BPM: After Hours

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
110.8 BPM
Beats per bar
4 beats
Bars per minute
27.7
Length of 1 beat
0.5415 sec
Length of 1 bar
2.1661 sec
Beats per second
1.8467 Hz

Fractions for base 16

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


1/16
1/16
6.25%
135 ms
7.39 Hz

2/16
1/8
12.5%
271 ms
3.69 Hz

3/16
3/16
18.75%
406 ms
2.46 Hz

4/16
1/4
25%
542 ms
1.85 Hz

5/16
5/16
31.25%
677 ms
1.48 Hz

6/16
3/8
37.5%
812 ms
1.23 Hz

7/16
7/16
43.75%
948 ms
1.06 Hz

8/16
1/2
50%
1 083 ms
0.923 Hz

9/16
9/16
56.25%
1 218 ms
0.821 Hz

10/16
5/8
62.5%
1 354 ms
0.739 Hz

11/16
11/16
68.75%
1 489 ms
0.672 Hz

12/16
3/4
75%
1 625 ms
0.616 Hz

13/16
13/16
81.25%
1 760 ms
0.568 Hz

14/16
7/8
87.5%
1 895 ms
0.528 Hz

15/16
15/16
93.75%
2 031 ms
0.492 Hz

16/16
1/1
100%
2 166 ms
0.462 Hz

24/16
3/2
150%
3 249 ms
0.308 Hz

32/16
2/1
200%
4 332 ms
0.231 Hz

48/16
3/1
300%
6 498 ms
0.154 Hz

64/16
4/1
400%
8 664 ms
0.115 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