1) Inputs
All dimension fields will use the selected system.
kg/m³
Typical mild steel density ≈ 7850 kg/m³.
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Approximate area: t × (A + B − t)
mm
mm
mm
mm
Approx area: tw(h−2tf) + 2 tf b
mm
mm
mm
mm
Approx area: tw(h−2tf) + 2 tf b
2) Results
density: 7850 kg/m³
| # | Shape | Dimensions | Length | Unit | Weight (kg) | Weight (lb) | |
|---|---|---|---|---|---|---|---|
| Total | 0.000 | 0.000 | |||||
Formulas Used
Weight = Volume × Density. Volume = Cross‑sectional Area × Length.
- Plate/Rect: A = width × thickness
- Round bar: A = π (D/2)²
- Hex bar (AF): A = (√3 / 2) × AF²
- Square bar: A = side²
- Round tube: A = (π/4)(OD² − ID²), ID = OD − 2×wall
- Square tube: A = OD² − (OD − 2×wall)²
- Angle: A ≈ t × (A_leg + B_leg − t)
- Channel: A ≈ tw(h − 2tf) + 2 tf b
- I‑Beam: A ≈ tw(h − 2tf) + 2 tf b
All dimensions converted to meters for volume; output shown in kilograms and pounds (1 kg = 2.20462262 lb).
How to Use
- Select your Unit System and confirm the Density.
- Choose a Shape, enter its dimensions and Length.
- Click Add Item to append the calculation to the list.
- Repeat for multiple items to see Totals update automatically.
- Use Download CSV or Download PDF to export results.
Note: Values are approximate; actual weights vary with mill tolerances, coatings, and composition.
Example Data
| # | Shape | Dimensions (mm) | Len (mm) | Approx Weight (kg) |
|---|---|---|---|---|
| 1 | Plate | W 100 × T 10 | 1000 | 7.85 |
| 2 | Round Bar | D 50 | 1000 | 15.41 |
| 3 | Round Tube | OD 60 × WT 3 | 1000 | 4.27 |
| 4 | Angle | Legs 50,50 × T 6 | 1000 | 6.78 |
FAQs
A common engineering value is 7850 kg/m³. For specific grades or finishes, check mill certificates or adjust density accordingly in the input.
Yes. Choose the unit system at the top. All dimension labels update, and the calculator converts internally to meters to compute weight.
Formulas use idealized rectangles and circles. Real sections have corner radii and tapers, so results are approximate but useful for estimating.
Use the CSV button for spreadsheets or the PDF button for a formatted report containing your current items and totals.
Enter one shape at a time and press Add Item. Use Load Example as a template, or duplicate rows by editing and re‑adding.