Underlayment Calculator
Calculate how many rolls of flooring underlayment you need for an installation. Includes seam tape estimate.
Most rolls: 3.28 ft (1 m) wide
Most rolls: 32.81 ft (10 m) long
Each roll covers approximately 108 sq ft
Rolls Needed2rolls
Seam Tape (est.)37lin ft
Seam tape estimate is approximate. Check your underlayment manufacturer's spec sheet for exact tape coverage.