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55 dB vs 60 dB

60 dB is 5 dB louder than 55 dB — about 3.2× the sound energy and roughly 1.4× the perceived loudness. In practice that is the difference between a mechanical keyboard and normal conversation at 1 m.
55 dB 60 dB 55 60
The bars show the two levels on the 0–140 dB scale. The gap looks small as a number, but on a logarithmic scale each 10 dB is a ten-fold jump in energy.
55 dB60 dB
Typical sourceA mechanical keyboardNormal conversation at 1 m
CategoryModerateModerate
Sound pressure0.0112 Pa0.0200 Pa
NIOSH safe timeUnlimitedUnlimited
Protection neededNoNo

Why 5 dB is a bigger jump than it looks

A 5 dB gap looks small written down, but decibels are logarithmic. Every 10 dB multiplies sound energy by ten and roughly doubles perceived loudness. Going from 55 dB to 60 dB therefore multiplies the acoustic energy by about 3.2× while your ear reports something closer to 1.4× as loud. Both statements are true — they simply measure different things.

Which one is safe?

Both 55 dB and 60 dB fall below the 85 dBA action level, so neither carries a hearing-damage risk at any duration. The practical difference is annoyance and speech interference rather than safety.

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The distance equivalent

One intuitive way to feel a 5 dB difference is to think in distance. Outdoors, every doubling of distance removes about 6 dB, so standing at 60 dB versus 55 dB is roughly like standing 1.8× closer to the same source. Conversely, moving about 1.8× further away would bring 60 dB down to 55 dB.

Adding the two levels together

Decibels do not add arithmetically. A 55 dB source running alongside a 60 dB source does not produce 115 dB — the correct total is 61.2 dB, calculated as 10 × log₁₀(10^(55/10) + 10^(60/10)). Because the louder source dominates, the quieter one contributes only 1.2 dB. Our decibel calculator does this for any combination.

Frequently asked questions

Is 60 dB much louder than 55 dB?
60 dB carries about 3.2 times the sound energy of 55 dB and is perceived as roughly 1.41 times as loud.
What is the difference between 55 dB and 60 dB?
The difference is 5 dB. 55 dB is comparable to a mechanical keyboard, while 60 dB is comparable to normal conversation at 1 m.
What do 55 dB and 60 dB add up to?
Combined, two sources at 55 dB and 60 dB produce about 61.2 dB — not 115 dB — because decibels add logarithmically.
Which is safe, 55 dB or 60 dB?
Both are below the 85 dBA action level and safe for unlimited exposure.

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Sources & accuracy. Reference levels are drawn from published data by NIOSH, OSHA, the CDC, the WHO Environmental Noise Guidelines and the American Speech-Language-Hearing Association (ASHA). Real-world readings vary with distance, room acoustics and the specific source, so treat every figure as a typical value rather than an exact constant. Last reviewed 2026-08-11.