Decibel Sound-Level Meter
Measure how loud your room really is in dB using your microphone — live gauge, 60-second history graph, peak/average stats and a hearing-safety warning.
Measure the sound around you
Tap Start and allow microphone access. Audio is analysed in real time on your device and never leaves it.
Browsers can't read true calibrated SPL, so this reading is approximate. Slide to match a known reference (e.g. another sound-level meter or app).
🔒 100% private — your microphone audio is processed entirely in your browser and is never recorded, uploaded or sent anywhere. Readings are an approximation for awareness, not a certified measurement.
Why you’ll love Decibel Sound-Level Meter
Instant & free
No signup, no paywall, no limits — Decibel Sound-Level Meter works the moment the page loads.
Completely private
Everything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any device
Fully responsive and touch-friendly — use it on your phone, tablet or desktop.
Uses your real device
Taps into your actual camera, mic or motion sensors — right in the browser.
How to use it
Open it
No download and no login — the tool is ready right at the top of this page.
Use it
Enter your details or start interacting. Everything updates live as you go.
Get your result
Copy, download or share your result in a single tap. That’s it.
Frequently asked questions
Decibel Sound-Level Meter is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
No. All sensor data is processed live on your device and never leaves it or gets stored.
Completely. Decibel Sound-Level Meter runs entirely in your browser (client-side). Nothing you type, upload or generate is sent to our servers, so your data never leaves your device.
No. It works instantly in any modern web browser — Chrome, Safari, Edge or Firefox — on desktop and mobile. You can even install this site as an app.
Yes. The tool is fully responsive and touch-friendly, so it works great on phones and tablets as well as computers.
Workaholic Developers — a software & AI studio. We built Decibel Sound-Level Meter (and 200+ other free tools) to show what we can do. Need something custom built? We’d love to help.
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Decibel Sound-Level Meter is one of 200+ free tools from Workaholic Developers — a software & AI studio. Need a website, app, AI agent or automation? Let’s talk.
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