Just for future reference, a Mac can read NTFS drives but can't natively write to them. There are third party drivers that make that possible, "Paragon NTFS for Mac" is cheap and I've found it works OK for me.
MacOS can read and write to FAT or exFAT formated drives.
Windows can't natively read the Mac file system, but again there are third party drivers that can. Though the next MacOS release, High Sierra, promises a new file system to replace the aging current MacOS one, so what will happen when that's rolled out remains to be seen. If in doubt, FAT or exFAT is the way to go.