I ask the question because I'd always thought that there was a standard (i.e. hole size 35mm, 5mm from door edge for the normal kitchen cabinet 18mm overlay hinges with fitting holes 32mm from edge and 45mm apart) but I've just ordered some Salice hinges and the main fitting is the normal 35mm diameter but the securing holes are closer to the edge (28.5mm not 32) and at 48mm spacing (not 45).
Normally buying and fitting any brand would not be an issue if the sizes were 'bespoke' , but my wife had asked me to change the blum clip on hinges on one kitchen cabinet from 110degree opening to 'fully open' - so I had added two appropriate 165 degree soft close Salice hinges and mounts to a bigger order I had for some understair storage drawer runners and clip-on hinges for a single coat storage door. I had included the mounts as I suspected clip on would be vendor specific. Today I went to swap the kitchen door hinges and realised that it was not a straight swap hence the question. The salice holes are hard to redrill as the current ones are too close.
Looking online it seems that most suppliers (that show fitting instructions) follow the blum dimensions, but I can't find anywhere that states a standard - it appears that 'euro hinge' is a generic description.
After a fair amount of research this evening I've found the equivalent 170degree blum hinges that will clip on and be a direct fit, but at double the cost (including small order P&P).
I'll start a thread on the understairs storage at the weekend.
Dave