The total width of the frequency band that is available to or used by a communication channel; usually expressed in Hertz (Hz). ( RFC 3753) (Compare: channel capacity)
Bandwidth commonly refers to:
- Bandwidth (signal processing) or analog bandwidth, frequency bandwidth, or radio bandwidth, a measure of the width of a frequency range
- Bandwidth (computing), the rate of data transfer, bit rate or throughput
- Spectral linewidth, the width of an atomic or molecular spectral line
Bandwidth may also refer to: