BPM: Beautiful Crazy

Give tempo and time signature

The speed at which music is played/performed is expressed as beats-per-minute or BPM. The more BPM, the faster the music goes. Most music uses the same BPM range as the human heartbeat: 60-140 bpm.
A base of 16 means that the bar is divided in 16 parts of length 1/16. The most common bases are 4, 8, 16 or 32. Use base 12 or 24 if you also want calculations for triplets.
This is also used in "Quantising": the process of snapping notes to the nearest beat subdivision.

Quick BPM overview

Beats per minute
103.3 BPM
Beats per bar
4 beats
Bars per minute
25.8
Length of 1 beat
0.5808 sec
Length of 1 bar
2.3233 sec
Beats per second
1.7217 Hz

Fractions for base 16

These are some common fractions (handy for setting delays, LFO and modulation parameters)


1/16
1/16
6.25%
145 ms
6.89 Hz

2/16
1/8
12.5%
290 ms
3.44 Hz

3/16
3/16
18.75%
436 ms
2.30 Hz

4/16
1/4
25%
581 ms
1.72 Hz

5/16
5/16
31.25%
726 ms
1.38 Hz

6/16
3/8
37.5%
871 ms
1.15 Hz

7/16
7/16
43.75%
1 016 ms
0.984 Hz

8/16
1/2
50%
1 162 ms
0.861 Hz

9/16
9/16
56.25%
1 307 ms
0.765 Hz

10/16
5/8
62.5%
1 452 ms
0.689 Hz

11/16
11/16
68.75%
1 597 ms
0.626 Hz

12/16
3/4
75%
1 742 ms
0.574 Hz

13/16
13/16
81.25%
1 888 ms
0.530 Hz

14/16
7/8
87.5%
2 033 ms
0.492 Hz

15/16
15/16
93.75%
2 178 ms
0.459 Hz

16/16
1/1
100%
2 323 ms
0.430 Hz

24/16
3/2
150%
3 485 ms
0.287 Hz

32/16
2/1
200%
4 647 ms
0.215 Hz

48/16
3/1
300%
6 970 ms
0.143 Hz

64/16
4/1
400%
9 293 ms
0.108 Hz

How to use this page

If you have a 135 BPM song, and you want a phase modulation of 4 beats: that is 1.778 sec
If you have a 98 BPM song in a measure of 3/4, and you want to know how long 8 bars is: 14.7 sec
If you have a 128 BPM song, and you want an audio delay of 2/3 of a beat: this is 313 ms
If you have a 80 BPM song, and you want an LFO of 5/4 of a bar: this is 4687.5 ms

Musical genres

These are some popular modern music genres with typical BPM speeds.

Slow dub/reggae
75 BPM
Fast dub/reggae
90 BPM
Deep house
96 BPM
Slow house
120 BPM
Electro house
130 BPM
Trance
135 BPM
Dubstep
140 BPM
Hard house
145 BPM
Jungle
160 BPM
Drum&Bass
175 BPM
Gabber
190 BPM

Music calculators & converters

Beats-per-minute
Convert BPM to Hz, bar length, fractions
Audio delay
Calculate audio delay length in msec
Music Frequency
Convert pitch to musical note and wavelength
Song length
Calculate song length from BPM
Music Scale
Generate scales with frequencies
Tap your tempo
Tap to find the BPM of a song or a heartbeat