Grand Canyon National Park is about 1.3 times smaller than Everglades National Park.

Everglades National Park is approximately 6,105 km² (2,357 sq mi), while Grand Canyon National Park is approximately 4,863 km² (1,878 sq mi), making Grand Canyon National Park 79.66% the size of Everglades National Park.
Tip: This to-scale comparison of Everglades National Park vs. Grand Canyon National Park uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Grand Canyon National Park vs. Everglades National Park

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