How many active volcanoes are there on Earth?
There are about 1,500 potentially active volcanoes worldwide, aside from the continuous belt of volcanoes on the ocean floor. About 500 of these have erupted in historical time. Many of these are located along the Pacific Rim in what is known as the 'Ring of Fire.' In the United States, volcanoes in the Cascade Range and Alaska (Aleutian volcanic chain) are part of the Ring, while Hawaiian volcanoes form over a 'hot spot' near the center of the Ring.
There are 169 potentially active volcanoes in the United States.
Good sources for information about volcanoes outside the United States include Oregon State University's Volcano World and the Smithsonian Institution's Global Volcanism Program.
Related Content
Which volcanoes in the conterminous United States have erupted since the Nation was founded?
Where does the United States rank in the number of volcanoes?
What is the "Ring of Fire"?
How much of the Earth is volcanic?
What are some benefits of volcanic eruptions?
Can an eruption at one volcano trigger an eruption at another nearby volcano?
Do volcanoes affect weather?
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