How Many Board Feet In a 1x10x8
4.625 board feet
- Actual size: 0.75" x 9.25" (nominal 1x10")
- Length: 8 ft
Methodboard feet = (thickness x width x length in feet) / 12, using the ACTUAL dressed dimension.
Using the nominal 1x10" number instead of the actual dimension would overstate this by a meaningful margin — see /reference/nominal-vs-actual-2x4/.
An 8-foot 1x10 contains 4.625 board feet — half its actual 9.25" width, the same relationship every 1x board at 8 feet follows, since 0.75" thickness at 8 feet always reduces the multiplier to exactly one-half.
Why this one specifically
1x10 sits one step below the widest common 1x size, used for stair treads and wider shelving where 1x8 would leave too narrow a surface — the board-foot jump from 1x8 (3.625) to this size (4.625) is a full board foot, a useful checkpoint when a design is on the border between the two widths and the cost difference needs to be weighed.
What moves the number
This uses the actual 0.75" x 9.25" dressed dimension; figuring it from the nominal 1" x 10" would overstate the true volume, consistent with every dimensional lumber size this site covers. A longer or shorter piece scales this figure linearly, so a 12-foot 1x10 contains exactly 1.5 times this board-foot count.
Compare against the 1x8x8 and the 1x12x8 for the neighbouring widths, or the matching weight at how much a 1x12 weighs for the widest common size, and run other lengths through the board foot calculator.