Wood Weights and Measures

Wood is generally selected for for use based upon three main factors: appearance, structural characteristics, and cost.  I've included this page in order to assist you in the acquisition of data as it pertains to the structural and mechanical properties of various species.  This page provides approximate weight and dimensional data.  However, wood is also classed by its density, or hardness.  For data pertaining to wood hardness, click here.

Below are standardized tables of wood volume measurements and weights of some species.  I've provided a calculator to determine the approximate weight of a species, given the number of boardfeet that you provide.  While the weights given are approximate, the calculator may be helpful in determining the approximate shipping weights for wood shipments. 

This calculator requires the use of JavaScript enabled and capable browsers. This calculator is designed to provide approximate weights for many different wood varieties, but tempered with the logical caveats. Wood varies considerably in weight based on numerous factors, including area, climatic conditions, cutting time, age and many other conditions. My objective is to give a reasonably good approximation. Enter the number of boardfeet of lumber, then select the species. Click on Calculate for the resulting approximate weight. 
Lumber Weight Calculator
Required Data Entry
Boardfeet of
    
Calculated Result
pounds total weight, air-dried

 

Wood Products Standard Weights & Measures

1 FBM = 1 board foot (12" x 12" x 1")
1 MFBM = 1,000 fbm
1 MSF = 1,000 square feet (veneer or panel board)
1 cunit = 100 ft3
1 cord = 128 ft3 x 4' x 4' x 8' (85 ft3 solid wood, 15ft3 air, and 28ft3 of bark)
1 tonne - 1000 kilograms = 1.1023 tons
1 ton = 2000 lbs - 0.9072 tonnes

# of imperial units x conversion factor = metric units/conversion factor = imperial units

Round Wood
1MFBM = 5.1282 m3
1 Cord = 2.4070 m3
1 Cunit = 2.8317 m3
Lumber
1 MFBM = 2.3598 m3
1 Cord = 1.1075 m3
1 Cunit = 1.3029 m3
Wood Residues
(includes chips, shavings, sawdust & bark)
1 Bone Dry Tonne = 2.6525 m3
1 Bone Dry Ton = 2.4067 m3
1 Green Tonne = 1.3262 m3
1 Green Ton = 1.2035 m3
1 Cunit = 2.8321 m3
Dense Hardwood Residues
(for chips, shavings, sawdust only)
1 Bone Dry Tonne = 1.8488 m3
1 Bone Dry Ton = 1.6775 m3
1 Green Tonne = 0.9233 m3
1 Green Ton = 0.8388 m3
1 Cunit = 1.9740 m3
Roundwood Weight
1 metric tonne = m3 1
White Pine = 1.1198 m3
Red Pine = 1.1820 m3
Spruce = 1.3004 m3
Jack Pine = 1.2376 m3
Balsam Fir = 1.0870 m3
Hemlock = 1.1273 m3
Birch = 0.8873 m3
Poplar = 1.0091 m3
Mixed Hardwood = 0.8929 m3
Imperial Ton = m3
White Pine = 1.2344 m3
Red Pine = 1.3030 m3
Spruce = 1.4334 m3
Jack Pine = 1.3642 m3
Balsam Fir = 1.1982 m3
Hemlock - 1.2426 m3
Birch = 0.9781 m3
Poplar = 1.1123 m3
Mixed Hardwood = 0.9842 m3
 

Weights of Various Woods (pounds per 1000 board feet)

Species Lumber Lumber Logs Wood
Green (Mbf) Air Dry 12 in. Green Cord

Ash, white

4,000

3,450

11,100

4,320

Aspen, (Popple)

3,500

2,250

10,800

3,780

Balsam

3,750

2,200

10,400

4,050

Basswood

3,400

2,150

9,500

3,690

Beech

4,600

3,650

12,700

4,950

Birch, yellow

4,850

3,600

13,200

5,220

Cedar, western, red

2,250

1,920

6,200

2,430

Cherry, black

3,850

2,920

10,500

4,140

Chestnut

4,600

2,500

12,600

4,950

Cottonwood

4,100

2,400

10,700

4,410

Cypress, southern

4,250

2,700

11,800

4,590

Elm, white

4,400

3,700

11,300

4,770

Elm, slippery

4,700

3,100

12,600

5,040

Fir, balsam

3,750

2,200

10,400

4,050

Fir, Douglas

3,200

2,850

8,700

3,420

Gum, black

3,750

2,920

10,400

4,050

Gum, red (sweet)

