Math
Arithmetic Sequence Calculator
nth term and sum of the first n terms of an arithmetic sequence.
aₙ
Sₙ
Amortization schedule
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This free Arithmetic Sequence Calculator covers nth term and sum of the first n terms of an arithmetic sequence.
Common difference d; a_n = a1 + (n−1)d; S_n = n(a1+a_n)/2. Other math tools are linked below.
Arithmetic Sequence Calculator — how it works
nth term and sum of the first n terms of an arithmetic sequence. Typical inputs are First term a₁, Common difference d and n. How it works beside the form states the identity the Arithmetic Sequence Calculator applies.
FAQ
How do I use the Arithmetic Sequence Calculator?
Open the Arithmetic Sequence Calculator, fill First term a₁, Common difference d and n, and read the result. Common difference d; a_n = a1 + (n−1)d; S_n = n(a1+a_n)/2.
What formula does the Arithmetic Sequence Calculator use?
The Arithmetic Sequence Calculator uses the identity in How it works. In words: Common difference d; a_n = a1 + (n−1)d; S_n = n(a1+a_n)/2.
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