Audio / Video

Video Bitrate & File Size Calculator

Estimate video file size from bitrate, or the bitrate to hit a target size.

Audio / Video

Local only

CalculateDuration (minutes)Video bitrate (kbps)Audio bitrate (kbps)Target size (MB)

Everything stays in your browser

Your text is processed on your device — nothing is uploaded to a server.

How it works

Size = (video + audio bitrate) × duration ÷ 8, with ~2% container overhead.

Good to know

How do I use it?

Fill in the options and press “Calculate”. Check the result, then copy or download it.

How does it work?

Size = (video + audio bitrate) × duration ÷ 8, with ~2% container overhead.

Is my data uploaded?

No. Everything is processed in your browser and nothing is sent to a server. No account is needed.