7×7=49 or Seven Times Seven Equals Forty-Nine is a math equation popularized in early April 2026 through a series of memes claiming that "7×7=49" is attractive. The concept originates from a viral video by TikToker @heartzz.kyra, who includes the equation in a slideshow of subjects that prove that women don't care about looks.

The video was posted in early April 2026 and inspired a wave of memes about the idea of the equation being hot, including theories as to why this might be, with some linking it to synesthesia (a phenomenon causing sensory crossovers, like tasting colors or feeling sounds).

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