How many decibels is a blender?
Between a measured 63 dB(A) at 1 m and no-load ceilings of under 81 or 85 dB(A), with one unweighted ceiling at 1 m off to the side. Those three kinds of number do not sort into a single list.
Santos declares an A-weighted emission sound pressure level for the #62: 63 dB(A), with an uncertainty K of 2.5 dB, measured with the appliance loaded, the microphone 1 m away and 1.6 m off the floor, under NF EN 12852, ISO 11201 and ISO 4871. That is a measurement in the full sense, with a value, a distance, a standard and an error bar. The speed or program used is not given, so we name none. The #62 is the only product in this group.
Hamilton Beach Commercial's no-load ceilings
Every Hamilton Beach Commercial manual we opened carries the same sentence with a different number: "The equivalent continuous sound level when equipment is operating at maximum speed on no-load is less than" some figure in dB(A). The condition is there, top speed with an empty jar. A distance and a standard are not.
| Ceiling | Models |
|---|
| Less than 81 dB(A) | Eclipse, Summit Edge, Tempest, Fury, Expeditor 600 |
| Less than 85 dB(A) | Rio, Tango, Expeditor 510, 900 and 1100 |
Inside this table the comparison is fair, because the wording is identical. Set beside Santos it breaks down: one is a measured level at a named distance with a load, the other an upper limit with neither.
The K90 is from CRANDDI, an Amazon-first brand, and its shield reduces "the noise to less 70db(within 1 meter)" in the product page's words. It names a distance, which is more than Hamilton Beach does. It is not marked A-weighted, though, and names no speed or load, so it stays in a group of its own.
There is no single quietest blender, then. There is a quietest measured value, Santos alone in its group; a five way tie at under 81 dB(A) among the Hamilton Beach Commercial maximum speed declarations; and one unweighted figure we report without ranking.
Hamilton Beach raised the Eclipse's ceiling by naming the speed
The Eclipse, model HBH755, is the blender Hamilton Beach Commercial's catalog sells on quiet: "QuietBlend Technology - Reduces motor noise and works with the Quiet Shield enclosure to lower sound to a conversation level."
Its 2016 and 2019 manuals declared "less than 70dB(A)" with the mixer "operating on no-load", no speed named. The 2023 manual for the HBH755R and the 2025 manual for the HBH755 series changed the sentence to "operating at maximum speed on no-load is less than 81 dB(A)". The number rose by 11 dB, and the condition gained the words that make it useful.
A declaration with no speed lets the maker pick the gentlest one. One at top speed is something you can plan around, so we use the current wording, keep the old one in the catalog facts, and would rather rank a maker on the fuller sentence than punish it for writing it.
The same rewrite put the shielded Eclipse and Summit Edge on exactly the ceiling of the unshielded Tempest, Fury and Expeditor 600. That does not mean the Quiet Shield does nothing. It means an empty jar is not a smoothie.
Noise comes from three places in a blender: the motor and its cooling fan, the blade and coupling, and whatever is in the jar hitting the jar wall. A no-load figure covers the first two and leaves out the third entirely, which in a frozen drink is most of what you hear.
Santos's 63 dB(A) is the most useful figure in this guide for that reason, even though it is not the lowest looking. The #62 is measured with the appliance loaded, so the hood, the brushless motor and the anti-vibration jar mat all show what they do against real contents. Hamilton Beach Commercial's ceilings are good for comparing its motors and poor for predicting a frozen margarita.
Scale helps here. Roughly every 10 dB is a doubling of perceived loudness, so a blender at 80 sounds about twice as loud as one at 70 in the same room, and the 4 dB between the two Hamilton Beach ceilings, 81 and 85, is audible.
Our decibel chart sets the Santos #62's 63 dB(A) at one metre beside normal conversation and a vacuum cleaner. For more on reading these numbers, see sound power versus sound pressure.
Sold in Europe, a commercial blender counts as machinery. EU machinery rules then require the maker to declare the A-weighted emission sound pressure level at the workstation, or say that it does not exceed 70 dB(A). That requirement is why Santos prints a full declaration, and why Hamilton Beach Commercial prints its sentence in every international manual, in a dozen languages, on its own use and care server.
The US versions are the same series at 120 V, listed side by side with the 230 V versions in Hamilton Beach Commercial's 2023 catalog, and that catalog is the mapping we rely on. The figures describe the series as documented; we found no separate figure for the 120 V units.
Café grinders fall under the same European rules, so the figures in our coffee grinder guide come mostly from European café equipment makers.
Home blenders face no equivalent rule and carry no EU energy label. Nothing forces a number onto the page.
One home exception turned up. Philips prints "Noise level: Lc = 89 dB [A]" in the manual for its Avance HR3868 high speed blender, without saying whether that is sound power or sound pressure, and its US page now marks the HR3868/90 discontinued, so it is not in our table. Philips prints nothing comparable for its air fryers: our air fryer guide went through the manuals for a range of Philips Airfryers and found no noise figure in any of them, only a support article saying an Airfryer's fan noise "can be up to 65 dB (decibel)".
Do Vitamix, Blendtec and Breville publish decibel ratings?
No. The Quiet One's commercial page promises "Patented Noise Reduction" and "reduced noise", yet its sell sheet and owner's manual contain no decibel value, and neither do the international and EMEA Ascent manuals.
Blendtec's Stealth 885 spec sheet calls it "the world's quietest commercial blender" and says its enclosure lets it operate "at the sound level of normal conversation", with no number. The Stealth owner's manual repeats the pattern: the enclosure gives "the quietest blending experience available", and again no figure follows.
Breville's manual for The Q has nothing. Hamilton Beach's home Sound Shield 950 and Professional Quiet Shield product pages call the blenders quieter, and the Sound Shield 950 manual stops there. Braun's TriForce manual, Smeg's BLF03 manual and product pages, Zwilling's Enfinigy manuals and Kuvings's US blender pages are silent on decibels too, as is Ceado's B285 silent blender manual.
Some documents would not open. KitchenAid's server refused the request for its current Power Plus blender manual, and Waring's spec sheet server had an expired certificate. We found no maker documents with figures for Ninja, Nutribullet, Oster or Cuisinart, and left out any brand we could not check.
These blenders may well be quiet. A guide that ranks published figures still cannot rank them. Countertop ice makers show the reverse pattern, nine brands printing a number while the best-known machine prints none, as our ice maker guide explains.
Choosing for a bar, a cafe or a home
A bar or cafe where noise is part of the customer experience should start with the Santos #62, the only figure taken the way a customer hears it, loaded and at a metre.
Between Hamilton Beach Commercial models, the under 81 and under 85 ceilings compare their motors fairly, and the Quiet Shield on the Eclipse and Summit Edge is there for the ice those ceilings leave out.
At home there is no number to shop on from any mainstream brand. An enclosure is the one design feature that reliably helps with ice, and the CRANDDI K90 is the only enclosed blender we found at a home price whose maker prints any figure at all, even one too loosely stated to rank.
