Summation Calculator

Calculate the sum of sequences and series using custom formulas. Enter a mathematical expression using variable 'n', specify the range, and compute the total sum along with individual terms.

Sequence Formula (use 'n' as variable)

Supported operations: +, -, *, /, ^ (power), sqrt(), sin(), cos(), tan(), log(), ln(), abs(), floor(), ceil()

Start Value (n)

End Value (n)

How to Use

Enter a formula: Use 'n' as the variable (e.g., n^2 for the sum of squares)
Set range: Define the starting and ending values for n
Calculate: Click the button to compute the sum and view all terms
Examples: Try "n" for arithmetic sum, "n^2" for sum of squares, or "2^n" for geometric series

Common Formulas

Sum of first n natural numbers: n (from 1 to n)
Sum of squares: n^2 (from 1 to n)
Sum of cubes: n^3 (from 1 to n)
Arithmetic sequence: 2*n + 1 (odd numbers)
Geometric sequence: 2^n (powers of 2)

Important Notes

This calculator evaluates mathematical expressions safely. For large ranges (over 10,000 terms), calculation may take a moment. The tool supports standard mathematical functions and operators.