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Support NoiseLevelDB

NoiseLevelDB is free, fast, ad-light and independent — no paywall, no sign-up. If it saved you time or answered your question, a small crypto tip helps cover hosting and keeps the data current.

There is no obligation whatsoever. The entire site — the full decibel chart, 130+ level pages, 50 sound guides, the calculators and the country noise-law references — stays free for everyone regardless. A tip simply says thank you and funds the next update.

Tip with crypto

Scan a QR code or copy an address below. Please double-check the network before sending — funds sent on the wrong network can be lost.

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Please send only on the network shown. The EVM address accepts ETH, BNB (BSC), Base, Polygon and most ERC-20 tokens including USDT and USDC. The USDT address shown is for the Tron (TRC-20) network. Bitcoin and Solana each use their own network only.

Other ways to help — free

Share a page. Linking to a level or guide from a forum, blog or social post is the single most valuable thing you can do.
Report an error. If a figure looks off, tell us — accuracy is the whole point of this site.
Use the affiliate links. When you buy hearing protection or a sound meter through our recommended gear links, we may earn a small commission at no extra cost to you.

Hearing protection

For anything above 85 dB, rated protection matters. Look at the NRR (US) or SNR (EU) figure — real-world reduction is roughly (NRR − 7) ÷ 2.

Electronic ear muffs (NRR 22–25)Shooting, mowing — amplify speech, block bangsLink coming soon

Reusable filtered earplugs (NRR 20)Concerts & musicians — flat attenuationLink coming soon

Foam earplugs (NRR 32)Sleep, travel, DIY — highest raw NRRLink coming soon

As an affiliate we may earn from qualifying purchases. This never changes our data or recommendations.

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.