"Can I Get It" received mixed reviews from music critics, who were generally positive about its acoustic portion and lyrics, but highly criticised its whistled hook.
Some thought that what they called the song's "brazen" pop production catered to the tastes of mainstream radio, which made it an outlier on 30, and compared it to Flo Rida's single "Whistle" (2012).
[27][28][29] The song has a kitchen sink production, which incorporates "acoustic guitar breakdowns, slickly produced drum loops, [...] and horns" according to Exclaim!
[35] The Los Angeles Times's Mikael Wood and Variety's Chris Willman likened the "boot-scooting acoustic groove" and chorus guitar strums of "Can I Get It" to George Michael's single "Faith" (1987).
[34][38] Ilana Kaplan of Consequence described it as a "'70s rock-inspired track" and David Cobbald of The Line of Best Fit called it an "American-inspired, stomping rodeo of a song".
[43] "Can I Get It" received mixed reviews from music critics, who thought it strayed from the rest of 30, which consisted mostly of emotional ballads[35] that seek Adele's identity outside of romantic relationships.
[42] Peter Piatkowski of PopMatters stated that its brazen pop production felt "a bit shocking, almost disrespectful, and discordant" in the context of the album but praised its "earworm" hook and infectious chorus and favourably compared it to Adele's 2010 single "Rolling in the Deep".
[27] Writing for DIY, Emma Swann viewed "Can I Get It" as "easily Adele's most conventionally 'pop' moment to date" and added that though its production defies her signature ballads, it also projects more character.
Club's Gabrielle Sanchez wrote that the song constituted the "most pop-oriented and straightforward" segment of 30, along with "Oh My God", but criticised its whistling as "a hollow carry-over from 2010s radio pop".
[38] Maura Johnston of Entertainment Weekly opined that it was one of "a few grand pop moments" on the album and noted that its carefree production complements its lyrics.
[46] Writing for Billboard, Jason Lipshutz ranked "Can I Get It" as the second-best song on 30; he believed it succeeded on all levels and could outdo the radio success of "Easy on Me".
[33] Writing for The Independent, Annabel Nugent described the "stomp-and-clap hook" of "Can I Get It" as "most unsettling" and thought Martin and Shellback left more of a mark on it than "Send My Love (To Your New Lover)".