How loud is a breast pump?
A breast pump's stated noise figure runs from 32dB for the Elvie Pump to 48dB for Momcozy's M9 at its -300mmHg setting, on the makers' own pages. None of them says how far from the pump it measured.
These are the stated levels we found, each as its maker printed it:
- Elvie Pump: "32dB"
- Medela Magic InBra: "Silent operation (38 dB)"
- eufy S2 Pro: "46 dB operation"
- Zomee Z2, H1, Fit and W1: 46 decibels
- Momcozy M9: "48dB" in -300mmHg suction mode
Without a distance, these numbers line up less neatly than they look. The same motor measured at arm's length and across a room would give different readings, and no maker here says which it used.
We treat Elvie's 32 and Medela's 38 as clearly under the 46 to 48 group, and the 46s as level with each other. To place 32 to 48 dB against everyday sounds, see our decibel chart.
What does "under 45 dB" mean on a breast pump?
An "under 45 dB" figure on a breast pump is a ceiling: the maker says the pump stays below that level, not that it runs at it. Two pumps marked under 45 dB could sit far apart.
Ceilings are the most common kind of figure in this category. These are the ones we found:
- Momcozy M9: "≤42 dB"
- Momcozy Air 1: "≤45 dB"
- Medela Melody InBra and Motion InBra: "≤45dB", in their manuals
- Lansinoh Thrive 2-in-1 and DiscreetDuo Flow: under 45 dB
- Momcozy S12 Pro Quick: "≤46 dB"
- eufy S1 Pro Flex Edition: "under 46 dB"
- Momcozy M5 Smart, M6 and V2 Pro: "≤48 dB"
- Momcozy W1 and S9 Pro: "≤50 dB"
- Momcozy V1 Pro: "≤53 dB"
A ceiling is not ranked against a stated level. Lansinoh's Thrive under 45 and Zomee's Z2 at 46 may be one decibel apart or ten, and neither maker says.
Momcozy's M9 page says "At just 48dB", measured "in -300mmHg suction mode" in internal testing in 2024. The specification list lower on the same page reads "Under 48dB", and the comparison table on Momcozy's wearable collection page lists "≤42 dB".
The M6 shows the same drift: its own page says "Less than 50 dB" where the table says "≤48 dB". We use the M9's 48, the only Momcozy figure tied to a named setting.
Zomee's pages say 46 decibels in their visible text for all four of its pumps here. The FAQ markup that search engines read, inside the same pages, says "under 48 decibels" for the Z2 and the Fit, and "under 46 decibels" for the H1 and the W1. We quote the visible figure and note the other beside it.
Are wearable breast pumps quieter than standard pumps?
No, not on the makers' own figures. Zomee states 46 decibels for its wearable Fit and W1 and for its tubed Z2 and dual-motor H1, so one maker's wearable and standard pumps come out level.
The two lowest stated figures do belong to wearables, the Elvie Pump and Medela's Magic InBra. Neither Elvie nor Medela prints a figure for a tubed pump of its own, so their wearables cannot be set against their standard pumps.
We group the two kinds apart because they are built differently. A wearable carries its motor in the cup, inside clothing and against the body. A standard pump sits on a table or hangs from a strap and drives the cups through tubes, so its motor is a separate box in the room.
How loud is the eufy breast pump?
The S2 Pro from eufy is listed at "whisper-quiet 46 dB operation" in its US product description. The comparison table on the same page gives it a ceiling of under 46 dB, as it does the S2 and S1 Pro.
So eufy gives the S2 Pro both a stated level and a ceiling, a decibel apart at most, and gives no suction level or distance for either. The S1 Pro Flex Edition page says "whisper-quiet (under 46 dB)", a ceiling only.
On these figures the eufy wearables sit level with Zomee's, at about twice the price of a Zomee Fit or W1. What the S2 Pro adds is heat, vibration massage and a wireless charging case.
How loud is the Medela Pump In Style?
Medela publishes no decibel figure for the Pump In Style Pro, on its US page or in its manual. Its figures belong to in-bra pumps: 38 dB for the Magic InBra and a 45dB ceiling for two others.
We read Medela's US instructions for the Pump In Style Pro, the Pump In Style Pro hands-free, the Sonata, the Freestyle Hands-free, the Freestyle Mini and the Swing Maxi Hands-free. None gives a noise level. In several, the only "dB" is a Bluetooth output in dBm, which describes the radio signal, not the sound.
The Melody InBra and Motion InBra manuals both list "Noise Level ≤45dB" in their technical specifications. The Magic InBra's 38 dB appears on its product page and not in its manual.
No, Spectra, Willow and BabyBuddha publish no decibel figure we could find, and Philips Avent, Haakaa and Elvie's Stride pages carry none either. Their pages call the pumps quiet without a number.
Spectra Baby USA's manuals are scanned pages, so we read them page by page. The S1 and S2 manual's specifications section lists weight, power, adapter and battery, and the wearable manual's technical specifications list vacuum and cycle speeds by level, with no noise level in either.
Willow's pages for the Willow Go, Willow 360 and Willow Sync give no figure. Neither do BabyBuddha's pages for its 3.0 and wearable pumps, Philips' US page for the Avent SCF394/61, or Haakaa's page for the E-Ladybug.
What does hospital-grade mean on a breast pump?
Hospital-grade has no fixed meaning on a breast pump. The FDA says it does not recognize the term and that the term has no consistent definition, so each company could mean something different by it.
Zomee uses it for all four of its pumps here, and Momcozy's comparison table uses it for the V1 Pro. It says nothing about noise: Zomee's hospital-grade pumps and eufy's S2 Pro, whose page never uses the term, share the same 46 dB figure.
The FDA's buying and renting page explains which pumps are made for more than one user, and why it treats the rest as single-user devices.
Which breast pump is quietest for work?
The Elvie Pump carries the lowest published figure, 32dB, and Elvie pitches it at shared workplaces. Medela's Magic InBra, at 38 dB, is the only other pump whose stated figure falls clearly under the 46 dB group.
Neither figure says which suction level it describes. A pump run on a gentle setting may sound different from the same pump at full strength, and Momcozy's M9 is the only one whose maker says its figure was taken at the top, -300mmHg.
Price separates the two lowest figures. Elvie listed the Double at $399.99 against a regular $549.99, and Medela's US page shows no price for the Magic InBra. For pumping at night in a baby's room, our quiet nursery page looks at the rest of the gear that hums in a baby's room.
