Content is loading…
Measure noise levels with a live SPL gauge & history.
Start measuring to see the live history chart.
Device microphones aren't lab-calibrated. The meter shows dBFS + 100 + offset. Compare against a known meter or a 60 dB hum and adjust until they match.
Decibel Meter uses your microphone to estimate the sound pressure level around you in dB, with a live gauge, min/avg/max statistics, peak hold and a history chart. It also warns you when levels exceed the 85 dB safe-exposure threshold. Measurement happens entirely in your browser.
Free online decibel meter that measures the noise level around you using your microphone. See a live SPL gauge with colored safe/warning zones, running minimum, average and maximum, peak hold, and a scrolling history chart. Includes a reference table (whisper to jet engine), an exposure warning above 85 dB and a calibration slider to fine-tune for your device. Great for checking offices, bedrooms, studios and neighborhoods — everything runs locally in your browser.
Decibel Meter provides a quick, browser-based way to measure ambient noise levels using your device's microphone without needing to install separate software or register for an account. It features a live SPL gauge, running statistics for minimum, average, and maximum levels, and a scrolling history chart to track changes over time. Because all processing runs locally in your browser, your audio data remains private and secure on your device.
Good to know: Browser-based measurement relies on your device's microphone calibration and is intended for general estimation rather than certified acoustic or legal compliance measurements.
Measure ambient noise levels and track sound pressure using your browser's microphone.
Open the online decibel meter tool
Navigate to the Decibel Meter page in your web browser to access the live SPL gauge.
Grant microphone access to the tool
Allow your browser to use your device microphone so the tool can measure surrounding noise.
Calibrate your device microphone if needed
Use the calibration slider to fine-tune the decibel measurements for your specific hardware.
Monitor live sound pressure levels
View the live SPL gauge, running minimum, average, maximum, peak hold, and history chart.
Check safe exposure levels
Observe the colored safe and warning zones, including exposure warnings above the 85 dB threshold.
Estimated time: PT1M
Share this tool
Generate sine, square, triangle, sawtooth tones at any frequency.
Record voice or audio from your microphone and download it instantly.
Stereo sine-tone binaural beat generator with brainwave presets and sleep timer.
Visualize sound as a live frequency-vs-time spectrogram — from your mic or a file.
Split audio files into chunks by time or count. 100% browser-based, no upload.
Convert audio to text with AI. Chunked processing, pay per actual usage.
Convert audio files between formats. WAV output, 100% browser-based.
Trim and cut audio files to any duration. Precise start/end control.
Merge and combine multiple audio files into one. Browser-based, no upload.
Detect the tempo (BPM) of any song or audio file automatically.
Convert text or Markdown to a Word .docx file with live preview, RTL, and page-setup options.
Draw a Secret Santa with exclusions and share a private reveal link for each person.
Make custom bingo cards from your own words — play, print, or share a link.
Convert images to video with the Ken Burns zoom/pan effect. Add music and export as WebM.
Load and compare multiple URLs side by side in resizable iframes.
Rank anything with quick 1-v-1 matchups → a full ordered list you can share.
Convert Markdown to a fully customized, RTL-ready PDF.
See your public IP address plus full location, ISP, ASN, timezone, coordinates, and more.
