After selling 25,000 copies and earning 68,000 album-equivalent units within three days, Heartbreak on a Full Moon debuted at number three on the US Billboard 200, becoming Brown's ninth consecutive top 10 album on the chart. The album was Brown's seventh album to debut at number one on the Billboard Top R&B/Hip-Hop Albums chart. In its second chart week, the album remained at number three on Billboard 200, with 73,000 album-equivalent units. By the end of 2017, Heartbreak on a Full Moon had accumulated 608,000 album-equivalent units in the United States, with 80,000 being pure sales. On January 18, 2018, Heartbreak on a Full Moon was certified Platinum by the Recording Industry Association of America for combined sales and album-equivalent units of over 1,000,000 units in the United States (in this case, 500,000 double album sets, which are double-counted by the RIAA). In Australia, it entered the ARIA Albums Chart at number five, becoming his first top ten in the nation since X in 2014. In the United Kingdom, the album debuted at number 10 on the UK Albums Chart, giving Brown his sixth top 10 album on the chart. In New Zealand, the album debuted at number three on the RMNZ Albums Chart, giving Brown his seventh top ten album on the chart.