Try SCImago at https://www.scimagojr.com/journalsearch.php

I use it on a daily basis. For further info, look here:

https://www.researchgate.net/post/Is_impact_factor_of_Journal_differ_from_the_RG_score

Hi,

Impact factor is the World of Science indicator. The journal "public integrity" is already indexed in this database, but it is among the ESCI journals, that is, it is candidate for full inclusion in this database, but was not included yet.Altogether, this journal published 156 papers indexed in the WoS, but during 2016 and 2017 it published only 82 papers that were cited in 2018- 43 times. The calculation of the 2018 Impact Factor is done by dividing the citation of the last year by the sum of publications in the last two years (2016, and 2017), so the result is that the IF of this journal is 0.524.

thank you Avishag and Morris for your responses. They were really helpful.