# List of Billboard Digital Song Sales number ones of 2018

The Billboard Digital Song Sales chart is a chart that ranks the most downloaded songs in the United States. Its data is compiled by Nielsen SoundScan based on each song's weekly digital sales, which combines sales of different versions of a song by an act for a summarized figure.

## Chart history

Key :
| † | Indicates best-performing single of 2018 |
| Issue date | Song | Artist(s) | Weekly sales |
| January 3 | "Perfect" † | Ed Sheeran and Beyoncé | 151,000 |
| January 6 | "Perfect" † | Ed Sheeran and Beyoncé | 163,000 |
| January 13 | "Perfect" † | Ed Sheeran and Beyoncé | 109,000 |
| January 20 | "Perfect" † | Ed Sheeran | 98,000 |
| January 27 | "Perfect" † | Ed Sheeran | 82,000 |
| February 3 | "God's Plan" | Drake | 127,000 |
| February 10 | "Say Something" | Justin Timberlake featuring Chris Stapleton | 98,000 |
| February 17 | "God's Plan" | Drake | 55,000 |
| February 24 | "God's Plan" | Drake | 56,000 |
| March 3 | "God's Plan" | Drake | 81,000 |
| March 10 | "Psycho" | Post Malone featuring Ty Dolla Sign | 80,000 |
| March 17 | "God's Plan" | Drake | 57,000 |
| March 24 | "God's Plan" | Drake | 49,000 |
| March 31 | "Found / Tonight" | Lin-Manuel Miranda and Ben Platt | 61,000 |
| April 7 | "God's Plan" | Drake | 42,000 |
| April 14 | "God's Plan" | Drake | 48,000 |
| April 21 | "Nice for What" | Drake | 88,000 |
| April 28 | "Cry Pretty" | Carrie Underwood | 54,000 |
| May 5 | "No Tears Left to Cry" | Ariana Grande | 100,000 |
| May 12 | "Never Be the Same" | Camila Cabello | 51,000 |
| May 19 | "This Is America" | Childish Gambino | 78,000 |
| May 26 | "This Is America" | Childish Gambino | 50,000 |
| June 2 | "Fake Love" | BTS | 29,000 |
| June 9 | "Psycho" | Post Malone featuring Ty Dolla Sign | 31,000 |
| June 16 | "Girls Like You" | Maroon 5 featuring Cardi B | 82,000 |
| June 23 | "Girls Like You" | Maroon 5 featuring Cardi B | 53,000 |
| June 30 | "Girls Like You" | Maroon 5 featuring Cardi B | 52,000 |
| July 7 | "Girls Like You" | Maroon 5 featuring Cardi B | 46,000 |
| July 14 | "Girls Like You" | Maroon 5 featuring Cardi B | 49,000 |
| July 21 | "In My Feelings" | Drake | 89,000 |
| July 28 | "In My Feelings" | Drake | 115,000 |
| August 4 | "In My Feelings" | Drake | 104,000 |
| August 11 | "In My Feelings" | Drake | 72,000 |
| August 18 | "In My Feelings" | Drake | 58,000 |
| August 25 | "In My Feelings" | Drake | 38,000 |
| September 1 | "I Like It" | Cardi B, Bad Bunny, and J Balvin | 32,000 |
| September 8 | "Idol" | BTS featuring Nicki Minaj | 43,000 |
| September 15 | "Girls Like You" | Maroon 5 featuring Cardi B | 32,000 |
| September 22 | "Rap Devil" | Machine Gun Kelly | 36,000 |
| September 29 | "Killshot" | Eminem | 38,000 |
| October 6 | "Killshot" | Eminem | 53,000 |
| October 13 | "Shallow" | Lady Gaga and Bradley Cooper | 58,000 |
| October 20 | "Shallow" | Lady Gaga and Bradley Cooper | 71,000 |
| October 27 | "Shallow" | Lady Gaga and Bradley Cooper | 55,000 |
| November 3 | "Shallow" | Lady Gaga and Bradley Cooper | 42,000 |
| November 10 | "Shallow" | Lady Gaga and Bradley Cooper | 36,000 |
| November 17 | "Thank U, Next" | Ariana Grande | 81,000 |
| November 24 | "Thank U, Next" | Ariana Grande | 43,000 |
| December 1 | "Without Me" | Halsey | 37,000 |
| December 8 | "Without Me" | Halsey | 29,000 |
| December 15 | "Without Me" | Halsey | 50,000 |
| December 22 | "Without Me" | Halsey | 37,000 |
| December 29 | "Without Me" | Halsey | 37,000 |