Hpcalc.org is tracked by us since April, 2011. Over the time it has been ranked as high as 72 199 in the world, while most of its traffic comes from USA, where it reached as high as 209 888 position. It was owned by several entities, from Eric Rechlin HP Calculator Archive to Eric Rechlin, it was hosted by Rice University, Akamai Technologies Inc. and others.

Hpcalc has a high Google pagerank and bad results in terms of Yandex topical citation index. We found that Hpcalc.org is poorly ‘socialized’ in respect to any social network. According to MyWot and Google safe browsing analytics, Hpcalc.org is a fully trustworthy domain with no visitor reviews.