Compress Video to 16 MB
about 31 seconds of comfortable 1080p or 56 seconds at 720p; it is the conservative WhatsApp in-chat target
No watermark and no installation. The compressor is preset below 16 MB so normal encoder variation still lands under the limit.
Drag and drop a video file to start
Checking your file limits…
Supported: mp4, webm, mov, mkv, avi, wmv and 33 formats in all
Where 16 MB comes from
This is WhatsApp’s in-chat video limit on phones — by convention rather than by publication. It is the least stable number on this site: WhatsApp’s own help page never states 16 MB, and instead documents a connection-dependent default of 100 MB at 720p, or 64 MB at 480p on a slower connection. That split is about your connection, not your device; the same page gives it for iPhone, Android and Web alike.
- WhatsApp — Video in chat (mobile)16 MB
The number that stops most in-chat video uploads from a phone.
How long a video fits in 16 MB
The longest clip each resolution can carry inside 16 MB. “Comfortable” means the bitrate clears what that frame size wants; “watchable” means it is soft but holds together. Both columns are arithmetic on the size and the duration; the thresholds they are compared against are recommendations, documented under the table below.
| Resolution | Comfortable up to | Watchable up to | Needs |
|---|---|---|---|
| 1440p | 14s | 23s | 9,000 kbps |
| 1080p | 31s | 61s | 4,000 kbps |
| 720p | 56s | 107s | 2,200 kbps |
| 480p | 116s(2 min) | 209s | 1,000 kbps |
| 360p | 180s(3 min) | 307s | 600 kbps |
Method: 16 MB spread over the duration, minus 128 kbps of audio and 2% container overhead, then compared against H.264 thresholds derived from published bitrate ladders and reduced by about a third for re-encoded source. A minute inside 16 MB leaves 2064 kbps for video, which is exact. Which resolution that is enough for is a recommendation, not a measurement.
What 16 MB buys at each length
The table above reads by resolution; this one reads by duration. Same arithmetic, the other way round — pick your clip length and see what is left to spend.
| Video length | Bitrate left for video | Resolution it carries | Verdict |
|---|---|---|---|
| 15s | 8,641 kbps | 1080p | Looks fine |
| 30s | 4,256 kbps | 1080p | Looks fine |
| 1 min | 2,064 kbps | 480p | Looks fine |
| 2 min | 968 kbps | 360p | Looks fine |
| 5 min | 310 kbps | 360p | Visibly rough |
| 10 min | 91 kbps | — | Visibly rough |
Method: the bitrate column is arithmetic — 16 MB spread across the duration, minus 128 kbps for stereo audio and 2% for container overhead. It is a hard ceiling, not an estimate. The resolution and verdict columns are a recommendation, derived from published H.264 bitrate ladders and pulled down about a third, because re-encoding footage that has already been compressed once survives lower bitrates than encoding a clean master does. Deliberately conservative — we would rather under-promise than tell you a video will look fine when it will not.
16 MB across lengths and resolutions
The left column is what you have to spend at each length; the cells are what each resolution needs. Green means you clear it comfortably, amber means it is watchable but soft, and grey means pick a smaller frame. Reading down a column shows how long a clip can get before that resolution stops being worthwhile on a 16 MB limit.
Source: Computed, not measured — no encoder was run to produce this figure · Method: 16 MB spread over the duration, minus 128 kbps audio and 2% container overhead. Thresholds come from published H.264 bitrate ladders, reduced by about a third for re-encoded source.
What goes wrong at 16 MB
WhatsApp re-encodes what you send, so 16 MB is not a quality target — it is an admission ticket. The file you upload is an input to their encoder, not the thing the recipient watches, and compressing to the visible edge of acceptable before handing it to a second lossy pass is how detail disappears. Leave headroom. If quality matters more than the inline preview, send it as a document instead: that path skips re-compression entirely and accepts files up to 2 GB.
How to compress a video to 16 MB
Drop the video in
The compressor is set to 15 MB so the result stays below the 16 MB limit.
Trim long footage first
At 16 MB, duration costs more than any quality setting. Halving the clip doubles the bitrate available to each remaining frame.
Download and inspect difficult frames
Check motion, faces and gradients at full size. These reveal compression damage before a thumbnail does.
16 MB compression FAQs
Can I compress a video to 16 MB?
Yes. Upload the video and use the preset exact-size target.
What quality fits in 16 MB?
Quality depends mainly on duration, motion and resolution; use the tables on this page to choose.
Why target below 16 MB?
Encoders can overshoot slightly, so the preset leaves headroom below a hard ceiling.
Will the result have a watermark?
No. VidSmaller does not add a watermark.
Other target sizes
Not one of these? Work out any size and length in the calculator — same arithmetic, plus what we measured at the bitrate it gives you.