# Online Two end log calculator

 Forum topic by greenhorn712 posted 08-31-2011 11:53 PM 1921 views 0 times favorited 6 replies
 greenhorn7126 posts in 2428 days 08-31-2011 11:53 PM I am looking for an online log calculator which gives board feet, volume, and weight by species if possible, using both the fat and skinny end of a log. From what I’ve read online this is a “Two end conic rule?” I’m going to do some small scale logging in the near future and want to get an estimate of the yield I would be looking at before going to a mill or hiring a logger and somebody maybe trying to pull the wool over my eyes. Does anyoneknow of an online calculator using the two end rule? I’ve been unsuccessful in finding one. I’ve been able to find all kinds using only the skinny end. Thanks! -- Nancy~~Washington State

## 6 replies so far

 Barbara Gill153 posts in 2628 days #1 posted 09-01-2011 12:31 AM Try Woodweb. -- Barbara Nomad62726 posts in 2926 days #2 posted 09-01-2011 12:31 AM go to woodweb.com, they have the exact calculator you need. -- Power tools put us ahead of the monkeys greenhorn7126 posts in 2428 days #3 posted 09-01-2011 04:46 PM Thanks Barbara and Nomad, the log volume calculator on Woodweb is perfect; but their board footage one only uses the small end of a log; I’d like to find a bdf calculator that uses both ends :-) -- Nancy~~Washington State Nomad62726 posts in 2926 days #4 posted 09-01-2011 07:11 PM Well, I up and misread what you wrote, sorry about that. Anyway, all loggers and mills use the small end for board footage as that is the way it is cut; the bevel is considered waste as you cannot get a board out of it unless you are cutting a really long log and snip off what you can use from the cut-off. But to answer your question I would guess you could use the estimator from woodweb to get 2 measurements from full logs of each size you have, then average them; say a 20” log and an 18” log would average to a 19” log, making an 18×20 “coned” log a straight 19” log… -- Power tools put us ahead of the monkeys WDHLT151732 posts in 2443 days #5 posted 09-02-2011 04:06 AM If you are looking at board feet, the log rules like Doyle, International, and Scribner only use the length and the small end diameter. If you are looking for cubic foot volume, the google smalian’s formula. -- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com greenhorn7126 posts in 2428 days #6 posted 09-02-2011 05:18 PM Thanks Nomad62, I’ve read up some about how the mills price and while I understand they have to make their money too, I’ve thought it’s a bit of a gip for them to only use the small end, ‘cause basically they’d be getting much of the tree for free? WDHLT15, before your reply I hadn’t seen anything mentioning smalian’s formula, thank you! Now if I can find an actual calculator that uses that instead of articles, that’ll be good :-) -- Nancy~~Washington State

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