Batch lumber calculator
Multi-Board Calculator: Calculate Board Feet for Multiple Boards
Enter a board list once, review board feet per row, and keep a running total for the whole batch.
Batch total
Total Rows
2
Total Board Feet
14.67 BF
Sample rows are loaded so the per-row and total results are visible.
# 1
# 2
| # | Thickness (in) | Width (in) | Length (ft) | Qty | Board Feet | Actions |
|---|---|---|---|---|---|---|
| 1 | in | in | ft | 8.00 BF | ||
| 2 | in | in | ft | 6.67 BF |
Batch total
Total Rows
2
Total Board Feet
14.67 BF
What this tool does
This page is for batch calculations. Add multiple boards in a list, see board feet per row, and get an instant total.
How it works
For each row: BoardFeet = (Thickness(in) × Width(in) × Length(ft) × Qty) ÷ 12 Empty rows show “--” and don’t count toward the total.
Tips
- Use actual sizes. A “2×4” is often 1.5" × 3.5".
- For big lists, export CSV so you can keep a copy.
Related links
Use these when your batch list turns into a single-board check, cost estimate, or coverage conversion.
Disclaimer
This tool is for planning and education. Actual lumber dimensions can vary (nominal vs actual). Confirm specs with your supplier.
Real-World Examples
Two sample rows and what they produce.
| Input | Output | Notes |
|---|---|---|
| Row: 1" × 6" × 8' × Qty 2 | 8 BF | Per row: (1 × 6 × 8 × 2) ÷ 12 = 8 |
| Row: 2" × 4" × 10' × Qty 1 | 6.67 BF | (2 × 4 × 10 × 1) ÷ 12 = 6.67 |
Common Mistakes to Avoid
Batch tables are fast—until a small input mistake multiplies.
Mixing length units across rows
If you switch the length unit toggle, make sure you understand whether your entries are feet or inches. A single wrong unit can blow up totals.
Using nominal sizes for precision work
Nominal sizes are fine for estimates, but if you’re budgeting hardwood or tight yields, use actual thickness and width.
Forgetting quantity
Qty multiplies board feet. If you duplicate a size several times, set Qty instead of adding many identical rows.
How to use
- 1
Enter dimensions
Fill in thickness (in), width (in), length, and quantity for each board.
- 2
Check per-row results
Each valid row shows board feet. Empty rows show “--”.
- 3
Copy, export, or share
Use Copy Results for a quick list, or export CSV and share a link.
Frequently Asked Questions
That row is missing a value or has an invalid number. Fill in thickness, width, length, and a whole-number quantity.