Try the Material Weight Calculator
Calculate the weight of plates, round and square bars, flat bar, round and rectangular tube, hex bar, sphere and pipe in kg and lb for 40 materials (steel.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
What is the Material Weight Calculator?
Choose a shape — plate, round bar, square bar, flat bar, round tube, rectangular tube, hex bar, sphere, hollow cylinder or a known volume — enter the dimensions in mm, cm, m, inches or feet, pick one of 40 materials (carbon and stainless steel, tool steel, cast iron, several aluminium alloys, copper, brass, bronze, titanium, zinc, lead, nickel, magnesium, precious metals, concrete, glass, woods, common plastics and 3D-printing filaments) or type a custom density, and the calculator returns the weight per piece and for the whole quantity in kg and lb, plus the volume.
Add a price per kg to get the material cost. A density reference table lists every material in g/cm³, kg/m³ and lb/in³. It is useful for estimating shipping weight, machining stock cost, crane loads, centre of gravity inputs for CAD assemblies or the printed weight of a part.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Plates, bars, tubes, pipes, hex, sphere or a known volume.
Metals, woods, plastics, filaments, concrete and more, plus custom density.
Per piece and per batch with volume in cm³ and in³.
Material cost from price per kg.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This engineering calculator | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
How is weight calculated?
Volume × density, with volume from standard formulas for each shape.
Are the densities exact?
They are typical values; alloys vary by a few percent.
Can I use pounds and inches?
Yes — pick inches or feet as the dimension unit; the answer is given in kg and lb.
Does it include coatings?
No.
How do I use the Material Weight Calculator?
1. Select the shape and unit. 2. Pick the material or enter a custom density. 3. Enter the dimensions and quantity. 4. Read the weight, volume and cost.
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Weight from dimensions and density for plates, bars, tubes, pipes and more. Free to use.
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