That's a great question! Getting the right size liner makes cleanup so much easier and keeps your bin cleaner. Here’s a simple way to figure it out.
First, grab a measuring tape. You'll need two key measurements from your empty trash can:
1. Height/Depth: Measure from the bottom inside the bin all the way up to just under the rim.
2. Circumference (Girth): Measure around the outside of the bin at its widest point, usually near the top.
Now, check the packaging of any box of trash bags. They always list the dimensions, like "30 gal" or "13 gal," along with the actual size (e.g., 24" x 33"). Match your bin's measurements to the bag's. The bag's height/depth should be a few inches *taller* than your bin's to allow you to fold it over the rim. The bag's width (half its circumference) should be close to or slightly larger than your bin's circumference.
A quick pro tip: If your can has a rolled or lipped rim, you might need a "drawstring" or "flex fit" style bag that can stretch and hook over it securely. When in doubt, buy a small box of a candidate size first to test the fit before stocking up.
It usually just takes one quick measurement to end the guesswork and get a liner that fits snugly and neatly every time