Free online calculator
Sum of Series Calculator
Add finite arithmetic series, explicit term lists, or indexed polynomial sums with exact results.
Solution
Your solution will appear here
Enter a problem, use the dedicated math keys, then calculate to see the answer and explanation.
Step-by-step solutions
Clear, detailed explanations
Instant results
Accurate answers in seconds
Free to use
No sign-up required
How to Use the Sum of Series Calculator
1
Enter the series
Use an ellipsis for arithmetic terms, a comma list, or a formula with bounds.
2
Identify the finite rule
The calculator determines the term count or evaluates the indexed formula.
3
Compute the exact sum
The result is returned without rounding when an exact value is available.
Example
Frequently Asked Questions
How do I enter 1 through 100?
Enter 1 + 2 + ... + 100.
Can I sum a formula?
Yes. Use a form such as Sum n^2 from 1 to 10.
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