How Loud Is a Dishwasher? (Typically 42–55 dB)
Quick answer
42–55 dB
Most modern dishwashers are rated around 42–55 dB, and anything rated in the low 40s is considered quiet. The number on the label is a laboratory rating, so the level you notice in your kitchen depends on the wash stage, the cabinetry and how far away you are.
Below 40 dB (quietest rated models) to around 60 dB (older machines)
label ratings are lab sound power; room readings are usually taken about 1 m from the door
No hearing risk at these levels — the question is comfort in open-plan spaces.
30 dB
60 dB
85 dB
120 dB
How a dishwasher compares to other sounds
| Sound source | Decibel level | Relative loudness |
|---|---|---|
| Quietest rated models | below 40–42 dB | |
| Typical modern dishwasher (rated) | 44–48 dB | |
| Budget or older dishwasher | 52–60 dB | |
| Quiet library | ~40 dB | |
| Refrigerator hum | 35–50 dB | |
| Normal conversation at 1 m | ~60 dB |
Why the sound changes through the cycle
A dishwasher is not one steady sound. Filling is a soft rush of water, the main wash adds the spray arms and the circulation pump, heating phases can be noticeably quieter, and the drain pump produces a short, more tonal burst. Drying is often near-silent unless the model uses a fan.
Because of this, a single quick reading tells you little. The drain or spray phases may stand out by several decibels above the average, which is why a machine that seems quiet in the evening can still be noticed by a light sleeper in an open-plan home.
Label rating versus what you measure at home
In the EU, the energy label states a dishwasher's airborne noise in dB(A) re 1 pW. That is sound power — the total acoustic energy the machine emits, measured under a standard laboratory method — not the sound pressure you would read at a particular spot in your kitchen.
Sound pressure in a room depends on distance, reflections from hard surfaces and the other sounds around it. A home reading at 1 m will therefore not match the label, and it may be higher or lower. Use the label to compare models; use your own measurement to understand how the machine sounds in your space.
Built-in, freestanding and the cabinetry around it
An integrated dishwasher behind a cabinet door is usually quieter in the room than the same machine freestanding, because the door and surrounding units block some of the sound. Gaps, a missing plinth or thin panels let more through.
Vibration matters too. A machine that is not level, or that touches neighbouring cabinets, can transmit hum into the worktop and floor — something that shows up as low-frequency rumble rather than splash noise.
- Check the machine is level and not touching adjacent units
- Make sure the plinth and any insulation blanket are fitted
- Load items so they do not rattle against each other or the spray arms
- Consider running the cycle when nobody is in the room
How to compare readings fairly
Measure from the same spot (about 1 m in front of the closed door), during the same stage of the cycle, with the rest of the kitchen quiet. Note the background level before you start so you can see how much the dishwasher adds.
Comparing a reading from your kitchen with one taken in another home, or on another phone, is unreliable. Rooms reflect sound differently, and uncalibrated phone and laptop microphones vary from device to device. Readings from SnapRoomScore are estimates; they are most useful for comparing before and after in the same room with the same device.
How loud is your own room right now?
Use the free browser-based decibel meter to estimate your room's noise level in seconds. Audio is processed in your browser; readings are uncalibrated estimates that vary by device.
Start measuringFrequently asked questions
Is 45 dB quiet for a dishwasher?
Yes. A label rating around 45 dB is at the quieter end of the market. Remember that it is a laboratory sound power figure, so it is best used to compare models rather than to predict an exact reading in your kitchen.
Why is my dishwasher suddenly louder?
Common causes include a blocked filter or spray arm, items rattling, a machine that has shifted out of level, or wear in the pump. A meter can confirm that the sound has changed, but it cannot diagnose the cause — check the manual or contact a technician if a new noise persists.
Can I check my dishwasher's dB rating with a phone?
Not directly. A phone or browser meter estimates sound pressure where you stand, while the label states sound power from a lab test. You can use a meter to compare cycles or settings in your own kitchen with the same device.
Related sound levels
Sources
Exposure times follow NIOSH's occupational recommended exposure limit (85 dBA over 8 hours, 3 dB exchange rate). They are guidelines for limiting risk, not thresholds at which injury is certain.
Decibel figures on this page are typical published values and vary with distance, equipment, and environment. Readings from a phone or laptop microphone are estimates, not certified measurements.