Sealant Calculator
Calculate how many tubes of caulk or sealant you need for construction joints. Enter joint dimensions and tube size for accurate material estimates.
Sealant Estimate
Sealant Needed (10 oz tubes)2
Coverage per Tube98.6 ft
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💡 Did you know? Saving this calculation connects it to our Project Planner, allowing you to bundle multiple estimates (concrete, paint, tile, etc.) into a unified shopping list with shared measurements.
Frequently Asked Questions
How many tubes of caulk for 100 ft?
For a 1/2"×1/2" joint, 100 ft needs about 5 tubes of 10 oz sealant (100 × 0.25 cu in/tube).
What size sealant joint do I need?
Width = 2× expected movement (minimum 1/4"). Depth = width (up to 1/2"). For wider joints, use a backer rod.
What sealant for concrete joints?
Use self-leveling polyurethane for horizontal joints, non-sag polyurethane for vertical joints. Silicone for non-porous surfaces.