M Countdown Mnet · 2012–2026 · 461 #1s

Records run from 2012-01-05 to 2026-09-17 across 15 years; 163 artists and 434 songs have won. Of 2,590 wins across all six shows, M Countdown accounts for 18%. Recent yearly counts: 27 in 2026, 28 in 2025, 26 in 2024, 24 in 2023, 31 in 2022; the busiest year was 2019 with 39.

The heatmap lays out the 52 weeks of 2026 in one row; a run of the same colour means the same artist won consecutive weeks, and grey marks weeks with no broadcast or no compiled result. Each date opens an episode page with that week's other shows, the song's cumulative wins and its karaoke numbers.