Caulk Calculator
Calculate caulk tubes needed for sealing joints. Enter joint length, width, and depth for tube count.
π§ Caulk Calculator
Results
Joint Volume37.5 cu in
Tubes (10.3 oz)2 tubes
π‘ How to Calculate Caulk Quantity
Caulk volume = joint length Γ width Γ depth. A standard 10.3 oz cartridge contains about 18.8 cubic inches of caulk. Squeeze tubes (5.5 oz) contain about 10 cubic inches. Calculate the joint cross-section and multiply by total length.
For joints wider than 1/2 inch, use backer rod to fill the gap first, then caulk. The ideal caulk joint is wider than it is deep β a 2:1 width-to-depth ratio provides the best adhesion and flexibility.
50 ft of 1/4 Γ 1/4 inch joints: volume = 600 Γ 0.25 Γ 0.25 = 37.5 cu in Γ· 18.8 = 2 tubes of 10.3 oz caulk.