Audio File Size Calculator
Estimate a compressed audio file's size from bitrate and duration.
Quick answer: enter your details below and click Estimate File Size — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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Enter your details below.
How to use
- Enter your values in the fields provided.
- Click Estimate File Size.
- Read the result and adjust an input if you want a different outcome.
About this tool
Streaming and downloads care about bitrate, not just length. Enter a bitrate in kilobits per second and a duration in minutes, and this tool estimates the file size in megabytes.
Frequently asked questions
What do I enter to get a result?
Fill in every field with your own numbers or choices, then run the tool. Empty number fields count as zero, so check them before you trust the output.
Can I reuse this result elsewhere?
Yes. The result is calculated in your browser from the values you entered, so you can copy the numbers into your own notes or plan.