A bracelet that fits well should suit both your wrist and the way you plan to wear it. Use a soft measuring tape around the wrist where the bracelet will sit, keeping the tape comfortably close rather than pulling tight. Check the brand's sizing instructions to see whether its listed measurement refers to the bracelet itself or the wrist it is designed to fit.
Different styles need different amounts of ease. A bangle must be large enough to pass over the hand, while a chain bracelet usually needs room to move without sliding off. Charms add weight and can change how a bracelet hangs. If the design includes an extender, confirm its range and where the clasp will fall when fastened.
Think about daily activities, too. A loose bracelet may knock against a desk or catch on sleeves; a tight one can feel restrictive as your wrist moves. If you are buying a gift, a known wrist measurement or a clearly adjustable closure can reduce guesswork. Try the bracelet during ordinary movement before deciding whether the fit feels right.