Caulk Calculator

Calculate how many tubes of caulk you need for a run, based on the gap size.

Caulk Tubes
— tubes
Rounded up.

Usage Tip

Cut the nozzle tip to match your gap and tool the bead within a few minutes before it skins over.

THE MATH
tubes = round up( linear feet ÷ coverage per tube )
Caulk coverage depends on the bead size: a wider gap empties a tube faster. Tube count is the run length divided by the feet-per-tube for your gap.
Enter the linear feet to caulk and the gap size.
A 1/4 inch bead covers about 30 feet per tube; wider gaps cover less.
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.