4,200

2,850

10,600

4,500

Hackberry

4,200

3,100

11,300

4,500

Hemlock, eastern

4,100

2,350

11,200

4,410

Hickory

5,350

4,250

14,700

5,760

Locust, black

4,850

4,100

13,400

5,220

Maple, sugar

4,700

3,700

12,900

5,040

Maple red

4,200

3,200

11,900

4,500

Maple, silver

3,750

2,750

10,500

4,050

Oak, red

5,250

3,700

14,800

5,670

Oak, white

5,200

4,000

14,400

5,580

Pine, jack

4,200

2,500

11,500

4,500

Pine, loblolly

4,500

3,200

12,400

4,860

Pine, longleaf

4,250

3,400

11,100

4,590

Pine, Norway (red)

3,500

2,750

9,700

3,780

Pine, pitch

4,500

2,900

12,400

4,860

Pine, shortlleaf

4,250

3,200

10,400

4,590

Pine, slash

4,700

4,000

12,200

5,040

Pine, sugar

4,250

2,100

11,500

4,590

Pine, yellow (western)

3,750

2,350

11,300

4,050

Pine, white

2,920

2,250

9,000

3,150

Poplar, yellow (tulip)

3,200

2,350

8,800

3,420

Spruce, black

2,700

2,350

7,700

2,880

Sycamore

4,350

2,920

12,000

4,860

Walnut, black

4,840

3,250

11,900

5,220

 

Specific Gravity for some woods

Confusion often results over the meaning of the two terms; density and specific gravity. Density generally refers to the concentration of matter, measured as mass per unit volume.  Specific gravity is defined as the ratio of the density of a material to the density of pure water (62.4 lbs per cubic ft.).  Thus, a material which weighs 124.8 lbs. per cubic foot has a specific gravity of 2.0, and a material which, at a cubic foot, weighs half of what water weighs has a specific gravity of .50.  In short, a material's specific gravity is its weight, relative to the same volume of water; expressed as a decimal.  Below is a table which expresses the specific gravities for some species.

 

Wood Species

Specific Gravity

Wood Species

Specific Gravity

Oven-dry

Volume

Green

Volume

Oven-dry

Volume

Green

Volume

Ash, commercial white

.55

.64

Silver Maple

.44

.51

Aspen, quaking

.35

.41

Sugar Maple

.56

.68

Basswood, American

.32

.40

Oak:

   

Bald cypress

.42

.48

Red4

.57

.58

Beech, American

.56

.67

White5

.60

.72

Birch, yellow

.55

.66

Pine:

   

Cherry, black

.47

.53

Loblolly

.47

.54

Chestnut, American

.40

.45

Lodgepole

.38

.43

Cottonwood:

   

Longleaf

.54

.62

Eastern

.37

.43

Eastern white

.34

.37

Northern black

.32

.37

Red

.41

.51

Douglas-fir:

   

Ponderosa

.38

.42

Coast type

.45

.51

Shortleaf

.46

.54

Intermediate type

.41

.47

Slash

.56

.66

Rocky Mountain type

.40

.45

Sugar

.35

.38

Elm:

   

Western white

.36

.42

American

.46

.55

Red cedar:

   

Rock

.57

.66

Eastern

.44

.49

Slippery

.48

.57

Western

.31

.34

Fir:

   

Redwood

.38

.42

Balsam

.34

.41

Spruce:

   

Commercial white1

.36

.41

Eastern6

.38

.43

Hackberry

.49

.56

Engelmann

.32

.35

Hemlock:

   

Sitka

.37

.42

Eastern

.38

.43

Sugarberry

.47

.54

Western

.38

.44

Sweet gum

.44

.53

Hickory:

   

Sycamore, American

.46

.54

Pecan2

.59

.64

Tamarack

.49

.56

True3

.64

 

Tupelo:

   

Honey locust

.60

.67

Black

.46

.55

Larch, western

.50

.59

Water

.46

.53

Locust, black

.66

.71

Walnut, black

.51

.56

Maple:

   

White-cedar

.29

.32

Bigleaf

.44

.51

Yellow-poplar

.38

.43

Black

.52

.62

     

Red

.49

.55

     

1Average of grand fir and white fir.

2Average of bitternut hickory, nutmeg hickory, water hickory, and pecan.

3Average of shellbark hickory, mockernut hickory, pignut hickory, and shagbark hickory.

4Average of black oak, laurel oak, pin oak, northern red oak, scarlet oak, southern red oak, swamp red oak, water oak, and willow oak.

5Average of bur oak, chestnut oak, post oak, swamp chestnut oak, swamp white oak, and white oak.

6Average of black spruce, red spruce, and white spruce.