https://www.raspberrypi.org/downloads/
There are currently versions for MacOS, Windows, and Ubuntu. This is an incredibly simple tool that replaces the need for third party tools like Etcher or Rufus.
It took me all of 10 minutes to get my backup PiHole back online after decommissioning it for a short while to do other things.
Make sure to mount the newly created SD card and 'touch ssh' to enable ssh access before moving it to the Pi and starting it up.
