Inputs
Default represents mild steel. Adjustable for alloys.
Switching units converts inputs on the fly (1 in = 25.4 mm).
Applies to calculated outputs.
| Label | Thickness | Width | Length | Qty | Remove |
|---|
Dimensions are in selected units. Quantity multiplies per-plate weight.
Totals
Total items
0
Total weight (kg)
0
CSV/PDF export the results table below for record keeping and quotes.
Results
| # | Label | Thickness | Width | Length | Qty | Density (g/cm³) | Weight per plate (kg) | Total weight (kg) |
|---|
Example Data Table
These examples populate the input grid on load. You can edit or remove them.
| Label | Thickness (mm) | Width (mm) | Length (mm) | Qty |
|---|---|---|---|---|
| Plate A | 10 | 1000 | 2000 | 3 |
| Plate B | 6 | 1250 | 2500 | 2 |
| Plate C | 12 | 1500 | 3000 | 1 |
Formula Used
Weight is derived from volume and density. Converting dimensions to centimeters and using density in g/cm³:
Volume (cm³) = thickness(mm) × width(mm) × length(mm) × (0.1 cm/mm)³
Mass (g) = Volume (cm³) × density (g/cm³)
Weight (kg) = Mass (g) ÷ 1000
Combined directly in millimeters:
Weight (kg) = thickness × width × length × density × 1e-6
Density defaults to 7.85 g/cm³ (mild steel). Edit density to match your alloy if needed.
How to Use
- Select Units (mm or inches). Changing units converts existing inputs.
- Choose a density preset or enter a custom density in g/cm³.
- Use the input grid to add plates: enter thickness, width, length, and quantity.
- Weights compute automatically; totals update live. Adjust Rounding for display precision.
- Use Download CSV or Download PDF to export the results table.
- Review the chart to compare weights per item.
All results are informational. Verify against your fabrication and logistics requirements.
FAQs
Mild carbon steel is typically about 7.85 g/cm³. Stainless grades are often around 8.0 g/cm³. Check material certificates for exact values.
Yes. Switch the Units selector to inches. The tool converts all existing inputs between inches and millimeters using 1 in = 25.4 mm.
No. The calculation assumes solid rectangular plates. If you have large holes or coatings, adjust dimensions or weight allowances accordingly.
Accuracy depends on your input precision and true material density. Expect small variance due to mill tolerances. For critical work, confirm by weighing.
Export the results table via CSV or PDF and keep a copy with your job folder or quote.
This calculator targets rectangular plates. For disks or rings, use the appropriate geometric area to compute volume, then multiply by density as shown in the formula section.