Arithmetic Sequence Calculator
Calculate the nth term, sum of n terms, common difference, and generate arithmetic sequences with visual growth charts and partial sums.
Free Sequences & Series Calculators
6 toolsArithmetic sequences, geometric series, harmonic numbers, and sum calculators. Browse our free sequences & series tools below — no sign-up required.
Geometric Sequence Calculator
Calculate nth term, finite and infinite sums, common ratio, and visualize exponential growth or decay in geometric sequences.
Harmonic Mean Calculator
Calculate the harmonic mean of any set of numbers, compare with arithmetic and geometric means, and verify the AM-GM-HM inequality.
Harmonic Number Calculator
Compute the nth harmonic number H(n), partial sums, approximations using the Euler-Mascheroni constant, and generalized harmonic numbers.
Sum of Digits Calculator
Calculate the digital sum, digital root, iteration steps, and divisibility properties of any number in multiple bases.
Sum of Series Calculator
Compute partial sums of arithmetic, geometric, telescoping, p-series, and power sum series with convergence analysis and visualization.