Your measurements
Result
0
A baseboard calculator works out how much baseboard (skirting) trim you need — in linear feet and in pieces of your stock length — from the room's perimeter, minus the doorways. It's the quick way to order trim without pacing the room with a tape and guessing.
Enter the room size and how many doors, and it deducts the openings, adds a waste allowance for the mitre cuts, and tells you how many 8 ft (or your length) pieces to buy.
Perimeter = 2 × (length + width), or your entered figure. Net = perimeter − doorways (≈3 ft each). Pieces = net × waste multiplier ÷ stock length, rounded up. Inside and outside corners and scarf joints waste material, so the allowance matters; match piece length to wall runs to cut down on joints.
A 14 × 12 ft room has a 52 ft perimeter; less two 3 ft doorways that's 46 ft, or seven 8 ft pieces with 10% waste.