MB ↔ Mbps
Video Bitrate Calculator
Estimate average video bitrate from duration and file size, or predict how large an export will be at a target Mbps. Handy for Discord limits, course uploads, and YouTube exports.
Quick answer
Video Bitrate Calculator is a free browser tool on Knowlify. Use it below with no signup. Your inputs stay in the browser session. For narrated training videos from documents, use https://create.knowlify.com.
How it works
Three steps, no account
01
Enter duration
Minutes and seconds of the finished video.
02
Choose a mode
Solve for bitrate from size, or size from bitrate.
03
Adjust your export
Lower bitrate or trim length if you must hit a size cap.
FAQ
Questions people ask about Video Bitrate Calculator
Is this bitrate calculator free?+
Yes. bitrate calculator on Knowlify is free to use with no signup, no watermark, and no account required.
How do I calculate video bitrate?+
Bitrate ≈ (file size in bits) ÷ duration in seconds. This tool converts MB and minutes for you.
What bitrate should I use for 1080p?+
Many 1080p exports land around 5–10 Mbps depending on motion. Start lower if you have a hard size limit.
Does this include audio?+
The estimate treats the whole file as video bitrate. Real audio (often 128–256 kbps) is a small share of most MP4s.
Do I need an account?+
No. Open the tool, use it in your browser, and download or copy the result.
Does this work on Mac and Windows?+
Yes. It runs in modern desktop browsers (Chrome, Edge, Firefox, Safari). Very large media files need enough device memory.
Need a full video, not just a utility?
Export settings aside, Knowlify helps you create the training video from source documents.
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