Tanzania is approximately 947,300 sq km, while Saint Kitts and Nevis is approximately 261 sq km, making Saint Kitts and Nevis 0.03% the size of Tanzania. Meanwhile, the population of Tanzania is ~58.6 million people (58.5 million fewer people live in Saint Kitts and Nevis).
This to-scale map shows a size comparison of Tanzania compared to Saint Kitts and Nevis. For more details, see an in-depth quality of life comparison of Saint Kitts and Nevis vs. Tanzania using our country comparison tool.