Is there an easy way to tell if a motherboard will fit in a atx case?

Or is an atx motherboard pretty much the standard?, other than atx micro.Is there an easy way to tell if a motherboard will fit in a atx case?
atx cases will pretty much fit anything you want to in them. Is there an easy way to tell if a motherboard will fit in a atx case?
if the motherboards form factor is compatible with the supported form factors in a case.





But I never seen an atx case that can not fit atx motherboards and micro-atx motherboards.
ATX and ATX-Micro motherboards are standard, and will fit in any ATX case
any atx motherboard will fit into a atx case no matter if it's a standard atx board or a mini atx board