I am about to start riding a compact crankset.. (after quite a few years on a standard 52-39)

I will a have a 50/34 chain ring with 11-23 cassett 10 spd..

in terms of gear inches... what is the equal gear in a 39 chainring to a 34 -23 (34 chain ring and 23 cog).

it seems to me ..that a 39- 26 gear would have about the same gear inches as a 34 23 but I a math idiot.. who knows what would be the closest to the 34-23?