Context :

Aims : This article aims to measure the age of planet-hosting stars ( SWP ) through stellar tracks and isochrones computed with the PA dova & T R ieste S tellar E volutionary C ode ( PARSEC ) .

Methods : We developed algorithms based on two different techniques for determining the ages of field stars : isochrone placement and Bayesian estimation .
Their application to a synthetic sample of coeval stars shows the intrinsic limits of each method .
For instance , the Bayesian computation of the modal age tends to select the extreme age values in the isochrones grid .
Therefore , we used the isochrone placement technique to measure the ages of 317 SWP .

Results : We found that \sim 6 \% of SWP have ages lower than 0.5 Gyr .
The age distribution peaks in the interval [ 1.5 , 2 ) Gyr , then it decreases .
However , \sim 7 \% of the stars are older than 11 Gyr .
The Sun turns out to be a common star that hosts planets , when considering its evolutionary stage .
Our SWP age distribution is less peaked and slightly shifted towards lower ages if compared with ages in the literature and based on the isochrone fit .
In particular , there are no ages below 0.5 Gyr in the literature .

Conclusions :