Video bitrate calculator.
Estimate how big a video file will be from its bitrate and length. Or flip it: start from a target file size and get the bitrate to encode at. Runs in your browser, nothing is uploaded.
Includes a standard 192 kbps audio track on top of the video bitrate. Actual size varies a little with the encoder and container.
A standard 192 kbps audio track is already subtracted from the budget, so this is the video bitrate to set in your encoder.
Suggested delivery bitrates
Good starting points for H.264 web delivery. Use the low end for talking heads, the high end for fast motion.
| Resolution | Suggested bitrate |
|---|---|
| 720p (HD) | 5 to 8 Mbps |
| 1080p (Full HD) | 8 to 12 Mbps |
| 1440p (2K) | 16 to 24 Mbps |
| 4K (UHD) | 35 to 55 Mbps |
About this tool
Work out video file sizes before you export or upload. Enter a bitrate and duration to get the file size, or flip it: enter a target file size and duration to get the bitrate to encode at. Includes suggested bitrate ranges for common resolutions from 720p to 4K, so upload limits and delivery specs stop being guesswork.
How to use it
- Pick a mode: size from bitrate, or bitrate from a target size.
- Enter duration and either the bitrate or the size cap you need to hit.
- Read the result, and check the preset table for sensible bitrates per resolution.
Video Bitrate Calculator FAQ
What bitrate should I use for 1080p?
For online delivery, 8 to 12 Mbps looks clean for most content. Fast motion and fine detail sit at the top of that range.
How big is a minute of 4K video?
At a typical 45 Mbps delivery bitrate, about 340MB per minute. Halve the bitrate and you halve the size.
Does audio change the math?
A little. Audio is usually 128 to 320 kbps, a rounding error next to video. The calculator includes a standard audio allowance.
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