AP & GP Calculator

Find nth term, sum of n terms, sum to infinity (GP) and step-by-step breakdown

First term (a₁)

Common difference (d)

n (term number / number of terms)

First term (a₁)

Common ratio (r)

n (term number / number of terms)

Enter two known terms and their positions to find common difference (AP) or ratio (GP)

Term 1 value

Term 1 position (n1)

Term 2 value

Term 2 position (n2)