LaymarCrafts Woodturning Information

 

Timber Cubic Feet Calculator

I often buy from the local Tree Surgeons Branches of various Woods and I have an agreed rate based on a Price per Cubic Foot, to make Calculation easy I use the small Chart below to find the exact amount for each size that I am purchasing and therefore avoid any disagreement over Price, well almost.

 

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Length  Ft. >>>

 1 2 3 4 5 6 7 8 9 10

Diameter ins.

 < < < < Cubic Feet > > > >
2 0.02 0.04 0.07 0.09 0.11 0.13 0.15 0.17 0.20 0.22
3 0.05 0.10 0.15 0.20 0.25 0.29 0.34 0.39 0.44 0.49
4 0.09 0.17 0.26 0.35 0.44 0.52 0.61 0.70 0.79 0.87
5 0.14 0.27 0.41 0.55 0.68 0.82 0.95 1.09 1.23 1.36
6 0.20 0.39 0.59 0.79 0.98 1.18 1.37 1.57 1.77 1.96
7 0.27 0.53 0.80 1.07 1.34 1.60 1.87 2.14 2.40 2.67
8 0.35 0.70 1.05 1.40 1.74 2.09 2.44 2.79 3.14 3.49
9 0.44 0.88 1.32 1.77 2.21 2.65 3.09 3.53 3.97 4.42
10 0.55 1.09 1.64 2.18 2.73 3.27 3.82 4.36 4.91 5.45
11 0.66 1.32 1.98 2.64 3.30 3.96 4.62 5.28 5.94 6.60
12 0.79 1.57 2.36 3.14 3.93 4.71 5.50 6.28 7.07 7.85

I simply sort the Branches by Diameter and then measure the total length and from the Chart I can quickly establish the Volume of Timber in Cubic Feet. i.e. I have 5 Logs approximately all 6" diameter and with a total length of 18ft, from the Chart I get 1.77ft³(6" by 9ft) x 2 (to get 18ft) therefore I have 3.54ft³ of Timber.

I carry this around with me, I always have one in my Wallet, one in the Car and yet another in the Workshop and House so I am never without my own little Ready Reckoner, plus a similar one converting Price per Cubic Foot into my Buying Price.

 

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Last update 16 July 2007
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