Video file size calculator
Estimate file size from duration and combined video and audio bitrate.
- Free
- No account
- Runs in your browser
Sizes use decimal units: 1 MB is 1,000,000 bytes. Container overhead is not included.
Runs on your device. Nothing is uploaded.
Your result
Type your numbers, then press Calculate.
Planning an upload?
The Studio free plan takes recordings up to 2 GB, so most files go as they are.
How to use the video file size calculator
- Type your numbersEach box says which unit it wants.
- Press CalculateThe answer shows with the method, so you can check it.
- Keep the answerDownload it as a short text file to keep with your project.
Before you start
How is it worked out?
The method is shown under each answer, so you can check the sum yourself.
Is anything uploaded?
Calculations run on your device. Estimates use the inputs you enter; they are not measurements of an actual upload or export.
How exact is it?
As exact as the numbers you type. Real files and connections vary a little.
Is it free?
Yes, with no account. Copy or download the answer as often as you like.
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Find a proportional height or width for a chosen frame shape.
Timecode calculator
Convert a duration to frames and non-drop-frame timecode.
Speaking time calculator
Estimate speaking time for your script at a chosen words-per-minute pace.
Guides for this task
All articlesCompress video without losing readable text
Reduce resolution and encoding size, then judge the downloaded file instead of trusting a quality label.
Read the guide Guide · Before you uploadThe recording is too big to upload
A one-hour interview can be several gigabytes. The upload fails at the end.
Read the guideSkip the planning and send the recording.
Upload the raw recording. Studio cuts the ums, retakes and long pauses, adds captions and makes short clips. 30 free minutes, no card.