Lumber Weights: Green, Kiln-Dried & Pressure-Treated Wood

The density and weight of lumber varies with the water or moisture content in the wood. Typical weights for green, kiln dried and pressure treated lumber boards are indicated in the tables below.  

Note that nominal dimensions are not the same as actual lumber dimensions.

Green Lumber Boards

Green Lumber Boards - Weights

Weight (lb)
Nominal Dimension (in x in)	Length (ft)
	1	8	10	12	16
2 x 4	1.7	13	17	20	27
4 x 4	3.6	29	36	43	58
4 x 6	5.4	43	54	65	86
4 x 8	7.2	58	72	86	115
4×10	9	72	90	108	144
4 x 12	10.8	86	108	130	173
6 x 6	8.1	65	81	97	130

• Inches to mm lumber dimensions
• Weight vs mass - the difference

Drying lumber takes time. Smaller and shorter boards use considerable less time than larger and longer boards. For larger pieces natural drying takes months and often even more than a year - depending on the surrounding temperature, moisture and air circulation. Smaller shorter pieces can dry in weeks.  

• Moisture content in wood

Kiln Dried Lumber Boards

Kiln Dried Lumber Boards - Weights

Weight (lb)
Nominal Dimension (in x in)	Length (ft)
	1	8	10	12	16
2 x 4	1.3	11	13	16	21
2 x 6	2	16	20	24	32
2 x 8	2.7	21	27	32	43
2×10	3.3	27	33	40	53
2 x 12	4	32	40	48	64

• Right click the chart and open in new window for printing

Example - Estimating Shipment Weight of Lumber

The shipment weight of 600 ft of 2 x 4 dried lumber can be estimated from the chart to be approximately

800 lb

Pressure Treated Lumber Boards

Pressure treated with chemical preservatives.

Pressure Treated Lumber Boards - Weights

Weight (lb)
Nominal Dimension (in x in)	Length (ft)
	1	8	10	12	16
2 x 4	2.1	17	21	26	34
2 x 6	3.2	26	32	38	51
2 x 8	4.4	35	44	53	70
2×10	5.5	44	55	66	88
2 x 12	6.6	53	66	79	106
4 x 4	4.8	38	48	58	77
4 x 6	7	56	70	84	112
4 x 8	9.3	75	93	112	149
4 x10	11.7	93	117	140	187
4 x 12	14	112	140	168	224

• Right click the chart and open in new window for printing