Ruang kerja kalkulator

Kalkulator Kaki Persegi Penebat
— Percuma & Segera

Masukkan dimensi Penebat anda untuk mengira jumlah kaki persegi, menganggar bahan lantai dan merancang projek anda.

RECTANGLE DIMENSIONS
Faktor Pembaziran Bahan pilihan
%
Anggaran Kos Bahan pilihan
ft²
Keputusan
Kaki Persegi
Inci Persegi
Ela Persegi
Meter Persegi
Ekar

Gunakan Kalkulator Kaki Persegi Penebat untuk mengira luas Penebat. Masukkan dimensi Penebat dan dapatkan keputusan segera dalam kaki persegi, ela persegi, meter persegi dan ekar. Anggarkan keperluan bahan lantai, permaidani dan jubin dengan pengiraan kos terbina.

Terokai Kalkulator Kaki Persegi Kami

Pilih kalkulator khusus untuk projek anda — bilik, bentuk, bahan, kawasan luar dan penukaran unit.

What is insulation square footage?

Insulation square footage is the total wall, ceiling, and attic area receiving insulation. Measure each surface separately and sum the areas.

1 ft² = 144 in² 1 ft 1 ft (12 in)

Bermula

Cara Mengira Rakaman Persegi for Insulation

To calculate insulation needs, measure length × height of each wall and ceiling area. Sum all surfaces. Choose R-value based on climate zone. Insulation packages list square footage coverage on the label.

1. Measure all surfaces

Measure length × height of each wall, ceiling, or attic surface in feet.

2. Choose R-value

Higher R-value means thicker insulation. Climate zones 5-7 need R-30+ for attics.

3. Convert to bags or batts

Divide total area by package coverage on the label. Round up to full packages.

20 ft 15 ft 300 ft² Area: 300 ft² Order: 330 ft² +10% waste factor included

Rujukan pantas

Rujukan

1 ekar = 43,560 kaki persegi
1 ela persegi = 9 kaki persegi
1 meter persegi = 10.764 kaki persegi
1 inci persegi = 0.00064516 kaki persegi
Area: 300 ft² × Price: $2.80 / sq ft Total: $840.00 estimated material cost

Harga bahan

Kira Kos Bahan

Fiberglass batts cost $0.50-1.50 per sq ft. Spray foam costs $1-3 per sq ft. Multiply area by price per unit for material total.

Terdapat 2 langkah untuk mengira kos bahan:

  1. Enter the price per bag or roll of insulation and the kaki persegi of coverage per package.
  2. The Kalkulator Kaki Persegi divides total area by package coverage and multiplies by price for total cost.

Order 5-10% extra to fill gaps around studs and obstructions.

Formula asas

Formula Asas untuk Luas

Length Width L × W Area = L × W Example: 12 ft × 10 ft = 120 ft²

Luas ialah jumlah ruang yang diduduki oleh bentuk 2 dimensi. Bentuk itu boleh jadi lantai, dinding, taman permainan atau padang. Formula paling mudah untuk luas digunakan untuk sebarang bentuk segi empat tepat:

Area = Length × Width

Ukur panjang dan lebar ruang dalam kaki. Darabkan dua nilai tersebut untuk mendapatkan luas dalam kaki persegi. Bilik segi empat tepat yang 12 kaki (3.66 meter) panjang dan 10 kaki (3.05 meter) lebar mempunyai luas 120 sq ft (11.15 sq m).

Ela persegi ialah luas yang diukur dalam ela, dan meter persegi ialah luas yang diukur dalam meter. Ukur dalam kaki, cari luas dalam kaki persegi, kemudian tukar kepada unit yang anda perlukan.

Untuk bilik bentuk L, bahagikan lantai kepada 2 bahagian segi empat tepat, kira setiap luas, dan tambahkan keputusan. Tukarkan semua ukuran kepada unit yang sama sebelum mendarab, jika dimensi anda dalam unit berbeza seperti inci dan kaki.

W × H − window − doors Height Wall Width

Calculating Segi Empat Sama Footage for Walls

Measure the wall width and the wall height in feet. Multiply the width by the height to get the total wall area in square feet. Subtract the area of any doors or windows to find the exact paint coverage required. A wall that is 12 feet wide and 8 feet tall has a total area of 96 sq ft. A 3 ft × 4 ft window removes 12 sq ft, leaving 84 sq ft of paintable surface.

To subtract multiple windows of the same size from one wall, multiply the window width by the number of windows. Enter the total as the window width in the Segi Empat Sama Foot Calculator. Height remains the height of one window.

Faktor pembaziran

Menambah 10% Lebihan untuk Bahan

Tambahkan 10% lebihan kepada luas yang dikira untuk mengambil kira pembaziran bahan semasa pemotongan, pecah dan pemadanan corak. Faktor pembaziran ini terpakai untuk lantai, karpet, projek jubin dan bahan landskap.

Luas Asal 100 sq ft
+10%
Jumlah Pesanan 110 sq ft
Total Material = Area × 1.10

Bilik dengan luas lantai 200 sq ft memerlukan 220 sq ft bahan: 200 × 1.10 = 220 sq ft. Tingkatkan lebihan kepada 15% (darab dengan 1.15) untuk corak pemasangan lantai pepenjuru atau projek jubin kompleks dengan banyak potongan. Kalkulator Kaki Persegi termasuk medan faktor pembaziran untuk pengiraan ini.

FAQ

Soalan Lazim

How do I calculate square footage for insulation?

Measure each wall (height x width), subtract windows and doors, then add all wall areas together. Include ceiling area (length x width) if insulating above. A 12x8 ft wall minus a 15 sq ft window = 81 sq ft needing insulation.

How many rolls of insulation do I need?

Divide total square footage by the coverage per roll. Standard R-13 batt rolls cover about 40 sq ft. For 500 sq ft of wall area, you need approximately 13 rolls (500 / 40 = 12.5, round up).

How do I calculate attic insulation square footage?

Measure attic floor length and width, multiply for total area. A 40x30 ft attic needs 1,200 sq ft of insulation. For blown-in insulation, coverage per bag varies by R-value and depth.

Should I subtract windows from insulation calculations?

Yes, subtract all windows, doors, and other openings from wall insulation area. These areas do not need insulation and subtracting them prevents over-ordering material.

How much does insulation cost per square foot?

Batt insulation costs $0.50-1.50 per sq ft, blown-in costs $1-2.50 per sq ft, and spray foam costs $1.50-4.50 per sq ft installed. Higher R-values cost more per square foot.

How do I calculate insulation for a garage?

Measure all exterior walls (height x width) and the ceiling, subtract the garage door area. A typical 2-car garage has about 550-700 sq ft of wall and ceiling area needing insulation.

RUJUKAN

Bacaan Lanjut & Rujukan

Sumber luar yang dipercayai dan bahagian berkaitan di laman ini. Pautan luar membuka rujukan berwibawa di Wikipedia dan agensi kerajaan.

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