Duration of H burning?

Does anyone know what is (roughly) the duration of the Hydrogen burning process
for the sun?

Wiki mentions an average lifespan of 10^10 years for sun-like stars, but this
includes the red-giant phase.

I am interested in knowing (roughly) when Hydrogen fuel gets exhausted as a
function of a sun-like star's lifespan, i.e. for stars with: Mass ~ M_{sol} and
Type ~ G2V.

Many thanks,
--
Ioannis