That's a great question! Figuring out the right liner size can be tricky, but it's much easier once you know what to measure. Here's a simple, natural way to do it:
First, grab a measuring tape. For the height, measure from the very bottom of the inside of your can straight up to the top rim. Then, subtract about 2-3 inches. This gives you the ideal liner height, allowing you to fold the excess over the rim without the bag being too short or excessively long.
Next, measure the width or circumference. If your can is round, wrap the tape around the outside of the top rim to get the circumference. For rectangular cans, measure the length and width of the top opening. These numbers are key.
Now, check the box or product description of the liners you're buying. They usually list the dimensions they fit (like "fits cans up to 30 quarts" or "for 13-gallon cans"). Match your measurements to their specs. A common standard for kitchen bins is the 13-gallon size.
A quick pro tip: If your can has a unique shape or a flip lid, consider "drawstring" bags for a more secure fit. And when in doubt, it's better for a bag to be slightly too big than too small—a saggy bag is less messy than one that won't cover the rim!
Honestly, taking two minutes to measure saves you from the hassle of ill-fitting bags that slip in or tear. Once you know your can's numbers, buying liners becomes a breeze.