Audio Tools
10 toolsGenerate tones, visualize waveforms, tap BPM and process audio.
Browser-based audio utilities — generate sine, square, triangle, and noise tones; tap your BPM; visualize waveforms; record from your microphone; and analyze frequency spectrums. Built on the Web Audio API, every tool runs locally so recordings stay private. Useful for musicians tuning instruments, podcasters checking levels, students learning sound theory, and developers prototyping audio features.
Which audio tools tool should I pick?
- Find the tempo of a songTap to the beat and get an instant BPM read-out.
- Generate a 440Hz tuning tonePick frequency, waveform, and duration.
- Record a short voice noteBrowser-only recording with download button.
- Test for stereo channel issuesLive waveform display per channel.
Frequently asked questions
Are these audio tools really free?
Yes — every audio tool on iwanttools is 100% free with no signup, no trials, and no usage limits. We don't charge for any feature.
Do these audio tools work offline or in private?
Every tool runs entirely in your browser using JavaScript. Once the page loads, your input never leaves your device — no server upload, no tracking, no logging.
Which audio tool should I use for tuning an instrument?
Use the comparison table above to pick the right tool for your scenario. The "Best tools for…" section also groups tools by common goals so you can jump straight to what fits.
Do I need to install anything?
No installation, no extension, no account. Open the tool page, use it, and close the tab — that's the entire workflow.
Can I use these tools on mobile?
Yes, every tool is mobile-optimized with large tap targets, a 16px input minimum to prevent iOS zoom, and a layout that adapts to phone screens.