Sigma Calculator
Evaluate finite summations using sigma notation. Enter a term in n, choose the lower and upper limits, and review every term, subtotal, and final sum.
Type an expression such as n, n², 2n+1, or 1/n.
Choose the starting and ending integer values for n.
See the expanded series, term table, and running total.
Each integer value of n is substituted into the expression, then the resulting terms are added together.
| n | f(n) | Running total |
|---|
Use n, numbers, parentheses, +, −, *, /, %, and ^. Common functions include sqrt(), abs(), sin(), cos(), tan(), log(), ln(), exp(), floor(), ceil(), and round(). Constants pi and e are also supported.
This calculator evaluates finite integer ranges only. The lower and upper limits are included, and the upper limit must be greater than or equal to the lower limit.
What does sigma notation mean?
The Greek letter sigma, Σ, means “add.” It tells you to evaluate an expression for each index value and add all resulting terms.
Are the limits included?
Yes. Both the lower and upper limits are included in the calculation.
How do I enter n squared?
Enter n^2. You can also use n*n.
Can I calculate an infinite series?
This tool calculates finite sums. Infinite series require convergence analysis and often a different formula or test.
Results are estimates generated locally in your browser using standard mathematical formulas. They are for informational and educational purposes only and are not a substitute for verification in coursework, examinations or professional contexts requiring certified accuracy. VisionVix accepts no liability for decisions based on this tool's output.
This calculator is designed for educational finite summations. Results depend on valid mathematical syntax and floating-point arithmetic. Verify important academic or professional calculations independently.
