Sealant Calculator

Estimate caulk/sealant tubes for a joint.

Joint length

Joint width

Joint depth

Tubes needed (tubes) 1

Sealant volume (in³) 12

Formula: tubes = joint volume ÷ ~18.8 in³ per tube

Step-by-step with your numbers:

1. Values used:

2. Joint length = 1

3. Joint width = 1

4. Joint depth = 1

6. Tubes needed = Joint length x Joint width = 1 x 1 = 1tubes

7. Sealant volume = 12in³

Did we solve your problem today?

Estimate how many caulk tubes a joint needs.

The math behind it

joint volume (in³) = length × 12 × width × depth; a 10 oz tube yields ~18.8 in³.

50 ft, 3/8 × 3/8 in joint → 5 tubes.

Tube size?

A standard 10.1 oz cartridge ≈ 18.8 in³.