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Diameter, circumference, surface area, volume – compare Earth to other planets, moons, or even custom-sized spheres. Instantly visualize scale like never before. earth size calculator
Earth diameter: 12,742 km Circumference: 40,075 km Surface area: 510.1 million km² Volume: 1.083 trillion km³ …compared to your custom size: [user input] Would you like a more technical, educational, or playful tone? I can adjust it for a kids' science site, a sci-fi worldbuilding tool, or a classroom resource. [Calculate Now] – It's free Diameter
Not all planets are created equal. See how Earth measures up. 742 km Circumference: 40
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