Convertio Alternative: Free, No Upload, Files Up to 2 GB
Five audio converters compared on where the file goes, what the daily free tier allows, and how much control you get over the output.
Last updated: November 1, 2026
| Tool | Processing | Free limits | Paid plan | Account |
|---|---|---|---|---|
| Submind audio converter | On-device in the browser — the file never leaves your computer | Unlimited runs, 2 GB and 10 hours per file, 10 output formats | None — the whole tool is free | None |
| Convertio | Convertio’s servers | 10 conversions per 24 hours | Raises the file cap and the daily quota | None |
| CloudConvert | CloudConvert’s servers | 10 credits a day, 1 GB per file, 5 minutes per job | Raises the caps and adds an API | None |
| Zamzar | Zamzar’s servers | 50 MB per file, 2 conversions a day | 200 MB, 400 MB or 2 GB, depending on the plan | None |
| FreeConvert | FreeConvert’s servers | 1 GB per file, 20 conversion minutes a day | From $12.99/month for 1,500 minutes | None |
Limits come from each tool’s own help or pricing page, read on 1 November 2026. Prices and limits change without notice — check the vendor before you buy.
Which one should you choose?
Use Submind when the file is audio and you want it to stay put. Try it here. Ten formats, bitrate and sample-rate control, 2 GB per file, and no daily count to track.
Use Convertio when the file is not audio. It covers several hundred formats, including video, ebooks, fonts and CAD, and the browser extension is genuinely useful.
Use CloudConvert when the job runs on a schedule. It takes 1 GB files and offers an API, SDKs and a CLI.
Use Zamzar when you want the result emailed to you, or when you would rather use a service that has run since 2006.
Use FreeConvert when you have one large file. A 1 GB cap on the free tier is the most generous here.
When a paid tool is the better choice
Convertio wins on format breadth. Audio is a small corner of what it does. If the job is a video, a document or a font, none of the other four will finish it.
CloudConvert wins on automation. A pipeline cannot use a browser tab. The API and CLI turn a repeated conversion into a script.
FreeConvert wins on one big file. Its 1 GB free cap beats Zamzar’s 50 MB by a wide margin, and 20 conversion minutes a day is enough for audio.
Zamzar wins on delivery. Email conversion means you never hold the result. That is an odd idea until the file lives on a phone.
Submind is the wrong pick if you need video, documents, batch work or an API. It does audio only. Those are real limits, not small print.
Free vs paid: what the limits actually mean
“10 conversions per 24 hours” on Convertio is a rolling count of files, not minutes. Ten short audio files use it up, and video uses it faster.
“2 conversions a day” on Zamzar is the tightest free tier here. Two files, and the second one has to be under 50 MB.
“20 conversion minutes a day” on FreeConvert sounds small but is generous for audio, because an audio conversion usually finishes in seconds.
“10 credits a day” on CloudConvert is about ten minutes of processing, and a job cannot run longer than five. It is a handful of conversions, not a bulk run.
“2 GB” on Submind is about 34 hours at 128 kbps. The ten-hour duration cap arrives first, and neither costs anything.
Frequently asked questions
Yes. Submind converts audio in your browser, on your device, with no upload, no account and no daily quota. It handles ten audio formats. Convertio covers several hundred formats, including video, documents and CAD files, which is a different job.