1. A pulsimeter comprising: a pulse wave detector that has a pulse wave sensor and outputs a pulse wave signal; a frequency analyzer for carrying out a frequency analysis on the pulse wave signal; a candidate extractor for extracting candidate spectrum peaks based on the frequency analysis result of the frequency analyzer; a phase angle information detector for detecting phase angle information of each of the extracted candidate spectrum peaks; a spectrum peak selector for selecting a target spectrum peak for calculating a pulse rate from among the extracted candidate spectrum peaks based on their respective phase angle information; and a pulse rate calculator for calculating the pulse rate based on the target spectrum peak.