This tool converts the audio sampling rate in **Hz** (Hertz) to bit rate in **kbps** (kilo-bit-per-second).

**Background**

The human ear can listen to frequencies between 20 Hz and 20,000 Hz. An industry standard sampling rate of 44,100 Hz is used for audio. This frequency is more than 2 x 20 kHz (Nyquist rate) and therefore the digital samples are sufficient for waveform reconstruction.

Each sample of the ADC consists of a number of bits (called the bit depth). The greater the number of bits, the better the resolution.

**Formula**

**R _{kbps} = F_{s} * N_{ADC} * N_{channels}**

where

**R**is the bit rate_{kbps}**F**is the sampling rate in kHz_{s}**N**is the number of bits that represent each ADC sample_{ADC}**N**is the number of channels_{channels}

**Example Calculation**

Apple Lossless Audio Codec supports up to 8 channels of audio at 16, 20, 24 and 32 bit depth with a maximum sample rate of 384 kHz.

**At the highest bit depth and max rate the effective bit rate for ALAC is 98304 kbps or ~ 98 Mbps. **

FLAC by comparison supports up to 8 channels of audio at a max bit depth of 32 and max sampling rate of 655,350 Hz.

**At the highest bit depth and max rate the effective bit rate for FLAC is 167769.6 kbps or ~ 168 Mbps.**