Total Land Area of Earth in Square Kilometers

The Earth's total land area is approximately 148.9 million square kilometers (about 57.5 million square miles). This represents roughly 29.2% of the planet's surface; the remaining 70.8% is water.

For context:

• Largest country: Russia (~17.1 million km²)
• Largest continent: Asia (~44.6 million km²)
• Smallest country: Vatican City (~0.44 km²)