How long does it take to install Windows 10?

In my experience, installing Windows 10 usually takes about an hour to complete. However, the process can vary depending on factors like your computer's speed, internet connection, and existing data on your device. I've found that a clean install on a new, fast computer can take as little as 30 minutes. On the other hand, upgrading an older device with lots of files and programs might take a couple of hours. Overall, it's best to set aside at least an hour or two to ensure a smooth installation process.