---
title: "How to compress a video to a specific size | ToolSugar"
description: "Fit a video under a limit such as 10 MB or 25 MB. See how the target is turned into a bitrate and what to do when it cannot be met."
canonical: https://toolsugar.com/blog/how-to-compress-a-video-to-a-specific-size
image: https://toolsugar.com/og.png
---

# How to compress a video to an exact file size

Updated 2026-11-09

To compress a video to a specific size, type the limit in MB and let the tool work out a bitrate that fits your video's length. Compress to Size runs in your browser and checks the finished file in bytes, so you know it is under the limit before you upload. This guide covers the steps and what to try when a target is too small.

[Open Compress to Size](https://toolsugar.com/tools/compress-video-to-size)

## Compress a video to a set size in four steps

The video can be up to 120 MB on a computer, or 60 MB on a phone. The result is an MP4 with H.264 video and AAC audio.

1. Choose a video up to 120 MB, or 60 MB on a phone.
2. Pick a common limit or type your own size in MB.
3. Turn on Remove the audio to save more space if you need more room for the picture.
4. Press the button that reads Compress to and your size, keep the tab open, and download the MP4.

## How a size becomes a bitrate

A file size is bitrate multiplied by time. The tool turns your target into bits and divides by the video's length. It holds back about 4 percent for container overhead, gives the audio a share of what remains, and gives the rest to the picture.

A ten minute video and a one minute video aimed at the same 25 MB get very different bitrates. The longer one gets one tenth of the data per second, so it looks worse.

## Why the size is exact and how retries work

An encoder aims at a bitrate but lands near it, not on it. After each attempt the tool measures the file. If it is over, it tries again at a lower bitrate, up to three attempts in all. A size counts 1 MB as 1,000,000 bytes, which matches how most upload forms count.

## What happens to the resolution

Spreading a small bitrate over a large picture produces blocks. When the bitrate is low, the tool chooses a smaller resolution so the picture stays cleaner. To keep a higher resolution at the same size, trim the video first so the same data covers fewer seconds.

## When the target is too small

Video below 50 kbps is not usable, so the tool stops there and reports that the target is too small. You get a message and no file. Raise the limit, switch on Remove the audio, or cut the video shorter and run it again.

## Questions

### What size should I choose for email?

Check the attachment limit of your mail service and enter a number a little under it. Many services count the whole message, so a small margin keeps the email from bouncing.

### Will the video lose sound if I compress it to a size?

Only if you turn on Remove the audio. Otherwise the sound stays and is saved as AAC.

### Is this different from Compress Video?

Yes. Compress Video offers quality presets and you see the size afterwards. Compress to Size starts from the size you need and works backwards.

[Open Compress to Size](https://toolsugar.com/tools/compress-video-to-size)

## Related guides

- [How to compress a video without losing quality](https://toolsugar.com/blog/how-to-compress-a-video)
- [How to trim a video without re-encoding](https://toolsugar.com/blog/how-to-trim-a-video)
- [How to remove audio from a video](https://toolsugar.com/blog/how-to-remove-audio-from-a-video)
- [How to convert a video to MP4](https://toolsugar.com/blog/how-to-convert-a-video-to-mp4)