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🪨 Aggregate Calculator
Calculate the weight of aggregate (gravel, sand, stone) in Kg & Ton — Easy and Fast
📐 Enter Dimensions
📖 What is the Aggregate Calculator?
The Aggregate Calculator on CheckBillOnline.com is a free, easy-to-use tool designed for homeowners, civil engineers, contractors, and construction professionals who need to estimate the weight of construction aggregate—such as sand, gravel, crushed stone, or recycled concrete—required for any project. Whether you are building a foundation, laying a driveway, creating drainage systems, or preparing base layers for roads and railways, knowing the exact aggregate weight is crucial for budgeting and material procurement.
This tool allows you to enter the Length, Breadth, and Depth of the area in feet and instantly displays the total aggregate weight in both Kilograms (Kg) and Metric Tons (Ton). No guesswork, no complex manual calculations — just accurate results in seconds.
Aggregates are one of the most mined materials in the world and serve as essential reinforcement in composite materials like concrete and asphalt. They are also widely used in drainage applications — including French drains, septic drain fields, retaining wall drains, and roadside edge drains — due to their high hydraulic conductivity.
🔢 Formula for Calculating Aggregate
The calculation follows these steps:
b = a + ( a × (52.4 / 100) )
c = (4 / 7) × b
Aggregate in Kg = c × 1350
Aggregate in Ton = Aggregate in Kg / 1000
🛠️ How to Use
- Enter the Length of the area in feet.
- Enter the Breadth (width) of the area in feet.
- Enter the Depth of aggregate needed in feet.
- Click "Calculate" — results appear instantly.
- To start over, click "Reset".
📊 Example Calculations
| Length (ft) | Breadth (ft) | Depth (ft) | Weight (Kg) | Weight (Ton) |
|---|---|---|---|---|
| 10 | 8 | 0.5 | — | — |
| 20 | 15 | 1 | — | — |
| 50 | 30 | 2 | — | — |
❓ Frequently Asked Questions
🏠 Roof Pitch Calculator
Calculate roof pitch, slope percentage, and angle in degrees — Easy and Fast
📐 Enter Rise & Run
📖 What is the Roof Pitch Calculator?
The Roof Pitch Calculator on CheckBillOnline.com is a free online construction tool that helps homeowners, architects, roofers, and civil engineers quickly determine the pitch, slope percentage, and angle in degrees of any roof. Roof pitch is a critical measurement in construction — it determines how steeply a roof is inclined and directly impacts weather drainage, material selection, and structural design.
Roof pitch is expressed as the number of inches a roof rises for every 12 inches of horizontal run. For example, a roof that rises 6 inches for every 12 inches of horizontal distance has a 6-in-12 pitch. A flat roof has a pitch of zero, while steep roofs can exceed a 12-in-12 pitch. Pitched roofs are far more effective at draining rain and snow compared to flat roofs, which can develop structural pressure from standing water.
This calculator is used in factories, workshops, warehouses, theaters, auditoriums, and residential homes — anywhere a sloped roof is required. It accounts for the climate, covering material, and span of the structure.
🔢 Formula for Roof Pitch
Slope (%) = (Rise / Run) × 100
Angle (Degree) = arctan(Rise / Run) × (180 / π)
🛠️ How to Use
- Enter the Rise — the vertical height of the roof in feet.
- Enter the Run — the horizontal distance (half the span) in feet.
- Click "Calculate" to see the Pitch, Slope %, and Angle.
- Click "Reset" to clear all fields and start again.
📊 Example Calculations
| Rise (ft) | Run (ft) | Pitch | Slope % | Angle ° |
|---|---|---|---|---|
| 6 | 12 | — | — | — |
| 4 | 12 | — | — | — |
| 9 | 12 | — | — | — |
❓ Frequently Asked Questions
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