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

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    Tap your tempo
    Tap 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.