Choose direction
Pick target bitrate or estimated file size.
FREE VIDEO BITRATE CALCULATOR
Free Video Bitrate Calculator
Calculate bitrate for a target size or estimate the encoded file size in either direction.
Only the numbers you enter are calculated in this browser; no file is needed.
- 1Choose calculation
- 2Calculate in browser
- 3Use result
1 · Choose calculation
What do you want to calculate?
3 · Use result
Bitrate calculation result
Choose a mode and enter values to see the required bitrate or estimated size.
- Target file size
- Total bitrate
- Video bitrate
- Audio bitrate
- Estimated size per minute
This is an estimate. Container overhead, VBR, codec and encoder behavior can change the actual file size.
FREE BITRATE GUIDE
Plan video size in three steps
Calculate for free without a file upload or account.Enter values
Add duration, size or bitrate, and audio bitrate.
Use result
Use the video bitrate as an encoder reference.
VIDEO SIZE AND BITRATE
Why equal-length videos can have different sizes
Total bitrate and duration determine the estimated file size.
Double time, double size
At the same bitrate, size grows with duration.
Reserve audio
Audio bitrate is removed from the total target budget.
An estimate
VBR and container overhead can change the real size.
FREE VIDEO BITRATE CALCULATOR FAQ
Video bitrate calculator questions
Free use, units and estimate limits.1Is the video bitrate calculator free?
Yes. It is free without an account or usage limit and calculates locally in your browser.
2Are MB and Mbps the same?
No. MB measures file size and Mbps measures bits per second. This calculator uses decimal MB/GB and kbps/Mbps.
3Why subtract audio bitrate?
A target file contains video and audio, so the audio share must be removed to find the video setting.
4Will the encoded file match exactly?
Not always. Container overhead, VBR, codec and encoder behavior can slightly change the actual size.