How much music fits on a record?
A vinyl record stores sound as a single spiral groove. The louder the music and the more bass it contains, the wider the groove swings and the more space it takes. Longer sides mean the cutting engineer must pack grooves closer, lowering the level, reducing bass and raising the relative surface noise. Speed matters too: 45 RPM spreads the same music over more groove length, improving fidelity but reducing playing time.
Typical time limits per side
| Format | Recommended | Maximum (with compromises) |
|---|
| 12" at 33⅓ RPM | 18 – 22 min | ≈ 26 – 28 min |
| 12" at 45 RPM | 11 – 14 min | ≈ 16 min |
| 10" at 33⅓ RPM | 12 – 15 min | ≈ 17 min |
| 10" at 45 RPM | 7 – 9 min | ≈ 10 min |
| 7" at 45 RPM | 4 – 5 min | ≈ 6 min |
| 7" at 33⅓ RPM | 6 – 7 min | ≈ 8 min |
Planning your sequence
- Balance sides: keep sides within a minute or two of each other – the longest side determines the cut level.
- Inner groove distortion: place demanding, loud or sibilant tracks near the outer edge (start of the side).
- Double LP or 45 RPM: albums longer than about 44 minutes often sound better spread over two discs.
- Vinyl master: avoid excessive limiting and harsh high frequencies; centre or mono the deep bass.
Cost considerations
A double album roughly doubles lacquer, plating and pressing costs and requires a gatefold or double sleeve. For short-run pressings, many artists choose to edit the tracklist, or accept a slightly lower level on a single LP, to keep costs down.
Frequently asked questions
How many minutes fit on one side of an LP?
About 18 – 22 minutes for the best sound; up to 26 – 28 minutes with lower level and bass.
How long can a 7-inch single be?
About 4 – 5 minutes per side at 45 RPM, or 6 – 7 at 33⅓ RPM.
Why does a longer side sound quieter?
Grooves must be packed closer together, so the cutting level and bass must be reduced.
Is 45 RPM better than 33⅓?
45 RPM offers better high-frequency detail and lower distortion but less playing time.
Should my album be a double LP?
If it's longer than about 44 minutes, a double LP usually sounds noticeably better.
About SideTime
SideTime is an independent, free planning calculator for musicians and labels preparing releases for vinyl pressing. Limits are typical mastering-engineer guidance; your cutting engineer has the final say. We are not affiliated with any pressing plant.
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Last updated: October 28, 2026
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