When to use this calculator
Stereo has two channels, so its uncompressed data rate is twice mono at the same sample rate and depth.
Explore the image, audio & video calculators for other questions in this topic. For a related calculation, use the Frame Count Calculator: Find frame count from constant frame rate and duration.
PUTTING IT INTO PRACTICE
Audio File Size: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Sample rate (Hz, integer) | 48,000 |
| Bits per sample (integer) | 16 |
| Channels (integer) | 2 |
| Duration (seconds) | 60 |
| Result | 11.52 MB |
- Check the input labels and enter the example values above.
- Apply the relationship: Size (MB) = sample rate × bit depth × channels × seconds/8,000,000.
- The result is 11.52 MB, rounded for display.
How to interpret your result
Excludes file headers, metadata and compression. Applies to constant-width PCM samples.
Uncompressed pixel and PCM estimates use a predictable data layout. Compressed media sizes depend on codec and content. Average encoded bitrate can estimate file size but does not by itself establish quality.
Frequently asked questions
Will an uncompressed image estimate match a JPEG file?
Usually not. JPEG uses compression, so its final size depends on the image and encoding settings.
When is the audio file size calculator useful?
Stereo has two channels, so its uncompressed data rate is twice mono at the same sample rate and depth.
How do I use the audio file size calculator?
Enter sample rate (hz, integer), bits per sample (integer), channels (integer), duration (seconds). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Size (MB) = sample rate × bit depth × channels × seconds/8,000,000.
What should I check before using the result?
Excludes file headers, metadata and compression. Applies to constant-width PCM samples.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
Calculators Map editorial process · Updated · Methods and limitations