Yes yes, you can always use an IPv4 calculator to determine the IPv4 subnet addresses, and most of these are free.
If you want to dig deeper into how IPv4 subnetting works, check out how I have always done this by hand. My method is extremely helpful in certification classes, interview questions/tests and for anyone who is either troubleshooting or designing IPv4 networks.
I have used the following method to fully understand IPv4 address subnets since I was first introduced to IPv4.
Grab a couple of pieces of paper and lets dig in:
I hope you enjoyed that, please feel free to comment below and tell me how this helped you.