MyYardCalcVolume and cutting yield answer different questions
Use the board foot calculator to check lumber volume and price. The log board foot calculator estimates sawn yield under a selected scaling rule. The lumber cut calculator counts stock for repeated equal-length pieces after kerf and end trim.
Keep nominal and actual dimensions distinct. A board-foot price does not tell you how many finished cuts fit into the stock, and a log scaling estimate does not guarantee usable boards or timber value.
Plan finished surfaces separately
The decking calculator uses board direction, actual width and gaps. The flooring calculator uses labeled box coverage. Check the layout before buying; neither estimate includes the supporting structure or a complete installation quote.