Sealant Calculator

Calculate the number of caulk or sealant cartridges needed for your project based on bead dimensions.

Joint Dimensions

Total Length (ft) (ft)

Bead Width (in) (in)

Bead Depth (in) (in)

Cartridge Size (oz) (oz)

Sealant Estimate

Enter joint dimensions to calculate sealant

Overview

Whether you're sealing windows, bathtubs, or expansion joints, knowing how much sealant to buy prevents multiple trips to the hardware store and reduces waste.

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Pro Tips

Use a backer rod for joints deeper than 1/2 inch to save sealant and ensure proper joint geometry.
The '2-to-1' rule (width should be twice the depth) is common for larger expansion joints.
Always buy at least 10% extra to account for waste and the 'over-filling' of the start and end of beads.

Fun Facts

"A standard small caulk tube is 10.1 oz, while large commercial tubes are 29 oz."
"1 fluid ounce of sealant covers approximately 1.8 cubic inches."
"Siliconized sealants have better flexibility than pure acrylic caulk for joints that move."

Formula: Volume (cu in) = Length (ft) × 12 × Width (in) × Depth (in) Volume (oz) = Volume (cu in) / 1.80469

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