Guinea is approximately 245,857 sq km, while Argentina is approximately 2,780,400 sq km, making Argentina 1,031% larger than Guinea. Meanwhile, the population of Guinea is ~12.5 million people (33.0 million more people live in Argentina).
This to-scale map shows a size comparison of Guinea compared to Argentina. For more details, see an in-depth quality of life comparison of Argentina vs. Guinea using our country comparison tool.