板英尺怎么算？

厚度（英寸）乘宽度（英寸）乘长度（英尺）再除以 12。1 × 6 英寸、长 8 英尺的板材为 (1 × 6 × 8) ÷ 12 = 4 板英尺。

板英尺和线性英尺一样吗？

不一样。线性英尺只量长度，板英尺量体积。12 英尺长的 1×4 是 12 线性英尺，却只有 4 板英尺。

用名义尺寸还是实际尺寸？

用名义尺寸。2×4 按 2 乘 4 计算，尽管实测只有 1.5 × 3.5，因为你付的是刨光之前的木料。

木材上的 4/4 是什么意思？

指毛料厚度的四分之一英寸计数。4/4 为一英寸，5/4 为 1.25 英寸，8/4 为 2 英寸。双面刨光后 4/4 通常剩约 21 毫米。

为什么锯木厂算出的板英尺比我量的多？

多数厂家按毛料厚度计费，并把宽度向上取整到整英寸。量得 15.9 厘米宽的板会按 17.8 计价，这两种做法都是行业惯例。

板英尺计算器

把木材尺寸换算成板英尺——硬木实际计价所用的单位——支持任意厚度、宽度、长度和数量。

公式与数据最后核对于 2026年8月6日 — Cosyslabs

输入

厚度(in)

宽度(in)

长度(ft)

件数

每板英尺单价（选填）($)

Result

Board feet

4.00 BF

Board feet per piece

4.00 BF

Linear feet: 8.00 ft
Pieces: 1
Nominal size: 1.0" × 6.0" × 8.0'

Diagram

Estimates only. Verify with a licensed contractor or supplier before purchasing. Rough Estimator! is not responsible for shortages, overages, or material variances. See our methodology for formulas and sources.

公式

板英尺 = (厚 in × 宽 in × 长 ft) ÷ 12

参考资料

Measure what the tool asks for
This calculator works from 厚度 in in, 宽度 in in and 长度 in ft. Measure the finished area you are covering, not the material — an estimate is only as good as the dimensions you feed it.
What it does with those numbers
板英尺 = (厚 in × 宽 in × 长 ft) ÷ 12 Every figure on the page comes out of that one expression, so you can check it by hand.
Where the numbers come from
The constants are taken from USDA Forest Products Laboratory — Wood Handbook and National Hardwood Lumber Association — Rules for the Measurement of Hardwood, linked in full below. If a figure here disagrees with your supplier's spec sheet, use the spec sheet — it describes the product you are buying.
What this will not tell you
This is a material takeoff, not a bid. It does not price labour, permits, delivery, equipment hire or site preparation, and it assumes a straightforward layout. Complex cuts, difficult access and awkward shapes all cost more than the geometry suggests.

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常见问题

144 立方英寸的木材：厚 1 英寸、宽 12 英寸、长 12 英寸的一块。它衡量的是体积而不是长度。

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Cite this page

Cosyslabs. (2026). 板英尺计算器. Rough Estimator!. https://roughestimator.com/zh/board-foot-calculator

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