Construction Calculators
Estimate materials for concrete, paint, flooring, lumber, fencing, and wallpaper. Accurate math, imperial and metric support, zero signup.
Concrete Calculator
Calculate how much concrete you need for slabs, footings, and pours. Get cubic yards, cubic meters, and bag counts.
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Paint Coverage Calculator
Estimate how much paint you need based on room dimensions, doors, windows, and number of coats.
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Flooring / Tile Calculator
Calculate tiles or planks needed for your floor, including waste factor and box estimates.
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Lumber Estimator
Estimate board feet and number of boards needed for decks, fences, framing walls, or shelving.
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Common Lumber Dimensions Reference
| Nominal | Actual (in) | Board Feet per 8ft | Common Use |
|---|---|---|---|
| 2 x 4 | 1.5 x 3.5 | 5.33 | Framing, studs |
| 2 x 6 | 1.5 x 5.5 | 8.00 | Decking, joists |
| 2 x 8 | 1.5 x 7.25 | 10.67 | Floor joists, headers |
| 2 x 10 | 1.5 x 9.25 | 13.33 | Floor joists, beams |
| 2 x 12 | 1.5 x 11.25 | 16.00 | Ridge boards, stair stringers |
| 4 x 4 | 3.5 x 3.5 | 10.67 | Posts, supports |
Fence Post Spacing Calculator
Plan your fence layout with accurate post counts, rail sections, and picket estimates.
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Wallpaper Calculator
Estimate wallpaper rolls needed, accounting for doors, windows, and pattern repeat waste.
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