Calculating Thousand Board Feet (MBF) for lumber products
All MBF calculations are based upon the "Nominal Size" of the lumber and not the "Actual Size".
Nominal Size |
# Pieces |
H x W ÷ 12 x L ÷ 1,000 x # Pieces |
Results (MBF) |
1x6 16' S4S |
256 |
1 x 6 ÷ 12 x 16 ÷ 1,000 x 256 |
2.048 |
1x6 16' Full Rough |
140 |
1 x 6 ÷ 12 x 16 ÷ 1,000 x 140 |
1.120 |
2x6 16' S4S |
128 |
2 x 6 ÷ 12 x 16 ÷ 1,000 x 128 |
2.048 |
2x6 16' Full Rough |
84 |
2 x 6 ÷ 12 x 16 ÷ 1,000 x 84 |
1.344 |
Calculating Cubic Meters (M3) for lumber products
All M3 calculations are based upon the "Actual Size" of the lumber. To convert MBF to M3, divide the MBF figure by the M3 Factor
Nominal Size |
Actual Size |
Metric Factor |
1x4 / 2x4 S4S |
3/4"x3-1/2" / 1-1/2"x3-1/2" |
0.6461 |
1x6 / 2x6 S4S |
3/4"x5-1/2" / 1-1/2"x5-1/2" |
0.6167 |
1x8 / 2x8 S4S |
3/4"x7-1/4" / 1-1/2"x7-1/4" |
0.6238 |
1x10 / 2x10 S4S |
3/4"x9-1/4" / 1-1/2"x9-1/4" |
0.6112 |
1x12 / 2x12 S4S |
3/4"x11-1/4" / 1-1/2"x11-1/4" |
0.6030 |
Full Rough Lumber |
All Sizes |
0.4240 |
Nominal Size |
Actual Size |
# Pieces |
H x W ÷ 12 x L ÷ 1,000 x # Pieces ÷ Metric Factor |
Results (M3) |
1x6 16' S4S |
3/4"x5-1/2" 16' |
256 |
1 x 6 ÷ 12 x 16 ÷ 1,000 x 256 ÷ 0.6167 |
3.321 |
1x6 16' Full Rough |
1"x6" 16' |
140 |
1 x 6 ÷ 12 x 16 ÷ 1,000 x 140 ÷ 0.4240 |
2.642 |
2x6 16' S4S |
1-1/2"x5-1/2" 16' |
128 |
2 x 6 ÷ 12 x 16 ÷ 1,000 x 128 ÷ 0.6167 |
3.321 |
2x6 16' Full Rough |
2"x6" 16' |
84 |
2 x 6 ÷ 12 x 16 ÷ 1,000 x 84 ÷ 0.4240 |
3.170 |
Calculating Thousand Square Feet (MSF) for panel products
All MSF calculations are based upon the width and length of the panel product, thickness is not considered when calculating.
Panel Size |
# Pieces |
W x L ÷ 1,000 x # Pieces |
Results (MSF) |
23/32" (3/4") 4'x8' |
46 |
4 x 8 ÷ 1,000 x 46 |
1.472 |
7/16" 4'x8' |
80 |
4 x 8 ÷ 1,000 x 80 |
2.560 |
11/32" (3/8") 4'x8' |
88 |
4 x 8 ÷ 1,000 x 88 |
2.816 |
Calculating Cubic Meters (M3) for panel products
All M3 calculations are based upon the "Actual Thickness" of the panel product.
Nominal Thickness |
Actual Thickness |
Metric Factor |
1/4" |
1/4" (6mm) |
1.792 |
3/8" |
11/32" (9mm) |
1.194 |
7/16" |
7/16" (11mm) |
0.977 |
1/2" |
15/32" (12mm) |
0.896 |
5/8" |
19/32" (15mm) |
0.717 |
3/4" |
23/32" (18mm) |
0.597 |
Panel Size |
# Pieces |
W x L ÷ 1,000 x # Pieces ÷ Metric Factor |
Results (M3) |
23/32" (3/4") 4'x8' |
46 |
4 x 8 ÷ 1,000 x 46 ÷ 0.597 |
2.465 |
7/16" 4'x8' |
80 |
4 x 8 ÷ 1,000 x 80 ÷ 0.977 |
2.620 |
11/32" (3/8") 4'x8' |
88 |
4 x 8 ÷ 1,000 x 88 ÷ 1.194 |
2.358 |