🚿 Shower Caulk Calculator

Calculate how many tubes of silicone caulk you need to re-caulk a shower or tub surround. Enter linear feet and bead width for an accurate materials list.

Project Details

Linear Feet to Caulk (feet)

Measure all seams — tub edge, corners, wall joints, and fixtures

Bead Width (1 = 1/8", 2 = 1/4", 3 = 3/8") ()

Tub/shower joints typically need 1/4" bead; wall corners use 1/8"

Remove Old Caulk First (0 = no, 1 = yes) ()

Always recommended — new caulk over old caulk fails quickly

Your Estimate

Enter your details and hit Calculate to see results.

Recommended Tools & Supplies

Top Pick

Oscillating Tool

Fastest way to cut out old caulk beads without damaging tile

Hair Dryer or Heat Gun

Softens stubborn old silicone so it peels cleanly

Rubbing Alcohol

Final surface prep — silicone caulk needs a grease-free bond

Editorial picks. Links go to Amazon — we may earn a small commission at no extra cost to you.

Pro Tips

✓ Fill the tub with water before caulking — it expands the joint to the widest it will ever be, so the caulk won't pull away when full
✓ Tape both sides of the seam with painter's tape for a clean line, then remove the tape while the caulk is still wet
✓ Let silicone cure 24 hours before water contact, 72 hours before full shower use
✓ 100% silicone outlasts siliconized latex in wet areas — worth the extra cost