I want to make 6 bit counter using t flip flop, but i con't find the ic number of t flip flop. dose i use d flip flop and inverter to form t flip flop.
I think you are referring to a toggle flip flop, the input to these flip flops are usually labeled CLK. Most flip flop chips have it. Be sure to ground the unused inputs of any chip you want to try out this way.
Most simple flip flop chips are two flip flops in one package. You can also get packages prewired as a 4 bit counter (aka mod4). I wouldn't doubt that there are bigger, though I haven't looked in a long time.