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Calculate weight from dimensions with our free Size to Weight Calculator. Find material weight using volume, density, shape, and quantity.
Need to know how much an object weighs based on its size? Our Size to Weight Calculator makes this easy. It helps you calculate weight from dimensions, material density, and quantity in seconds.
You don't need to work through complex math. Just enter the object's measurements, select a material, and get your result.
We developed this calculator so users can easily calculate Size to Weight for different materials and shapes. It works for aluminum, steel, copper, wood, plastic, concrete, and more.
Whether you're planning a construction project, estimating shipping weight, or checking material costs, this tool can help. It supports boxes, cubes, cylinders, spheres, and hollow cylinders.
The main formula uses volume and material density.
Total Mass = Volume × Material Density × Quantity
Or:
M = V × ρ × Q
Here, M means total mass in kilograms. V means volume in cubic meters. ρ means material density in kg/m³. Q means the number of objects.
The volume formula depends on the object's shape.
Rectangular Box:
Volume = Length × Width × Height
Cube:
Volume = Side × Side × Side
Cylinder:
Volume = π × Radius² × Height
Sphere:
Volume = (4 ÷ 3) × π × Radius³
Hollow Cylinder:
Volume = π × Height × (Outer Radius² − Inner Radius²)
Our Material Weight Calculator converts all dimensions into meters. It also converts density into kg/m³ before calculating the result.
Follow these five simple steps to calculate weight from size.
Select an Object Shape: Choose a rectangular box, cube, cylinder, sphere, or hollow cylinder.
Enter Dimensions: Add the required length, width, height, or radius. Select your preferred measurement unit.
Select a Material: Choose a preset material such as aluminum, steel, copper, or wood.
Enter Density and Quantity: You can use the preset density or enter a custom value. Then add the number of objects.
Calculate Weight: Click the calculate button. The calculator displays volume, material density, quantity, and total mass in kilograms.
Let's calculate the weight of five aluminum boxes.
Suppose each box has a length of 100 cm, a width of 50 cm, and a height of 20 cm. Aluminum has a preset density of 2,700 kg/m³.
Step 1: Convert the dimensions into meters.
Length = 100 ÷ 100 = 1 m
Width = 50 ÷ 100 = 0.5 m
Height = 20 ÷ 100 = 0.2 m
Step 2: Calculate the volume.
Volume = Length × Width × Height
Volume = 1 × 0.5 × 0.2
Volume = 0.1 m³
Step 3: Calculate the weight of one box.
Mass = Volume × Material Density
Mass = 0.1 × 2,700
Mass = 270 kg
Step 4: Calculate the total weight.
Total Mass = 270 × 5
Final Result = 1,350 kg
So, five aluminum boxes have a combined mass of 1,350 kg.
Our Size to Weight Calculator offers a simple way to estimate material mass using dimensions and density. It supports five common shapes, multiple measurement units, and several preset materials.
You can use it as a Rectangular Box Weight Calculator or calculate weight for cylinders, cubes, spheres, and hollow cylinders. Just enter the correct measurements and density to get a useful result.
Remember, actual material weight may vary due to material grade, moisture, and manufacturing differences. For shipping and engineering work, use verified material specifications.
A Size to Weight Calculator estimates an object's mass using its dimensions, volume, and material density. It supports different shapes and materials.
First, calculate the object's volume using its shape formula. Then multiply the volume by material density. Multiply again by quantity if you have multiple objects.
Mass equals volume multiplied by density. This is also known as the Volume × Density formula.
Yes. You can select preset steel or aluminum density values. You can also enter a custom density for other materials.
No. Dimensions alone cannot determine an object's mass. You need its material density or another reliable way to establish its mass per unit volume.
Yes. It subtracts the inner cylindrical volume from the outer cylindrical volume before calculating mass.
Yes. The calculator converts measurements and density into standard units and displays the total mass in kilograms (kg).