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Audio Tools
Convert OPUS files to MP3 client-side. No upload, full quality control.
Open opus → mp3Audio Tools
Calculate reverberation time (RT60) using the Sabine equation.
Open Reverb TimeYour specific task is convert opus files to mp3 client-side. Open the page, drop your input, get the result — typically under a second.
Your goal is calculate reverberation time (rt60) using the sabine equation. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. opus → mp3 focuses on convert opus files to mp3 client-side; Reverb Time focuses on calculate reverberation time (rt60) using the sabine equation. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both opus → mp3 and Reverb Time work without signup. We only ask for an email if you decide to subscribe to a paid plan.