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Everyday Life Calculators

Garbage Bag Size Calculator

Calculate the recommended trash bag width and length for a bin based on its dimensions.

Recommended bag width
Recommended bag length
Approximate bin capacity
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About the Garbage Bag Size Calculator

A trash bag needs to be wide enough to wrap around the bin's inner perimeter and long enough to reach the bottom with extra to fold over the rim.

Formula: Bag Width ≈ Bin Width + Bin Depth; Bag Length ≈ Bin Height + (0.5 × Bin Width). Bin Capacity (gal) = (Width × Depth × Height) ÷ 231.

Use the estimated capacity in gallons to match against the sizing printed on trash bag boxes (like "13 gallon" or "33 gallon" bags).

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