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Board foot calculator for lumber and timber

Board foot calculator: board feet, linear feet, volume and cost for a stack of lumber, at nominal size and at the dressed size of a 2x4, 2x6 and more.

Diperbarui Contoh terverifikasi: 3

Lumber yards price softwood by nominal size; turn off for rough-sawn or metric timber measured as is.
$
Coba
Board foot kayu
BF
Board foot kayu: 80 BF
Tempat desimal maksimum: 2; Terdekat, jika berjarak sama menjauhi nol
Board feet at dressed size
55BF
Dressed size
1.5 × 5.5 in
Linear feet
80ft
Linear metres
24.38m
Volume at the sizes entered
0.1888m³
Cost
$75.00

10 pieces of 2 × 6 in × 8 ft come to 80 board feet and 80 linear feet; the dressed wood is 55 BF.

Cross-section

1.5 × 5.5 inNominal 2 × 6 in (grey), dressed size inside6 in2 in
Cara menghitung S

  1. Board foot kayu

    2×6×812×10=80 BF\frac{2 \times 6 \times 8}{12} \times 10 = 80\ \text{BF}

    One board foot is 144 in³: a piece 1 in thick, 12 in wide and 1 ft long.

  2. At the dressed size

    1.5×5.5×812×10=55 BF\frac{1.5 \times 5.5 \times 8}{12} \times 10 = 55\ \text{BF}

    Softwood is sold by nominal size; this is the wood you actually get.

  3. Linear feet

    8×10=80 ft8 \times 10 = 80\ \text{ft}

  4. Cost

    10×7.5=75.0010 \times 7.5 = 75.00

Tentang Board foot calculator for lumber and timber

A board foot is 144 cubic inches of wood, a piece 1 in thick, 12 in wide and 1 ft long. Board feet for a stack are thickness (in) × width (in) × length (ft) ÷ 12 × pieces. Linear feet are length × pieces, and cost follows the basis the yard prices by: per piece, per board foot or per linear foot.

The default, ten 2 × 6 boards 8 ft long, is 80 board feet and 80 linear feet, costing 75.00 at 7.50 each. Softwood board feet are counted on the nominal size, but a dry 2 × 6 is dressed to 1½ × 5½ in, so the wood delivered is 55 board feet.

Turn off nominal sizing for rough-sawn hardwood or metric timber, which is measured as it is. Metric pieces convert at 1 board foot = 2.359737216 litres.

Contoh penyelesaian

Ten 2 × 6 × 8 ft at 7.50 each

Thickness
2 in
Lebar
6 in
Panjang
8 ft
Pieces
10
Price is
Per piece
Price
7.5
Board foot kayu
80 BF
Board feet at dressed size
55 BF
Linear feet
80 ft
Cost
75.00
Dressed size
1.5 × 5.5 in

Sumber pemeriksaan: Hand calculation: 2 × 6 × 8 / 12 = 8 BF × 10 = 80; dressed 1.5 × 5.5 × 8 / 12 × 10 = 55 (PS 20 sizes)

Edge: 1 × 12 in × 1 ft is one board foot

Thickness
1 in
Lebar
12 in
Panjang
1 ft
Pieces
1
Price is
Per board foot
Price
4.5
Board foot kayu
1 BF
Board feet at dressed size
0.7 BF
Cost
4.50

Sumber pemeriksaan: Definition: 1 BF = 144 in³ = 1 in × 12 in × 12 in; dressed 0.75 × 11.25 × 12 / 144 = 0.703125

Metric 50 × 150 mm × 3 m timber, 20 pieces, per linear foot

Thickness
50 mm
Lebar
150 mm
Panjang
3 m
Pieces
20
Sizes are nominal (a 2 × 6 is really 1½ × 5½ in)
tidak
Price is
Per linear foot
Price
2
Board foot kayu
190.7 BF
Volume at the sizes entered
0.45 m³
Linear feet
196.85 ft
Cost
393.70

Sumber pemeriksaan: Python decimal: 0.05 × 0.15 × 3 × 20 = 0.45 m³ ÷ 0.002359737216 m³ per BF = 190.70; 60 m ÷ 0.3048 = 196.85 ft × 2

Pertanyaan

How do you calculate board feet?

