1. Measure the area
Record the length and width of your patio, walkway, or wall face in feet. For curved paths, break the area into straight sections or use the trapezoid option.
What is stone coverage area?
Stone coverage area is the total surface measured in square feet that will be covered with stone material. To calculate stone coverage, measure the project length and width in feet and multiply them together. Different stone types have different coverage rates per ton. Flagstone covers 80-100 sq ft per ton at 1.5 inches thick, while river rock covers 50-75 sq ft per ton at 2-3 inches deep. Knowing the exact area helps you order the right amount and get accurate quotes from suppliers.
Memulai
How to Calculate Stone Coverage
To calculate stone coverage, measure the project area in square feet. For rectangular patios and walkways, multiply length by width. For circular features, use the circle formula with the diameter. Add 10% for waste from cutting and fitting irregular stone pieces.
2. Select the shape
Choose Persegi Panjang for straight areas, Lingkaran for round features, or Trapesium for tapered walkways and irregular areas.
3. Estimate materials and cost
View area in square feet. Enter a price per square foot for your stone type to estimate total material cost. Divide by coverage per ton for tonnage estimates.
Referensi cepat
Referensi
1 acre = 43.560 kaki persegi
1 yard persegi = 9 kaki persegi
1 meter persegi = 10,764 kaki persegi
1 inci persegi = 0,00064516 kaki persegi
Rumus dasar
Rumus Dasar untuk Luas
Luas adalah jumlah ruang yang ditempati oleh bentuk 2 dimensi. Bentuknya bisa berupa lantai, dinding, taman bermain, atau lapangan. Rumus paling sederhana untuk luas berlaku untuk bentuk persegi panjang apa pun:
Area = Length × Width
Ukur panjang dan lebar ruang dalam kaki. Kalikan kedua nilai untuk mendapatkan luas dalam kaki persegi. Ruangan persegi panjang yang berukuran 12 kaki (3,66 meter) panjang dan 10 kaki (3,05 meter) lebar memiliki luas 120 sq ft (11,15 sq m).
Yard persegi adalah luas yang diukur dalam yard, dan meter persegi adalah luas yang diukur dalam meter. Ukur dalam kaki, temukan luas dalam kaki persegi, lalu konversikan ke satuan yang Anda butuhkan.
Untuk ruangan bentuk L, bagi lantai menjadi 2 bagian persegi panjang, hitung setiap luas, dan jumlahkan hasilnya. Konversikan semua pengukuran ke satuan yang sama sebelum mengalikan, jika dimensi Anda dalam satuan berbeda seperti inci dan kaki.
Rumus bentuk
Rumus Luas untuk Berbagai Bentuk
The Stone Calculator supports rectangle and circle formulas for patio, walkway, and landscaping stone projects.
Bentuk Persegi Panjang
Calculate stone area for rectangular patios
Menggunakan pengukuran dalam kaki: Area (ft²) = Length × Width. A rectangular patio 20 feet long and 15 feet wide has an area of 300 square feet. At about 90 sq ft per ton of flagstone, this requires about 3.3 tons plus 10% waste.
Bentuk Lingkaran
Calculate stone area for circular features
Menggunakan pengukuran dalam kaki: Area (ft²) = π × radius². A circular patio with a 16-foot diameter (8 ft radius) has an area of about 201 square feet. Use this formula for round fire pit pads, circular garden accents, and decorative stone features.
Faktor limbah
Menambahkan 10% Surplus untuk Material
Tambahkan 10% surplus ke luas yang dihitung untuk memperhitungkan limbah material selama pemotongan, kerusakan, dan pencocokan pola. Faktor limbah ini berlaku untuk lantai, karpet, proyek ubin, dan material pertamanan.
Luas Asli100 sq ft
+10%
Jumlah Pesanan110 sq ft
Total Material = Area × 1.10
Ruangan dengan luas lantai 200 sq ft membutuhkan 220 sq ft material: 200 × 1,10 = 220 sq ft. Tingkatkan surplus menjadi 15% (kalikan dengan 1,15) untuk pola pemasangan lantai diagonal atau proyek ubin kompleks dengan banyak potongan. Kalkulator Kaki Persegi menyertakan bidang faktor limbah untuk perhitungan ini.
FAQ
Pertanyaan yang Sering Diajukan
How do I calculate stone coverage per square foot?
Measure the area length and width in feet, multiply to get square feet. Stone coverage depends on the stone type and thickness. For flagstone, one ton covers about 80-100 sq ft at 1.5 inches thick.
How many square feet does a ton of stone cover?
One ton of flagstone covers 80-100 sq ft at 1-1.5 inches thick. A ton of river rock covers 50-75 sq ft at 2-3 inches deep. A ton of crushed gravel covers 80-100 sq ft at 2 inches deep.
How much does flagstone cost per square foot?
Flagstone costs $3 to $7 per square foot for materials only. Installed flagstone patios cost $15 to $30 per square foot including base preparation, stone, and labor.
How do I calculate stone for a patio?
Measure the patio length and width in feet and multiply to get square footage. Add 10% for waste and cuts. For a 200 sq ft patio, order about 220 sq ft of stone.
How do I calculate stone for a curved walkway?
For curved walkways, multiply the average width by the total length. For circular areas, use the circle calculator with the diameter. For irregular curves, split the path into straight sections.
How much stone do I need for a retaining wall?
Calculate the face area of the wall: height × length = square feet. A wall 3 feet tall and 20 feet long has 60 sq ft of face area. Natural stone for walls costs $10 to $25 per sq ft of face area.