Sample Rate Calculator
Calculate audio file sizes and durations based on sample rate, bit depth, and channels. View technical specifications like Nyquist frequency and dynamic range.
Sample Rate Calculator
Calculate audio file sizes, durations, and technical specifications for different sample rates and bit depths.
Quality Presets
Technical Specifications
Nyquist Frequency
22.1kHz
Dynamic Range
96.3dB
Signal-to-Noise Ratio
98.1dB
Max Frequency
22.1kHz
Notes:
- File sizes are for uncompressed PCM audio (WAV format)
- Compressed formats (MP3, AAC) are typically 5-10x smaller
- Nyquist frequency is the maximum frequency that can be represented
- Human hearing range is approximately 20 Hz - 20 kHz
How to Use
- 1Choose calculation mode — Select whether to calculate file size from duration or duration from file size.
- 2Set audio format — Choose sample rate, bit depth, and number of channels, or use a preset.
- 3Enter your value — Input the duration or file size depending on your selected mode.
- 4View results — See the calculated file size or duration along with technical specifications.
- 5Check specs — Review Nyquist frequency, dynamic range, and SNR for your settings.
Frequently Asked Questions
What sample rate should I use?
44.1 kHz (CD quality) is sufficient for most music. 48 kHz is standard for video. Higher rates like 96 kHz or 192 kHz are used for professional recording and archival, but offer diminishing returns for playback.
What is bit depth?
Bit depth determines the dynamic range (difference between quietest and loudest sounds). 16-bit provides 96 dB of range (CD quality). 24-bit provides 144 dB, useful for recording to allow headroom.
What is the Nyquist frequency?
The Nyquist frequency is half the sample rate and represents the highest frequency that can be accurately captured. At 44.1 kHz, the Nyquist frequency is 22.05 kHz, above human hearing range.
Why are compressed files so much smaller?
Compressed formats like MP3 and AAC use psychoacoustic models to remove sounds humans cannot easily perceive. This can reduce file size by 5-10x with minimal perceived quality loss.
What is dynamic range?
Dynamic range is the ratio between the loudest and quietest sounds that can be represented. It is approximately 6 dB per bit, so 16-bit audio has about 96 dB of dynamic range.