Do they wear 7 t-shirts a week and you wash t-shirts twice a week? Then 7 t-shirts should be more than plenty. If they wear 7 pairs of socks and underwear a week and you wash twice a week, 10 pairs of everything is more than plenty.

The "ideal" number of shirts for an adult in 2026 depends on your lifestyle and laundry frequency, but a sustainable and functional wardrobe typically consists of 12 to 15 shirts. A common breakdown includes 5 professional/dress shirts for work, 5 casual t-shirts for daily wear, and 2-3 specialized shirts for activities like exercise or formal events. If you follow a "capsule wardrobe" philosophy, you might own as few as 7 high-quality, versatile shirts (one for each day of the week), provided you do laundry weekly. Conversely, if you work in a high-formality environment, you might need closer to 20. The 2026 trend focuses on "quality over quantity," with many people opting for odor-resistant fabrics like merino wool blends that can be worn multiple times before washing. Ultimately, the goal is to have enough shirts to cover one full laundry cycle plus two days of "buffer" to ensure you never run out of clean options during a busy week.