One respiratory rate determines that equipment includes: that obtain be a unit (11) obtained of acceleration in mutually different direction, accelerates, is obtained by an acceleration transducer (301) of the respiration measurement body movement of a user Acceleration of its transformation of one converter unit (12x, 12y, 12z) in the direction obtained by the unit (11) obtained, into the spectrum information project in a frequency domain One phase shift unit (13x, 13y, 13z) converts amplitude spectrum for spectrum information project by removing phase information from spectrum information project One its total amplitude spectrum of peak detector (14) simultaneously detects a peak frequency based on the amplitude spectrum caused by total, indicates the peak frequency of a respiratory component A respiratory rate calculator (15) of a respiratory rate is calculated using peak frequency.
