木板铺设计算器 — 估算铺板材料用量
输入甲板尺寸、木板宽度、间距、木板长度和损耗系数，即时计算横向所需木板数量、总线性英尺和需购买的木板数量。支持 2×6、2×4、复合材料和自定义木板宽度。
Deck Board Calculator
Estimate boards, linear feet, and board count for any deck size
Default: 1/8" (0.125)
Recommended: 10% for simple decks, 15% for diagonal patterns
常见问题
如何计算需要多少块露台板材？
将露台宽度（英尺）除以有效板宽（板宽 + 间隙，转换为英尺），得到横向板数。乘以露台长度得到线性英尺数。加上废料系数（通常 10%），再除以板材长度，得到需要购买的总板数。
12×16 的露台需要多少块 2×6 的板材？
2×6 板材的实际宽度为 5.5 英寸。间隙 1/8 英寸（0.125"），有效宽度为 5.625 英寸 = 0.469 英尺。横向板数 = ceil(12 / 0.469) = 26。线性英尺 = 26 × 16 = 416 lf。加上 10% 废料 = 457.6 lf。使用 8 英尺板：ceil(457.6 / 8) = 58 块。
露台板之间的标准间隙是多少？
湿安装防腐木材的标准间隙为 1/8 英寸（0.125"）。随着板材干燥收缩，间隙会扩大至约 1/4 英寸。对于窑干或复合材料，安装时留 1/4 英寸间隙。复合露台板材请始终查看制造商规格，因为隐藏式卡扣有内置间隙。
露台应使用多大的废料系数？
平行铺设的简单矩形露台使用 10%。45 度斜铺使用 15%。鱼骨纹或画框边框使用 15-20%。L 形不规则露台适用 10-12%。多买一些总比项目中途不够用要好。
2×6 露台板的实际宽度是多少？
名义 2×6 板的实际宽度为 5.5 英寸（139.7 毫米），实际厚度为 1.5 英寸。木材按名义尺寸出售，但所有计算应使用实际（加工后）尺寸。同样，2×4 的实际宽度为 3.5 英寸，2×8 实际宽度为 7.25 英寸。
200 平方英尺的露台需要多少线性英尺的板材？
200 平方英尺的露台，使用 2×6 板（5.5" 宽）和 1/8" 间隙：有效板宽 = 0.469 英尺。线性英尺 = (露台宽度 / 0.469) × 露台长度。10×20 英尺的露台：横向板数 = ceil(10/0.469) = 22，线性英尺 = 22 × 20 = 440 lf。加 10% 废料 = 484 lf。除以你的板材长度得到数量。
能用这个计算器计算复合材料露台板吗？
可以。在板宽字段输入复合板的实际面宽。对于隐藏式卡扣系统（Trex、TimberTech、Fiberon），使用制造商指定的间隙——通常为 3/16 英寸，或卡扣夹内置的间隙。至少加 10% 废料以应对端部截切。
选择什么长度的板材可以最大限度减少废料？
选择能整除或略长于露台长度的板材。16 英尺的露台，使用 16 英尺板材端部零废料——每行一块板。14 英尺的露台，16 英尺板材每块浪费 2 英尺；8 英尺板材需要两块（一块浪费 2 英尺）。使用计算器比较不同选项的总废料。
Deck Board Calculator: Formula, Board Sizes & Gap Guide
This deck board calculator estimates the number of decking boards you need based on your deck dimensions, board width, gap spacing, and a waste factor. It outputs deck area, boards across, total linear feet, and the final board count to purchase.
Deck Board Formula
Boards Across the Deck
The number of boards laid perpendicular to the deck length:
Board width and gap are in inches, converted to feet by dividing by 12.
Linear Feet Required
Boards to Purchase
Effective board width = (5.5 + 0.125) / 12 = 0.469 ft
Boards across = ⌈12 / 0.469⌉ = 26
Linear feet = 26 × 16 = 416 lf
With 10% waste = 457.6 lf
Board count = ⌈457.6 / 8⌉ = 58 boards
Common Deck Board Sizes
Lumber is sold by nominal size, but the actual dimensions are smaller after milling. Use the actual width when calculating:
| Nominal Size | Actual Width | Notes |
|---|---|---|
| 2×4 | 3.5 inches | Narrow boards, more gaps, lighter look |
| 2×6 | 5.5 inches | Most common; good balance of strength and appearance |
| 5/4×6 (Radius Edge) | 5.5 inches | Thinner profile (1"), rounded edges, popular composite |
| 2×8 | 7.25 inches | Wider boards, fewer seams, premium look |
| Composite 1×6 | 5.5 inches | Trex, TimberTech — often includes hidden fastener gap |
Gap Spacing Guide
Gaps between deck boards allow for drainage, airflow, and wood expansion. The right gap depends on material and climate:
| Gap Size | Use Case |
|---|---|
| 1/8" (0.125") | Standard for pressure-treated and cedar when installed wet — boards shrink to ~1/4" gap as they dry |
| 1/4" (0.25") | Dry or kiln-dried lumber; hot, dry climates |
| 3/16" (0.1875") | Composite decking with face screws |
| Hidden fastener spec | Composite with hidden clips — gap built into clip (~3/16" to 1/4") |
Joist Spacing & Board Orientation
Joist spacing determines the required board thickness. Standard guidelines for pressure-treated lumber:
- 16" o.c. joists — 5/4×6 or 2×6 boards run perpendicular
- 24" o.c. joists — 2×6 minimum; 2×8 preferred for stiffness
- Diagonal pattern — reduce joist spacing by 25% (e.g., 16" → 12") or use thicker boards
- Herringbone / parquet — requires blocking between joists; add 15–20% waste factor
Waste Factor Recommendations
| Pattern / Situation | Recommended Waste % |
|---|---|
| Simple rectangle, parallel boards | 10% |
| L-shape or irregular deck | 10–12% |
| Diagonal (45°) pattern | 15% |
| Herringbone / picture frame | 15–20% |
| Multiple angles / curves | 20%+ |
Related Tools
- Board Feet Calculator — calculate lumber volume in board feet for purchasing and pricing.
- Concrete Calculator — estimate concrete volume for deck footings and piers.
- Stair Calculator — calculate rise, run, and stringer length for deck stairs.