1001Ferramentas
📏Calculators

Lumber Linear Feet Calculator

Enter a length in meters and how many pieces to get the total run in feet: m × 3.2808 × pieces, since 1 foot is 0.3048 m. Cross section is ignored.

Linear feet

Calculating linear feet of lumber

The rule is linear_feet = length_m · 3.2808 · pieces. A linear foot is just 1 foot (0.3048 m) of length, and the board's cross section doesn't enter into it at all. A 2×4 and a 2×10 each count as one linear foot per foot of length. The conversion is 1 m = 3.2808 ft, so a 10 m piece works out to 10 · 3.2808 = 32.81 linear feet. In the U.S. this is how you price beams, studs, battens, and trim. Brazil works in meters, which is why this calculator earns its keep mostly when you're buying from or comparing quotes against American suppliers.

Applications

Common in carpentry, framing, importing U.S. lumber, decking, fencing, and trim work. On the U.S. market, quotes for SPF (Spruce-Pine-Fir), pine, cedar, and treated lumber usually come in $/linear foot by profile, say $0.85/lf for 2×4 SPF. When pricing goes by volume, which is how rough-sawn hardwoods tend to be sold, board feet is the unit to reach for.

FAQ

Linear feet vs board feet, what's the difference? Linear feet count length and nothing else, while board feet fold in thickness and width to give you volume. Linear suits uniform profiles; board feet is for hardwood slabs.

Does the cross section matter? Not for the linear-foot count, but it does move the unit price. A 2×4 runs cheaper per linear foot than a 2×10, even though you measure both the same way.

How do I convert linear feet to meters? Divide by 3.2808, or multiply by 0.3048 if you prefer. So 100 lf = 30.48 m.

Related Tools

🪵

Board Foot Calculator for Lumber

Converts thickness, width and length in inches plus the piece count into board feet: BF = T × W × L × pieces / 144, so a 2 by 6 by 96 in board is 8 BF.

Anchor Bottom Time Feet Calculator

Computes time for anchor to reach sea bottom from depth in feet and average chain descent rate of the boat winch during the operation.

🪵

Pulping Yield

Compute the yield of a pulping (wood cooking) process, Y = (dry pulp mass / dry wood mass)·100%, the fraction of wood converted into usable cellulose. Chemical (kraft) pulping has a low yield (~45–55%), since it dissolves lignin and part of the hemicelluloses; mechanical pulping reaches ~95%, but with lower-quality fibers. It is a central indicator of the process economics and type. Enter the dry pulp mass and the dry wood mass.

🪵

Board Feet Calculator

Convert lumber dimensions to board feet (BF), traditional US unit: 1 BF = 144 cubic inches (12"×12"×1").

📐

Timber Design Strength (kmod, NBR 7190)

Computes the timber design strength per the Brazilian NBR 7190, f_d = k_mod1 · k_mod2 · k_mod3 · f_k / γ_w, where the three modification factors correct the characteristic strength for load duration, service moisture class and timber grade, and γ_w is the material partial safety factor. Timber is the only common structural material whose strength falls with the DURATION of the applied load, and that is what k_mod1 encodes: it is 1.10 for instantaneous action and only 0.60 for permanent load, so the same member is worth nearly twice as much under impact as under self weight. In the most common design combination — long-duration action (0.70), moisture class 1 or 2 (1.00), first-grade sawn timber (1.00) and compression parallel to the grain with γ_wc = 1.4 — the factors cancel such that the design strength comes out exactly half the characteristic value, a shortcut worth memorising to sanity-check any result. Enter the three modification factors, the characteristic strength and the partial safety factor.

🍂

Mulch Calculator: Cubic Feet of Coverage

Enter bed area in square meters and layer depth in centimeters to get the volume in cubic feet: 10 m2 at 7 cm deep needs 24.72 cu ft.

The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.