Video Bitrate Calculator — File Size to Bitrate Free
Exporting for WhatsApp, email or a slow connection? Enter your video length and the file size you need, and get the exact total bitrate to set in your editor — split into video and audio.
Video Bitrate & File Size Calculator
Enter video length and target file size — get the total bitrate to set in your editor, split into video + audio.
- Total bitrate
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- Video bitrate
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- Verdict
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How to use it
- Check your clip's length with the Video Inspector.
- Enter the size limit (WhatsApp ≈ 16 MB, email ≈ 25 MB).
- Set the video bitrate shown in HandBrake or your editor and export.
Frequently asked questions
What bitrate looks good for 1080p?
Roughly 8,000–12,000 kbps for uploads; below about 2,500 kbps expect visible softness. The calculator flags very low results.
What is the formula used?
Total bitrate (kbps) = target size in MB × 8,000 ÷ duration in seconds. Video bitrate is total bitrate minus your audio bitrate.
Why is my video too big for WhatsApp?
WhatsApp limits videos to about 16 MB. Use the calculator to find the bitrate that fits, or trim the clip first.
Does bitrate affect quality?
Yes. Higher bitrate keeps more detail; lower bitrate saves space but adds blockiness, especially in fast-moving scenes.
Related tools
More free tools from ToolsOwl — all browser-only, all safe.
This tool never downloads other people's Facebook, TikTok or Instagram videos. It works only on files and text you provide. See our official download-your-own-video guide.