A standard audio CD holds 80 minutes of music, which is about 20 songs at an average length of four minutes each. Shorter songs let you fit a few more, longer songs a few less, but for most playlists the answer lands between 18 and 22.

That is the number to plan around if you are making a mix CD, burning a playlist or choosing songs for a gift. The rest of this page explains where the limit comes from and how to work with it.

Count minutes, not songs

A CD does not care how many tracks you put on it. It cares how long they are. The limit is 80 minutes of audio on today's discs, and 74 minutes on some older ones.

So the real answer depends on your songs. At three minutes each, like the short pop singles of the sixties or a lot of punk, about 26 fit. At four minutes, 20. At five minutes, 16. A playlist full of long album tracks or live versions might stop at twelve.

There is one more small thing. Most burning software adds a two-second pause between tracks, and over twenty songs that takes up most of a minute. If your playlist adds up to 79 minutes and 40 seconds, it may not fit. Aiming for 78 minutes leaves room.

How to check your own playlist

You do not need to add anything up by hand. Spotify, Apple Music and most music apps show the total running time at the top of a playlist. If it says 1 hr 20 min or less, it fits on one CD. If it says 1 hr 45 min, you need to lose six or seven songs, or make it a double.

What about 700 MB?

Blank discs are sold as 700 MB or 80 minutes, and the two labels describe the same disc used in two different ways.

Burned as an audio CD, it holds 80 minutes of full-quality sound and plays in any CD player: a car stereo, a boombox, a hi-fi from 1995.

Burned as a data disc full of MP3 files, the same CD can hold far more, roughly 150 songs at standard quality, because MP3 files are compressed. The catch is that an MP3 disc only plays in players built to read it. Many car and home players can, plenty cannot, and you often do not find out until the disc is in someone else's hands.

For anything you are giving to another person, an audio CD is the safe choice. Twenty songs that play everywhere are worth more than 150 that might not.

Why 80 minutes at all

The CD was designed around a single unbroken piece of music. The story often told is that the first 74-minute limit was chosen so that Beethoven's Ninth Symphony would fit on one disc. Whether or not that is the whole truth, the format was built for an album played start to finish, and later discs stretched the limit to 80.

That is still how a CD is best used. It is not a library. It is one sitting.

Why the limit is a good thing

A streaming playlist can run for nine hours, and most of them feel like it. Eighty minutes forces a decision about every song. The ones that stay are the ones that matter, and the person listening can tell.

It also means the order counts. With twenty songs and no shuffle, the first track sets the tone and the last one is what they are left with. There is a full guide on how to pick the right song order for a mixtape if you want the sequence to do some of the talking.

If your list is already longer than twenty and you cannot bring yourself to cut it, that is useful information too. It may be two discs, or it may be a sign that a different format suits you, and it helps to know the difference between a custom CD and a custom cassette before you decide.

From a list to a disc

Once the songs fit, the hard part is done. If they live in a playlist, you can turn a Spotify playlist into a physical gift without retyping a single title: the same songs, in the order you chose, on a CD someone can hold.

Twenty songs is not many. It is enough.

When you're ready, start creating your own mixtape.