audio file size, sample count, bitrate, storage and recording-time calculators
Calculate the numbers behind digital audio
Estimate file size, recording duration, sample count and storage needs from bitrate, sample rate and channel assumptions.
Tools
Compressed Audio File Size
Estimate file size from total bitrate and duration.
Open →ToolsUncompressed PCM Size
Estimate raw PCM data size from sample rate, bit depth, channels and duration.
Open →ToolsSample Count
Calculate samples per channel from sample rate and duration.
Open →ToolsRecording Time from Storage
Estimate how long compressed audio can fit into a storage allowance.
Open →ToolsAudio Library Storage
Estimate storage for many equal-duration tracks at a chosen bitrate.
Open →Guides
How bitrate determines compressed file size
For a fixed bitrate, file size is proportional to duration.
GuidesWhat drives uncompressed PCM size
Sample rate, bit depth, channels and duration all multiply together.
GuidesCalculate sample count from duration
Sample count is useful when aligning audio with time-based processing.
GuidesPlan storage for an audio library
Average track duration and bitrate can provide a simple capacity estimate.
GuidesPlan recording headroom
Do not fill a recording medium to its theoretical maximum.