BPM: Ai Qing De Da Huai Dan

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
167.9 BPM
Beats per bar
4 beats
Bars per minute
42
Length of 1 beat
0.3574 sec
Length of 1 bar
1.4294 sec
Beats per second
2.7983 Hz

Fractions for base 16

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


1/16
1/16
6.25%
89.3 ms
11.2 Hz

2/16
1/8
12.5%
179 ms
5.60 Hz

3/16
3/16
18.75%
268 ms
3.73 Hz

4/16
1/4
25%
357 ms
2.80 Hz

5/16
5/16
31.25%
447 ms
2.24 Hz

6/16
3/8
37.5%
536 ms
1.87 Hz

7/16
7/16
43.75%
625 ms
1.60 Hz

8/16
1/2
50%
715 ms
1.40 Hz

9/16
9/16
56.25%
804 ms
1.24 Hz

10/16
5/8
62.5%
893 ms
1.12 Hz

11/16
11/16
68.75%
983 ms
1.02 Hz

12/16
3/4
75%
1 072 ms
0.933 Hz

13/16
13/16
81.25%
1 161 ms
0.861 Hz

14/16
7/8
87.5%
1 251 ms
0.800 Hz

15/16
15/16
93.75%
1 340 ms
0.746 Hz

16/16
1/1
100%
1 429 ms
0.700 Hz

24/16
3/2
150%
2 144 ms
0.466 Hz

32/16
2/1
200%
2 859 ms
0.350 Hz

48/16
3/1
300%
4 288 ms
0.233 Hz

64/16
4/1
400%
5 718 ms
0.175 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