WoodBeam28 board feet

4x6x14 — Weight and Board Feet

A 4x6 cut to 14 ft: 28 board feet of nominal section, and 1.8715 cubic feet of actual material to carry. Weight depends on the species, so it is tabulated below.

Quick specification4x6x14

Nominal size4 × 6 in
Actual size (dry)3.5 × 5.5 in (88.9 × 139.7 mm)
Length14 ft (168 in)
Board feet28 bd ft
Actual volume1.8715 ft³
Weight (Spruce (Sitka))50.24 lb (22.79 kg)
Weight per foot3.589 lb/ft

Board feet is a nominal-section convention; volume and weight use the actual section. The two are not interchangeable and are not meant to agree.

Weight by speciesall species in the database, lightest first

Wood database
SpeciesDensity4x6x14 weight
Balsa0.16 g/cm³18.69 lb · 8.48 kg
Cedar (Western Red)0.37 g/cm³43.23 lb · 19.61 kg
Poplar (Yellow)0.42 g/cm³49.07 lb · 22.26 kg
Basswood0.42 g/cm³49.07 lb · 22.26 kg
Redwood0.42 g/cm³49.07 lb · 22.26 kg
Spruce (Sitka)0.43 g/cm³50.24 lb · 22.79 kg
Cedar (Eastern Red)0.47 g/cm³54.91 lb · 24.91 kg
Hemlock (Western)0.47 g/cm³54.91 lb · 24.91 kg
Cypress (Bald)0.48 g/cm³56.08 lb · 25.44 kg
Fir (Douglas)0.53 g/cm³61.92 lb · 28.09 kg
Pine (Southern Yellow)0.55 g/cm³64.26 lb · 29.15 kg
Mahogany (Honduran)0.55 g/cm³64.26 lb · 29.15 kg
Cherry (Black)0.56 g/cm³65.43 lb · 29.68 kg
Larch0.58 g/cm³67.76 lb · 30.74 kg
Teak0.63 g/cm³73.61 lb · 33.39 kg
OSB (Oriented Strand Board)0.65 g/cm³75.94 lb · 34.45 kg
Walnut (Black)0.66 g/cm³77.11 lb · 34.98 kg
Ash (White)0.67 g/cm³78.28 lb · 35.51 kg
Birch Plywood0.68 g/cm³79.45 lb · 36.04 kg
Birch (Yellow Birch)0.69 g/cm³80.62 lb · 36.57 kg
Bamboo0.7 g/cm³81.79 lb · 37.1 kg
Maple (Hard Maple)0.705 g/cm³82.37 lb · 37.36 kg
Beech (American)0.72 g/cm³84.12 lb · 38.16 kg
Oak0.75 g/cm³87.63 lb · 39.75 kg
MDF (Medium Density Fibreboard)0.75 g/cm³87.63 lb · 39.75 kg
Hickory0.82 g/cm³95.81 lb · 43.46 kg
Rosewood (East Indian)0.85 g/cm³99.31 lb · 45.05 kg
Ipe1 g/cm³116.84 lb · 53 kg

Weights are derived, not quoted: density at about 12% moisture content × actual volume. Treat them as a floor — green stock stays heavier until it dries. The spread across species is roughly six to one, so a freight or support estimate that assumes one figure for “a 4x6” can be wrong by a large margin.

Board feet explainedhow 28 bd ft is arrived at

A board foot is 144 cubic inches of nominal section — a board an inch thick, a foot wide and a foot long. Lumber is bought and sold on that basis, so the calculation uses the nominal thickness and width rather than the dressed ones:

(4 × 6 × 14 × 12) ÷ 144 = 28 board feet

The rated price therefore covers more wood than is delivered, which is the long-standing convention rather than an error. The actual volume of material in the same piece is 1.8715 cubic feet.

Lengthhow 14 ft compares with the rest of the table

LengthBoard feetActual volumeWeight (Spruce (Sitka))
4x6x6120.8021 ft³21.53 lb
4x6x8161.0694 ft³28.71 lb
4x6x10201.3368 ft³35.89 lb
4x6x12241.6042 ft³43.06 lb
4x6x14281.8715 ft³50.24 lb
4x6x16322.1389 ft³57.42 lb

Frequently asked questionsabout a 4x6x14

How much does a 4x6x14 weigh?

In Spruce (Sitka), about 50.24 lb (22.79 kg). Across the species in this database it ranges from 18.69 lb in Balsa to 116.84 lb in Ipe.

How many board feet is a 4x6x14?

28 board feet, calculated from the nominal section: (4 × 6 × 168) ÷ 144.

What are the actual dimensions of a 4x6x14?

3.5 × 5.5 inches in section, 14 ft long — 88.9 × 139.7 millimetres by 14 feet. The nominal 4 × 6 inch call size is the rough green section.