Discrete Fourier Transform Calculator

The DFT of a real sequence of numbers will be a sequence of complex numbers of the same length which can be calculated using discrete Fourier transform calculator. The DFT converts a finite sequence of equally-spaced samples of a function into an equivalent-length sequence of equally-spaced samples of the discrete-time Fourier transform (DTFT), which is a complex-valued function of frequency. Use this online Fourier series DTF calculator to perform discrete Fourier transformation calculation.

The discrete Fourier transform is a special case of the Z-transform. The Fourier Series DTF can be computed efficiently using a fast Fourier transform. The Fourier Series DTF can also be generalized to two and more dimensions. DTF are extremely useful because they reveal periodicities in input data as well as the relative strengths of any periodic components.