The largest continent on Earth is Asia. Covering over 44.5 million square kilometers (17.2 million square miles), Asia constitutes approximately 30% of the Earth's total land area. It is home to diverse cultures, languages, and ecosystems, making it one of the most varied and populous regions on the planet. Asia includes the world's most populated countries, such as China and India, and has a vast range of geographical features, including mountains, deserts, and plains. The continent's rich history and economic significance contribute to its global importance.