Math
Sum of Series Calculator
Sum of an arithmetic or geometric series (mode 0 arithmetic, 1 geometric).
Free to use — no sign-up or login.
Sum Sₙ
Amortization schedule
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This free Sum of Series Calculator covers Sum of an arithmetic or geometric series (mode 0 arithmetic, 1 geometric).
Use the closed forms already listed on the sequence pages. Related math tools sit beside How it works, with no account required.
Using the Sum of Series Calculator
Sum of an arithmetic or geometric series (mode 0 arithmetic, 1 geometric). Typical inputs are Mode (0 = arithmetic, 1 = geometric), First term, d or r and n terms. How it works beside the form states the identity the Sum of Series Calculator applies.
FAQ
How do I use the Sum of Series Calculator?
Open the Sum of Series Calculator, fill Mode (0 = arithmetic, 1 = geometric), First term, d or r and n terms, and read the result. Use the closed forms already listed on the sequence pages.
What formula does the Sum of Series Calculator use?
The Sum of Series Calculator uses the identity in How it works. In words: Use the closed forms already listed on the sequence pages.