How big do tarantulas get un the us?

In the U.S., tarantulas can vary in size depending on the species. The most common species, such as the Texas brown tarantula, can have a leg span of up to 4-5 inches, while the Goliath birdeater, which is not native to the U.S. but often compared, can reach up to 11 inches. Overall, U.S. tarantulas typically range from 3 to 6 inches in leg span.