My Go-To Board Foot Calculator for Lumber, Plywood, Floor Joists, and Logs

Hey everyone, I do a mix of DIY projects, small carpentry jobs, and occasional sawmill work. For years I did lumber math on paper, and I can't count how many times I messed up a quote because I mixed up board feet with linear feet. Recently I started using boardfootcalculator.pro, and it has made a huge difference. I wanted to share how I use their board foot calculator and the other tools, and see what you all use.



The Board Foot Calculator

First, the board foot calculator is simple: enter thickness, width, length, quantity, and it gives you total board feet. It handles both inches and feet, so no more converting everything manually. I use it for rough lumber, hardwood, and even small offcuts. Before this, I'd use a generic bd ft calculator app, but it would round weirdly or not let me add multiple pieces. The board feet calculator on boardfootcalculator.pro lets me add rows, which is perfect when I'm buying a mixed bundle from a local mill. I also like that it shows the formula, so I can double-check the math if I need to.

One thing I appreciate is that the board foot calculator and board feet calculator are not just for pros. Beginners can use them to price a single walnut slab or plan a bookshelf. The bd ft calculator also helps when comparing lumber yards because you can quickly see which supplier is actually cheaper per board foot. That alone has saved me from overpaying.



The Plywood Calculator

The plywood calculator is another one I didn't know I needed. I used to just estimate sheets based on square footage, then drive back to the store because I was short. Now I enter the project dimensions, sheet size, and waste factor, and it tells me exactly how many sheets to buy. It's saved me money on a recent cabinet build and a subfloor repair. If you're doing a lot of sheet goods, a dedicated plywood calculator is way better than guessing. It also helps with odd shapes because you can break the project into sections.



The Floor Joist Calculator

For framing, the floor joist calculator has been a big help. I'm not an engineer, so I always double-check span tables. This tool lets me plug in joist size, spacing, species, and span, and it gives me a quick reference. I still verify with local codes, but it's a great starting point for decks, shed floors, and room additions. I used it on a 16x20 deck, and it helped me choose 2x10s at 16" on center instead of overbuilding. If you're doing any structural work, a floor joist calculator is a must-have.



The Log Board Foot Calculator

The log board foot calculator is probably the most niche, but it's perfect for anyone with a sawmill or chainsaw mill. I occasionally mill cedar and pine logs, and I never know what to charge or how much lumber I'll get. The log board foot calculator uses the Doyle, Scribner, and International scales, so you can compare. I like that it accounts for log diameter and length. It's not perfect because taper and defects matter, but it's close enough for pricing and planning. It's also useful when buying logs from a landowner.



Final Thoughts

Overall, boardfootcalculator.pro has become my go-to for quick lumber math. I still keep a tape measure and calculator handy, but the board foot calculator, bd ft calculator, plywood calculator, floor joist calculator, and log board foot calculator cover 90% of what I need. The site is clean, works on mobile, and doesn't bombard you with ads. If you're tired of scribbling formulas on a notepad, give it a try. I'm curious what others use—do you have a favorite board feet calculator, or do you still do it by hand? Also, has anyone compared the log board foot calculator to actual mill yield? I'd love to hear real-world numbers. And if you have a favorite bd ft calculator for mobile, share it below. Thanks.