Board Foot Calculator
Total Board Feet
4.00
Fraction / Decimal Reference
| Fraction | Decimal | Metric (mm) |
|---|
Golden Ratio (1 : 1.618)
Smaller (Φ⁻¹)
6.18
~ 6 3/16"
Larger (Φ)
16.18
~ 16 3/16"
Diagonal "Square-Up" Finder
Perfect Diagonal (C)
43.27
~ 43 1/4"
Segmented Turning
Miter Angle:
15.00°
Edge Length:
2.61 in
~ 2 5/8"
Baluster Spacing
Balusters
9
Actual Space
3.45 in
~ 3 7/16"
Layout O.C.
4.95 in
~ 4 15/16"
Arc Radius Finder
Calculated Radius
20.00
~ 20"
Drills, Taps & Pilot Holes
Pilot Drill
1/16"
Clearance
1/8"
Clearance Hole (Standard)
#25 (0.1495")
Weekend Warrior Alts
Fraction: 5/32"
Metric: 3.8mm
Tap Drill (75% Thread)
#36 (0.1065")
Weekend Warrior Alts
Fraction: 7/64"
Metric: 2.7mm
A Note on Bit Sizing (e.g. "F", "#25")
Standard shop bits include Fractions, Letters (A-Z), and Numbers (#1-80). If you lack precise Letter/Number bits, use the "Weekend Warrior" alternatives above.
CNC Feed & Speed Estimator
Adjusted Feed Rate (IPM)
180
Pro Rule of Thumb:
- DOC Factor: For every 1x Bit Diameter deeper you cut, reduce feed rate by ~25%.
- Compression: Top/Bottom clean cut. Must engage the 'down' spiral on the first pass (usually > 1/4" depth).
- Aluminum: Keep RPM high, DOC very shallow (0.01" - 0.04"), and listen for chatter.
Nominal vs. Actual Lumber
| Nominal | Actual (in) | Metric (mm) |
|---|---|---|
| 1 x 4 | 3/4 x 3 1/2 | 19 x 89 |
| 1 x 6 | 3/4 x 5 1/2 | 19 x 140 |
| 1 x 8 | 3/4 x 7 1/4 | 19 x 184 |
| 2 x 4 | 1 1/2 x 3 1/2 | 38 x 89 |
| 2 x 6 | 1 1/2 x 5 1/2 | 38 x 140 |
| 2 x 8 | 1 1/2 x 7 1/4 | 38 x 184 |
| 4 x 4 | 3 1/2 x 3 1/2 | 89 x 89 |
Project Weight Estimator
Estimated Weight
29.0 lbs
Decimal to Nearest 16th
Nearest 16th
6 3/16"
Error: -0.005"