Lumber Weight Calculator
SI
Imp
Imperial
Inputs
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Wood species
Choose a screening density preset near air-dry stock, or choose custom/measured stock to enter density directly.
Red oak
White oak
Hard maple
Soft maple
Black cherry
Black walnut
White ash
American beech
Yellow birch
Yellow poplar
Douglas fir
Southern yellow pine
Eastern white pine
Western red cedar
Spruce
Teak
Custom / measured stock
Board thickness
(T)
Actual board thickness. Enter nominal sizes only if that is the estimate you intend.
in
Board width
(W)
Actual board width.
in
Board length
(L)
Length of one board or timber.
ft
Quantity
(N)
Number of identical boards or timbers.
boards
Custom wood density
(rho)
Use density for the actual species and moisture condition. Air-dry lumber is often quoted near 12% moisture content.
lb/ft³
Results
Default result
Edit inputs
Total lumber weight
(W_total)
145.7
lb
Pass
10 boards at the selected density.
Also computed
Density used
(rho)
43.7
lb/ft³
Red oak
Weight each
(W_each)
14.57
lb
Weight per length
(w_L)
1.821
lb/ft
Total board feet
(BF_total)
40
bd ft
Board feet each
(BF_each)
4
bd ft
Weight per board foot
(W_BF)
3.642
lb
Total volume
(V_total)
3.333
ft³
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Method notes
3 notes
Weight = density x actual volume. Board feet use thickness(in) x width(in) x length(ft) / 12.
Species preset: Red oak. Presets are screening values near air-dry stock; measured density is better for payload or shipping work.
Use actual dimensions when payload or shipping weight matters. Nominal lumber sizes, species, grade, treatment and moisture content can change the result significantly.
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