Results off by 10^6 ?

Question

I enter 5.4E5 Mt of CO2 emission to air as an output in my process. When I run a calculation on the system, the GWP [100yr] impact result is 5.4E14 kg CO2e. I assume there's a silly error here, but 5.4E5 Mt should equal 5.4E8 kg, so why is my GWP impact result 10^6 higher than expected?

Answer 1

1 Mt is one milion tonnes (1e6), thus 5.4e5 Mt is indeed 5.4*1e5*1e6*1e3 kg, thus 5.4*1e14 kg. Or am I missing something?