Free Audio File Size Calculator
Calculate file sizes for WAV, MP3, FLAC, and other audio formats. Estimate storage costs, transfer times, and compression ratios. Perfect for podcasters, musicians, and content creators planning their storage and delivery needs.
Audio File Size Calculator
Calculate file sizes for different audio formats and get platform-specific recommendations for optimal delivery.
Audio Parameters
Audio Format
How to Use This Calculator
- 1Enter the duration of your audio in seconds
- 2Select your sample rate (44.1kHz for CD, 48kHz for professional)
- 3Choose bit depth (16-bit for CD, 24-bit for professional)
- 4Select number of channels (mono, stereo, surround)
Common Delivery Formats
WAV (Uncompressed)
Highest quality, largest file size. Used for archiving and professional delivery.
MP3 320 kbps
High quality compression. Good balance of quality and file size.
MP3 128 kbps
Standard quality compression. Smaller file size, acceptable quality.
AAC 256 kbps
Modern compression format. Better quality than MP3 at same bitrate.
When to Use This Tool
- •Planning storage requirements for large projects
- •Estimating upload times and bandwidth needs
- •Choosing appropriate delivery formats for clients
- •Budgeting for cloud storage or backup solutions
Pitfalls to Avoid
- •Not accounting for metadata and file headers
- •Underestimating storage needs for long-form content
- •Choosing wrong format for delivery platform
- •Not considering multiple versions or backups
Need Help with File Delivery?
Our services include proper file formatting and delivery to your specifications. We handle all the technical details so you can focus on your content.
Send Your FilesFrequently Asked Questions
How accurate is this file size calculator?
Our calculator provides accurate estimates based on standard audio format specifications. Actual file sizes may vary slightly due to metadata, compression efficiency, and encoding settings.
What's the difference between WAV and MP3 file sizes?
WAV files are uncompressed and much larger (about 10MB per minute for stereo 44.1kHz/16-bit). MP3 files are compressed and much smaller (about 1-2MB per minute depending on bitrate). FLAC provides lossless compression, falling between the two.
How much storage do I need for a podcast?
For a 1-hour podcast episode: WAV files need ~600MB, MP3 at 128kbps needs ~60MB, and FLAC needs ~300MB. Consider your hosting platform's requirements and your audience's download preferences when choosing formats.
What's the best format for music distribution?
For streaming platforms, use the format they prefer (usually MP3 or AAC). For archiving and professional delivery, use WAV or FLAC. For maximum compatibility, MP3 at 320kbps provides excellent quality with reasonable file sizes.
How do I reduce audio file sizes?
Use compression formats like MP3 or AAC, reduce bitrate (but maintain quality), use mono instead of stereo for voice-only content, and consider the target platform's requirements. Always test quality before final delivery.