Linear Feet Calculator
Calculate linear feet for lumber, fencing, trim, and other materials. Convert between linear feet, board feet, square feet, and inches.
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Frequently Asked Questions
What is a linear foot?
A linear foot (or lineal foot) is a measurement of length equal to 12 inches. Unlike square feet which measure area, linear feet measure straight-line distance. It's commonly used for lumber, trim, fencing, and other materials sold by length.
How do I convert square feet to linear feet?
To convert square feet to linear feet, you need the width of the material. Formula: Linear Feet = Square Feet ÷ (Width in inches ÷ 12). Example: 100 sq ft of 6-inch wide material = 100 ÷ 0.5 = 200 linear feet.
What is the difference between linear feet and board feet?
Linear feet measures length only, while board feet measures volume (length × width × thickness). One board foot = 144 cubic inches. To convert board feet to linear feet: Linear Feet = Board Feet × 12 ÷ (Width × Thickness).
How many linear feet is a 2x4x8?
A 2x4x8 piece of lumber is 8 linear feet. The "2x4" refers to nominal dimensions (actual size is 1.5" × 3.5"), but linear feet only measures length, so an 8-foot board is always 8 linear feet regardless of width.
How many linear feet of fence do I need for 1 acre?
For a square 1-acre lot (208.7 ft per side), you need approximately 835 linear feet of fencing. For a rectangular lot, calculate perimeter: 2 × (length + width). Use our calculator above for your specific dimensions.
How much does linear foot cost for lumber?
Lumber prices vary by type and region. Common prices: Pine: $0.50-2.00 per linear foot, Cedar: $1.50-4.00 per linear foot, Pressure-treated: $0.75-2.50 per linear foot, Hardwood: $3-10+ per linear foot.
How do I calculate linear feet for baseboards?
Calculate the perimeter of the room (2 × (length + width)), then subtract door widths (typically 3 ft per door). Add 10% for waste. Example: 12'×10' room = 44 linear feet - doors, + waste.
How many linear feet are in a 2x4x10?
A 2x4x10 piece of lumber is 10 linear feet. The board foot measurement would be: (10 × 1.5 × 3.5) ÷ 12 = 4.375 board feet. Linear feet only measures length, so it's always the nominal length.
How to calculate linear feet for decking?
Multiply deck area (length × width) by (12 ÷ board width) to get linear feet. Example: 20'×12' deck = 240 sq ft. With 5.5" boards: 240 ÷ (5.5/12) = 524 linear feet. Add 10% for waste and pattern.