Zeta functions are a family of special functions defined through a Dirichlet series. The most famous example is the Riemann zeta function. Wolfram|Alpha can compute values for multiple variants of zeta functions as well as help you explore other functionalities, such as visualization and series expansion.
Compute the properties for the Riemann zeta function or get a Riemann zeta function calculator.
Visualize or compute the Riemann–Siegel Z function and the Riemann–Siegel theta function.
Generalize the Riemann zeta function to the Hurwitz zeta function and further to the Lerch transcendent.
Visualize or compute other zeta-family functions.