Grand Canyon National Park is about 1.6 times bigger than Yosemite National Park.

Yosemite National Park is approximately 3,027 km² (1,169 sq mi), while Grand Canyon National Park is approximately 4,863 km² (1,878 sq mi), making Grand Canyon National Park 61% larger than Yosemite National Park.
Tip: This to-scale comparison of Yosemite National Park vs. Grand Canyon National Park uses the Mercator projection, which distorts the size of regions near the poles.

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