As others mentioned, antennaweb and tvfool are great resources.
Note that there is a presumption in antenna sales and designs to only design/sell UHF antennas. Check the above sites, you may still need to receive VHF signals.
Antennas designed in 1954 will work better than most of the UHF only antennas; square panels, flying saucers, built today.
TV stations now use, in most cases, virtual channels. For example in the Lansing market:
WKAR 23 is on RF channel 40
WLAJ 53 is on RF channel 24
WLNS 6 is on RF channel 36
WSYM 47 is on RF channel 38
and
WILX 10 is on RF channel 10 (still on VHF)
Converter boxes will work. I've found them at thrift shops for $10.
We bought convertor boxes initially as we had two tvs that were not digital.