Home & DIY Calculators
Caulk Calculator
Enter your total joint length, bead width, and tube size to estimate how many tubes of caulk you'll need.
3 tubes
≈ 24.3 linear ft per tube
Estimates coverage assuming a square bead cross-section (width × width) — actual yield varies with your technique and the joint shape, so buy an extra tube for larger jobs.
How to use this tool
- 1Enter the total length of joints or gaps to be caulked.
- 2Enter your intended bead width in inches.
- 3Enter your tube size in fluid ounces.
- 4See linear feet per tube and tubes needed.
Frequently asked questions
Should I buy extra tubes?+
Yes — this is an estimate assuming a consistent square bead; uneven application, corners, and touch-ups typically use more than the calculated amount, so round up.