Multiply thickness in inches by width in inches by length in feet, then divide by 12. A 2 × 6 that is 8 ft long is 2 × 6 × 8 ÷ 12 = 8 board feet, so ten of them are 80. With all three sides in inches, divide by 144 instead: a board 1 × 12 × 12 in is exactly 1 board foot.

Do you use nominal or actual size for board feet?

Nominal size for surfaced softwood: a 2 × 4 is counted as 2 × 4 in although it measures about 1½ × 3½ in. Hardwood is measured at its actual size, and rough hardwood thickness is given in quarters, 4/4 for 1 in and 8/4 for 2 in. With nominal sizing on, this calculator shows both: ten 2 × 6 × 8 ft are 80 BF nominal and 55 BF dressed.

What are the actual dimensions of a 2x4?

1½ × 3½ in (38 × 89 mm) once dried and planed. Other 2× sizes lose ½ in of width up to 6 in and ¾ in above that: a 2 × 6 is 1½ × 5½, a 2 × 8 is 1½ × 7¼, a 2 × 10 is 1½ × 9¼ and a 2 × 12 is 1½ × 11¼ in. A nominal 1 in board is ¾ in thick, and a 4 × 4 is 3½ × 3½ in.

How many board feet are in a cubic metre?

423.78. One board foot is 144 in³, exactly 2.359737216 litres, and 1 m³ ÷ 0.002359737216 m³ = 423.776. The metric example uses this: 20 pieces of 50 × 150 mm timber 3 m long are 0.45 m³, which is 190.70 board feet.

What does MBF mean in lumber pricing?

MBF means 1,000 board feet; MFBM and MBFT mean the same, and MMBF is a million board feet. A thousand board feet is 83.33 ft³, or 2.36 m³. A price of 600 per MBF is 0.60 per board foot, so an 8-board-foot 2 × 6 × 8 ft costs 4.80 at that rate.

Seberapa akurat “Board foot calculator for lumber and timber”?

Akurasi bergantung pada masukan dan asumsi metode. Aritmetika desimal memakai 50 digit signifikan, tetapi perkiraan, metode numerik dan data sumber bisa kurang presisi; pembulatan yang ditampilkan tidak menghilangkan batasan itu. Contoh penyelesaian yang diperiksa dengan sumber independen: 3. Misalnya, “Ten 2 × 6 × 8 ft at 7.50 each” diperiksa dengan Hand calculation: 2 × 6 × 8 / 12 = 8 BF × 10 = 80; dressed 1.5 × 5.5 × 8 / 12 × 10 = 55 (PS 20 sizes).

Dari mana metode ini berasal?

USDA Forest Products Laboratory — Wood Handbook (FPL-GTR-282), lumber sizes and measurement; Board foot — 144 in³, exactly 2.359737216 L; NIST Voluntary Product Standard PS 20 — American Softwood Lumber Standard (dressed sizes).

Tentang kalkulator ini

BF=tin×win×Lft12×pieces\text{BF} = \frac{t_{\text{in}} \times w_{\text{in}} \times L_{\text{ft}}}{12} \times \text{pieces}

Sumber

  1. USDA Forest Products Laboratory — Wood Handbook (FPL-GTR-282), lumber sizes and measurement
  2. Board foot — 144 in³, exactly 2.359737216 L
  3. NIST Voluntary Product Standard PS 20 — American Softwood Lumber Standard (dressed sizes)

Diperiksa dengan referensi

Kalkulator ini mencakup 3 contoh perhitungan dengan jawaban dari sumber independen. Contoh tersebut dijalankan dalam rangkaian pengujian dan dapat Anda jalankan di sini juga.

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