3GP to WebM Converter

How to Convert 3GP to WebM Online

1. Upload Your 3GP File: Drag and drop or click "Add Files" to select 3GP or 3G2 files. Old Nokia / Sony Ericsson / Motorola feature-phone recordings (2003-2012), MMS attachments, voicemail clips, and dumbphone camera captures all work. Batch is supported — drop in a whole folder backed up off an old phone.
2. Pick a Video Codec and Quality: Default is VP9 (Google's modern web video codec). Choose AV1 for the smallest output on 2022+ devices, or VP8 for legacy compatibility back to the original 2010 WebM spec. Set a quality preset (Highest -> Lowest), target a percentage of the original size or an exact size in MB, or fine-tune with CRF on the VP9 / AV1 scale (15 = visually lossless, 30 = default for web, 36 = small).
3. Set Resolution and Audio (Optional): 3GP source is typically 176x144 (QCIF), 320x240 (QVGA), or 352x288 (CIF) — pick a resolution preset (Original / 360p / 480p / 720p) or scale by percentage. Default audio is Opus; switch to Vorbis for older WebM tooling. Trim the clip with start time + duration in HH:MM:SS.sss format to drop the dead lead-in feature phones often record before the actual footage.
4. Convert and Download: Click Convert. Files process in your browser session — no sign-up, no watermark, no upload to a third-party server.

Why Convert 3GP to WebM?

3GP (3GPP Multimedia File) was designed for 3G UMTS phones in 2001 and ruled the feature-phone era from roughly 2003 to 2012 — Nokia N-series, Sony Ericsson Walkman phones, BlackBerry, early Motorola RAZR. It uses H.263 or low-profile H.264 video plus AMR-NB or AAC-LC audio in a stripped-down MP4 container tuned for 64-128 kbps cellular networks. WebM (VP9 / AV1 / VP8 video, Opus / Vorbis audio) is the open-source format Google designed in 2010 specifically for HTML5 <video> tags. It's royalty-free, plays in every modern browser, and embeds cleanly without a plugin. Common reasons to convert 3GP -> WebM:

• Embedding old phone footage on a personal website — That folder of 3GP clips off a 2007 Nokia N73 or RAZR V3 won't play in any browser. Re-encoded to WebM, the same footage embeds in a personal site or family archive page with a single <video src="2008-trip.webm"> tag.
• HTML5 <video> without YouTube — Browsers will not play .3gp natively. WebM is the de-facto open web format — the <source type="video/webm"> tag works in Chrome, Firefox, Edge, Opera, and Safari 14.1+ with no plugin and no third-party hosting.
• Royalty-free codec for commercial sites — H.263 and H.264 inside 3GP are patent-encumbered. WebM (VP8 / VP9 / AV1) has no licensing fees, which matters for paid platforms, embedded video in apps, and commercial streaming.
• Background loops and hero videos — A muted, autoplaying clip behind a landing-page hero needs to be small and load instantly. VP9 / AV1 in WebM is more efficient than the H.263 inside most 3GP files, so the encoded WebM is usually smaller at higher visual quality.
• Open-source toolchain compatibility — Static site generators (Hugo, Jekyll), CMS plugins, and players like Plyr and Video.js handle WebM natively. Many stumble on the 3GP container because it's effectively obsolete on the desktop side.
• Long-term archival in an open format — 3GP is dead. Phones moved to MP4 / HEVC in 2012 and the codecs inside 3GP (H.263, AMR-NB) are increasingly poorly supported in modern players. WebM is actively maintained and royalty-free, making it a safer container for long-term web archives.

If you need device playback instead of web embedding, convert 3GP to MP4 — MP4 with H.264 plays everywhere, including iOS and Android natively.

3GP vs WebM — Format Comparison

Codec Choice for the WebM Output

Frequently Asked Questions

Will the video look better after converting to WebM?

No — and no online tool can fix this. The source 3GP was encoded at 64-256 kbps for 2G / 3G cellular networks at 176x144 or 320x240. Upscaling the resolution doesn't add detail, it just enlarges blurry pixels. The conversion preserves the source image quality in a modern royalty-free container that browsers can actually play. If you want it to look sharper on a modern screen, run a separate AI upscaler after converting to WebM.

Should I pick VP9, AV1, or VP8?

VP9 for almost everything — universal modern browser support, more efficient than the H.263 inside your 3GP, encodes fast in the browser. AV1 for the smallest possible files when audience is on 2022+ devices — encoding takes 5-10x longer but the file is roughly 30% smaller than VP9. VP8 only when targeting very old Android devices or extremely conservative legacy embed scenarios — rarely needed in 2026.

Why is my converted WebM bigger than the original 3GP?

3GP files are extremely small because they target cellular bandwidth — a 2-minute clip is often 2-5 MB. WebM at default quality reserves more bitrate for video and audio, so the output may be 4-10 MB. Drop the quality preset to "Low" or set a target file size in MB if you need to match the original 3GP footprint. This is normal — you're trading bitrate for browser compatibility, not the other way around.

Will Safari play my WebM?

Safari 14.1+ (macOS Big Sur, iOS 14.5+) plays WebM with VP9. For older Safari, embed both formats in your <video> tag — WebM first, MP4 fallback second. Modern Safari picks the WebM; older Safari falls back. See 3GP to MP4 for the fallback file.

Does the converter work for 3G2 files too?

Yes. 3G2 is the CDMA cousin of 3GP — used by Verizon, Sprint, US Cellular, and KDDI au feature phones. The container layout is nearly identical, just with codec preferences tuned for CDMA networks (typically QCELP voice instead of AMR-NB). Drop 3G2 files into the same upload area; they convert to WebM with the same options.

Will the AMR-NB audio survive the conversion?

Yes, with caveats. 3GP files typically use AMR-NB (narrowband, 8 kHz, 4.75-12.2 kbps) for voice or AAC-LC for music. Both are re-encoded to Opus (default for WebM) or Vorbis. Voice clarity is preserved, but no online tool can recover the high frequencies AMR-NB threw away during the original encode — a phone-call-quality voice clip will still sound like a phone-call-quality voice clip after conversion.

Can I trim part of a 3GP clip while converting?

Yes. Use the trim section to enter a start time and duration. Both accept seconds (12.5) or HH:MM:SS.sss (00:00:30.500). Trimming first means the encoder does less work and the output is smaller. Useful for cutting the 1-2 seconds of dead air feature phones often record before the actual footage starts.

What's the file size limit?

XConvert handles large 3GP collections including entire folders backed up off old phones. Conversion happens in-browser, so the practical limit is your device's available memory. No fixed cap, no quantity limit on batch jobs, no watermark.

Why convert to WebM instead of MP4?

WebM is the open, royalty-free format purpose-built for HTML5 <video> tags — ideal for self-hosting on a personal site or commercial web app where H.264 licensing matters. MP4 with H.264 is more universal across devices (iOS, Android, smart TVs, set-top boxes). For pure web embedding, WebM is the cleaner pick; for device playback or sharing via iMessage / WhatsApp, convert 3GP to MP4 instead.