You cant go around converting completely different tests into scores... If I had to take a guess though a 26 would probably be around a 2000 give or take a 100.
Here's a helpful link
Basically, your 26 would be anywhere from a 1170-1200 on the old scale and 1760 on the new scale.
I can't say for sure, but according to this website, a 26 on the ACT is equal to 1760 on the new SAT.