Tools for Audiophiles
30 toolsTest and analyze your audio equipment. Speaker testing with frequency sweeps, sound level measurement, detailed audio analysis, format conversion, and channel configuration.
Ear Trainer
Hearing which frequency is the problem is a skill built by repetition. Everything you need for that is here.
RPM Meter
Five ways to read rotation speed: by sound, by a marker in the camera, by the phone's gyroscope, by screen strobe and by a printable strobe disc. Plus lamp flicker and PWM.
Speaker & Headphone Test
Test your speakers, headphones, or surround system right in the browser.
Speaker Cleaner
Water eject at 165 Hz, a dust sweep, and a microphone check that tells you whether the sound actually changed.
Subwoofer Test
Test your subwoofer with tone generator, frequency sweeps, bass drops, diagnostics, and room mode calculator.
Microphone Test
Check if your microphone works — test volume, sensitivity, noise floor, and audio quality in the browser.
Bluetooth Audio Test
Test any Bluetooth audio device: headphones, speakers, earbuds, car audio. Measure latency, check speaker channels, test mic quality.
Sound Level Meter
Measure noise levels in decibels using your device microphone. Free, private.
Tinnitus Test
Free tinnitus test: match the frequency of your ringing, find masking noise that covers it, and check the impact. Headphones recommended.
Audio Inspector
Inspect audio files for true quality — detect upsampled or re-encoded tracks by analyzing the spectrum.
Audio Comparator
Compare two audio files side-by-side with objective metrics — LUFS, spectrum, dynamic range, ABX blind test, sample-level diff.
Audio Metadata Editor
View, edit or strip ID3 tags, cover art and comments via WebAssembly
Audio to Notes
Transcribe any audio recording into notes, MIDI, and sheet music using AI.
Music Genre Detector
Upload an audio file to identify its genre, mood, dominant instruments, BPM and musical key.
Instruments in a song
Upload a track and get the list of instruments plus a map of where each one enters.
Audio Volume Changer
Increase or decrease volume of MP3, WAV, FLAC and other formats online.
Equalizer
Professional 10-band equalizer with real-time preview, spectrum analyzer, and 14 presets. Adjust bass, treble, mids, apply high/low-pass filters — all directly in your browser.
Convert Audio
Convert audio between MP3, WAV, FLAC, OGG, AAC and 35+ other formats. Batch up to 500 files — adjustable bitrate, sample rate, and quality.
Audio Compressor
Drop any audio file and we will detect the format automatically. Optimal compression settings are applied based on the detected codec.
Audio Player Online
A player for people who listen closely: it plays the ordinary formats and the ones the browser does not know, reads CUE albums, shapes tone with 31 bands and matches loudness between recordings.
8D Audio
Load a song and hear it circle your head.
Channel Converter
Upmix stereo to 5.1 or 7.1 surround, or downmix a surround file back to stereo or mono — in your browser.
Mono to Stereo
Convert mono audio files to stereo — duplicate, pan, or create pseudo-stereo effect. Runs in your browser.
Loud Sound Generator
Play loud sounds instantly — alarms, sirens, horns, horror effects. Boost your audio files up to 400%.
