Audio File Size Calculator: How Big Is That Track at Your Bitrate?
Higher bitrates sound better and take more space. This calculator turns bitrate and length into a file size you can plan around.
What is the Audio File Size Calculator?
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.
How to use it
- Enter your values in the fields provided.
- Click Estimate File Size.
- Read the result and adjust an input if you want a different outcome.
Worked example
A 3-minute track at 320 kbps is about 7.2 MB.
How big is a 3-minute track at 320 kbps?
Three minutes is 180 seconds, and 320 kilobits per second over 180 seconds gives 7.2 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.