Video Bitrate Size Estimator
Estimate file size from video and audio bitrates and duration.
Your inputs
Calculation results
Formula & assumptions
Bytes = total bitrate × seconds / 8; codec and container overhead can vary.
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Video Bitrate Size Estimator
Estimate file size from video and audio bitrates and duration.
- Enter video bitrate, audio bitrate, duration, container allowance using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Video bitrate: 8 megabits per second Audio bitrate: 192 kilobits per second Duration: 10 minutes Container allowance: 2 percent Media size · MB: 614.4 Estimated file · MiB: 597.65625
Questions & answers
What does Video Bitrate Size Estimator calculate?
Estimate file size from video and audio bitrates and duration.
Which units should I enter?
Video bitrate uses megabits per second. Audio bitrate uses kilobits per second. Duration uses minutes. Container allowance uses percent. Convert values to these units before calculating.
Which formula does it use?
Bytes = total bitrate × seconds / 8; codec and container overhead can vary.
What does the included example show?
Video bitrate: 8 megabits per second; Audio bitrate: 192 kilobits per second; Duration: 10 minutes; Container allowance: 2 percent. Result: Media size · MB = 614.4; Estimated file · MiB = 597.65625.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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