Hey Aspirant!

IIT Delhi was the highest-ranked IIT internationally, ranking 172nd in the QS World University Rankings of 2018, followed by IIT Bombay (179th), while 3 other IITs (IIT Madras at 264, IIT Kanpur at 293 and IIT Kharagpur at 308) make the top 310.

In the 2019 QS World University Ranking, IIT Bombay ranked highest at 162, followed by IIT Delhi (172), IIT Madras (264), IIT Kanpur (283), IIT Kharagpur (295), IIT Roorkee (381) and IIT Guwahati (472).

Hope it helps you.

Best of luck!