Australian Prime Minister Tony Abbott struck a conciliatory tone on Thursday after speaking with Indonesian President Joko Widodo about the looming execution of two convicted Australian drug traffickers.

Abbott said he spoke with his "friend" Widodo on Wednesday evening, adding that the Indonesian leader "absolutely understands our position ... and I think he is carefully considering Indonesia's position."

Widodo has denied clemency to 11 convicts on death row, including the Australian nationals, ratcheting up diplomatic tensions amid repeated pleas for mercy.