This calculator estimates the lifespan of your bra's hook-and-eye closure based on your usage. You'll input how frequently you wear the bra and which hook setting you currently use. The calculator then estimates how many more months of wear you can expect before the band is likely too stretched to provide adequate support, even on the tightest hook.

The hook-and-eye closure is the key to a bra's adjustable fit and a great indicator of its overall lifespan. A new bra should fit comfortably on the loosest hook. As the band inevitably stretches over time, you move to the tighter hooks to maintain a snug fit. This calculator helps you understand this aging process, so you know when your bra is nearing the end of its supportive life.

The result is an estimated number of months before you'll need to replace your bra. This is a great tool for planning your lingerie budget and knowing when to start looking for a replacement. If the calculator shows only a few months of life left, it's a good time to check the fit. If the band feels loose even on the tightest hook, it's time for a new bra, regardless of the calculator's estimate.

• Always fasten the hooks before washing your bras to prevent them from snagging on other items.
• Using a mesh laundry bag helps protect the hooks and the overall structure of the bra during washing.
• If you're between band sizes, a band extender can be a temporary solution, but it's best to find a bra that fits perfectly on its own.
• When your bra is on its last hook, it's a great time to start shopping for its replacement.
• A well-fitting band should be snug and parallel to the floor, not riding up your back.