Song length calculator

Calculate the total duration of a song from its tempo (BPM), time signature, and number of bars or phrases.

Input

Tempo & Structure

Results

Length of 1 beat

The length of a single beat is purely defined by the beats-per-minute (BPM) you chose.
  • Beats-per-minute: 108 BPM
  • Beats-per-second: 1.8 Hz
  • Length of 1 beat: 0.5556 second = 556 msec

    • Length of 1 bar

    The number of beats in a bar or measure is defined by the time signature you chose.
  • [ ♩ ♩ ♩ ♩ ] : 4 beats in a bar (time signature is 4/4)
  • Length of 1 bar (4 beats): 2.2222 second

    • Length of the song

    Now let's calculate the full length of the song
  • 80 bars = 20 phrases of 4 bars
  • Total song length is 177.776 secs = 2m 57.776s

    • References

    Most pop songs are around 80 bars long
    A 3-minute pop song at 120 bpm will have 360 beats
    Beats-per-minuteConvert BPM to Hz, bar length, fractions Audio delayCalculate audio delay length in msec Music FrequencyConvert pitch to musical note and wavelength Song lengthCalculate song length from BPM Music ScaleGenerate scales with frequencies Tap your tempoTap to find the BPM of a song or a heartbeat

    Frequently Asked Questions

    How do I calculate the length of a song from BPM?

    Find seconds per beat (60 ÷ BPM), multiply by beats per bar (usually 4), then multiply by bars. Example: 120 BPM, 4/4 time, 80 bars = (60÷120) × 4 × 80 = 160 seconds = 2:40.

    How long is 16 bars of music?

    Depends on BPM and time signature. In 4/4: at 120 BPM = 32 sec, at 90 BPM = 42.7 sec, at 140 BPM = 27.4 sec. Formula: 16 × 4 × (60 ÷ BPM). 16 bars is a common verse/chorus length.

    How long is a single bar in seconds?

    Bar length = (60 ÷ BPM) × beats per bar. In 4/4: at 60 BPM = 4 sec, at 120 BPM = 2 sec, at 180 BPM = 1.33 sec. In 3/4 (waltz) at 120 BPM = 1.5 sec.

    How many bars fit in 2 minutes?

    In 4/4 at 120 BPM: 30 sec = 15 bars, 1 min = 30 bars, 2 min = 60 bars. Formula: (seconds × BPM) ÷ (60 × beats per bar).

    How many bars is a typical pop song?

    Most pop songs are 64-96 bars. A 3-minute song at 120 BPM ≈ 90 bars. Typical structure: intro (4-8), verse (16), chorus (8-16), bridge, totaling ~80 bars.

    What is the difference between bars, beats, and measures?

    A beat is the basic time unit. A bar (= measure) groups beats per time signature: 4/4 = 4 beats/bar, 3/4 = 3 beats/bar. A phrase is typically 4 or 8 bars.