Video Bitrate Calculator

Estimate video file size from duration and bitrate, or bitrate from target size.

Duration (minutes):

Video bitrate (Mbps):

Audio bitrate (kbps):

Target size (GB, optional):

–File size

–Bitrate for target

How to use

Enter duration and bitrates — file size appears; or set a target size to get the bitrate; everything runs in your browser.

How is file size computed?

Size = (video bitrate + audio bitrate) × duration ÷ 8.

What bitrate for 1080p?

Roughly 8–12 Mbps for H.264 streaming, 35–45 Mbps for high-quality archival.

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