DTS to AC3 converter
Convert DTS to AC3 in seconds, free and unlimited. No upload, no sign-up, no watermark: your audio never leaves your device.
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Quick answer: To convert DTS to AC3, add the DTS file to the iHateFiles DTS to AC3 converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. DTS is a format most software has stopped opening. AC3 is not.
Should you convert DTS to AC3?
Yes. Very little current software opens DTS, so converting it is the way to keep listening to it. Pick a generous bitrate.
Both DTS and AC3 are lossy
DTS (DTS surround) has already discarded some of the sound, and AC3 (Dolby Digital) will discard a little more. The AC3 encoder works from the DTS, not the original recording, so pick a bitrate at or above the source. A lower one saves space and costs quality you cannot get back.
Where the AC3 will play
AC3 plays on DVD players, AV receivers and TVs.
DTS and AC3 side by side
| DTS | AC3 | |
|---|---|---|
| Inside the file | DTS surround | Dolby Digital |
| Compression | Lossy | Lossy |
| Carries sound | Yes | Yes |
| One minute of stereo | 6 to 11 MB | 3 to 5 MB |
| Plays on | Needs converting first | DVD players, AV receivers and TVs |
| Here | Read only | Read and write |
What usually goes wrong
About the DTS. Playing DTS on a device that cannot decode it produces silence or static rather than an error, which looks like a broken file.
About the AC3. Playing a 5.1 AC3 track on stereo speakers can leave dialogue almost inaudible, because the centre channel carrying it is not being mixed in. Downmixing to stereo during conversion fixes that.
How to convert DTS to AC3
- Add your DTS file. It is read from your disk and stays there.
- Check the settings. The output format is already set to AC3.
- Press convert and the AC3 file is saved back to your device.
Questions
How do I convert DTS to AC3?
Open this page, add your DTS file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this DTS to AC3 converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to AC3 lose quality?
AC3 is a lossy format, so some detail is discarded. The quality control on this page decides how much. The default is set high enough that most people cannot see the difference.
Can I convert several DTS files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.