Understanding Linear Feet
Linear feet is a measurement of length or distance expressed in feet. The term "linear" refers to a single dimension - length - as opposed to area (two dimensions) or volume (three dimensions). When something is measured in linear feet, it means you are measuring how long it is in a straight line, regardless of its width or height.
For example, if you have a piece of baseboard molding that is 10 linear feet long, it is 10 feet long but the measurement does not account for how wide or thick the molding is. This is fundamentally different from square feet, which measures area.
How to Calculate Linear Feet
Calculating linear feet is straightforward:
Linear Feet = Length in Feet
If you need to convert from other units:
- •From inches: Divide by 12 (12 inches = 1 foot)
- •From yards: Multiply by 3 (1 yard = 3 feet)
- •From meters: Multiply by 3.28084 (1 meter ≈ 3.28 feet)
Linear Feet vs. Square Feet
These are two completely different measurements that are often confused:
Linear Feet
Measures length (one dimension). Example: A fence that is 100 linear feet long means it extends 100 feet in one direction.
Square Feet
Measures area (two dimensions). Example: A room that is 100 square feet covers an area of 100 feet in length times width combined.
You can convert linear feet to square feet if you know the width. For instance, 100 linear feet of flooring material that is 2 feet wide equals 200 square feet (100 × 2 = 200).
Common Applications
Molding and Trim
Baseboards, crown molding, chair rails, and other trim materials are typically sold by the linear foot.
Fencing
Fence sections, privacy screens, and railing are measured in linear feet to determine total project length.
Flooring Materials
Hardwood, laminate, and tile flooring are often sold by linear foot for specific widths.
Lumber and Pipes
Wood boards, PVC pipes, copper tubing, and similar materials are measured in linear feet.
Landscaping Edging
Garden edging, decorative borders, and landscape timbers are sold by linear foot.
Tips for Accurate Measurements
- ✓Use a quality measuring tape for accuracy
- ✓Measure along the actual path the material will follow
- ✓Account for corners, angles, and obstacles
- ✓Add 5-10% extra for cuts, waste, and contingency
- ✓Double-check measurements before ordering materials