3D printer makers publish more noise data than most appliance brands, and the good ones publish a condition with it. We read the specification pages, wikis and FAQs for fourteen printers from five brands, covering enclosed and open frame machines. The published figures run from 44 dB to 60 dB.
Our 7 picks are listed above, with full specifications for each.
Two makers say where the microphone was
Anycubic publishes this footnote beside its figures: "The data provided is measured at 1 meter away from the front of the printer. Due to individual machine differences, the actual noise level may deviate from the advertised value, which is considered normal."
Creality publishes "Measured at 1-meter distance, data from Creality Lab" beside the Ender-3 V3 Plus figure.
That is the whole list. Elegoo, FlashForge and Bambu Lab publish numbers with no distance attached, and nobody in the category names a test standard such as ISO 7779. So a 44 dB figure and a 45 dB figure from different brands are not really a decibel apart. For the longer version of this problem, see why you cannot compare dB ratings across brands.
Elegoo compensates in a different way, by publishing the test state instead of the distance: PLA filament, silent mode, auxiliary part cooling fan off. That tells you something useful even without a distance, because it names the conditions you would have to match.
The enclosure is not the whole story
The intuition is that an enclosed printer is quieter, and our picks partly bear it out: the enclosed machines publish 44 to 50 dB and the open frame ones publish 48 to 55.
But Bambu Lab breaks the pattern completely. It publishes a figure for the open frame A1 and A1 mini, and publishes nothing at all for the enclosed P1S, X1 Carbon or H2D. If the enclosure were the headline, that is the reverse of what you would expect a maker to advertise.
And an enclosure can make things worse once you heat it. Anycubic's Kobra S1 Max is up to 48 dB in standard mode, 45 in quiet mode, and "55dB (with chamber heating enabled)". Chamber heating is what you turn on for ABS and ASA, so the quiet enclosed printer becomes the loudest machine in this guide exactly when you use its best feature.
The number nobody publishes
Every silent mode figure here is an invitation to a question no maker answers: how much slower is it?
Five makers publish a silent or quiet mode figure. None publishes the speed penalty. Creality comes closest with "In silent mode, the printing noise is greatly reduced", which is a sentence about noise, not about speed. Elegoo at least tells you its figure was taken with the auxiliary part cooling fan off, which is a real condition with a real cost: part cooling affects print quality on overhangs.
If you are choosing between two printers a decibel apart on paper, that unpublished speed penalty will matter more than the decibel.
Where the numbers stop
Prusa publishes nothing. Not on the CORE One, the MK4S or the MINI product pages, and not in the Knowledge Base. This is the brand most often described as quiet by people who own one, and every figure in circulation comes from a reviewer rather than from Prusa.
Some rows are simply blank. The non-Pro FlashForge Adventurer 5M has a Noise row containing "/". Anycubic's Kobra 3 V2 has one containing a dash, while the FAQ on the same site says "approximately 55dB".
Resin printers publish nothing at all. Elegoo and Anycubic both publish figures for their filament machines and neither publishes one for the Mars, Jupiter or Photon lines. That is why this guide has no resin section: not a choice, an absence.
We did not measure any of these printers. Every figure here is the maker's own, quoted as published, with the condition attached wherever the maker attached one.
