How Often Do Typical PoW Networks like Bitcoin Adjust Their Mining Difficulty?

Bitcoin, the most prominent PoW network, adjusts its mining difficulty approximately every two weeks, or precisely every 2,016 blocks. This adjustment period is designed to maintain an average block time of ten minutes.

Other PoW coins may have much shorter or more frequent adjustment periods, sometimes every block, depending on their specific protocol design. The frequency is a key parameter for network stability, especially when facing large fluctuations in hashrate.