Convert MP4 to 3GP
Convert MP4 to 3GP in batches online for older mobile phones. Adjust resolution and quality before downloading. Free, no sign-up or watermark.
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Convert MP4 to 3GP in batches online for older mobile phones. Adjust resolution and quality before downloading. Free, no sign-up or watermark.
MP4 is commonly used for widely compatible playback, sharing, and web delivery. 3GP is a practical output for older mobile devices and bandwidth-conscious sharing.
Changing containers or codecs can affect file size, compatibility, and quality. 3GP uses MPEG-4 / Xvid for reliable output.
Process an occasional batch without a watermark or account. Create a free account to save one setup as a recipe, or upgrade for more recipes and automatic delivery to Google Drive or Dropbox.
Choose 3GP when the receiving phone or legacy application specifically requests that format. It is a compatibility option for older mobile workflows, not a general upgrade over MP4. For a modern phone, browser, or publishing platform, keeping a compatible MP4 is usually the more practical choice.
A .3gp extension alone does not guarantee playback. The phone may impose limits on dimensions, frame rate, video codec, audio codec, and file size. Check its documentation before converting a full batch.
A small legacy screen rarely benefits from a large source resolution. Select dimensions the device supports and preview small text and motion after conversion instead of assuming a smaller file is always readable.
Encoding for older devices can discard visual and audio detail. Retain the original MP4 so that future deliveries can use a modern format without starting from an already reduced 3GP copy.
FastConvert uses MPEG-4 video for 3GP output. Convert one short sample with conservative dimensions and play it on the actual receiving device. Save the tested settings as a recipe only after both picture and sound work.
Convert up to 2 files per batch, 100 MB each, within the Free allowance of 20 conversions per 24 hours. No account is needed for a free conversion. Save one recipe with a free account to reuse the same settings for the next batch. Paid plans add more recipes, larger batches, and automatic cloud delivery. See the batch limits and cloud delivery plans.
Your current plan is Free.
Basic unlocks 4 files per batch, 300 MB per file, and 10 minutes of processing time. Compare plans