Plate Size Calculator
Enter the plate length, width and thickness, the metal and how many plates. The calculator multiplies the volume by the metal's density to give the weight and area.
- Plate weight
- Area
- Weight per m²
Use the nominal thickness.
Weight = length × width × thickness × density. A 2000 × 1000 × 10 mm mild steel plate weighs 157 kg, because steel weighs 7.85 kg per m² for each millimetre of thickness.
Steel plate weight chart
Mild steel. Search for a thickness.
| Thickness | kg per m² | 2 × 1 m plate |
|---|---|---|
| 3 mm | 23.5 | 47.1 kg |
| 5 mm | 39.2 | 78.5 kg |
| 6 mm | 47.1 | 94.2 kg |
| 8 mm | 62.8 | 125.6 kg |
| 10 mm | 78.5 | 157.0 kg |
| 12 mm | 94.2 | 188.4 kg |
| 15 mm | 117.8 | 235.5 kg |
| 20 mm | 157 | 314.0 kg |
| 25 mm | 196.2 | 392.5 kg |
kg per m².
Thickness and weight
2 × 1 m plate. Slide the thickness.
The plate is drawn with its edge.
How to weigh a plate
Size to weight. Step through it.
Size
Length and width.
Plan the lift before the plate arrives.
Steel, stainless or aluminium
Plate metals. Compare them.
Strong.
Corrosion proof.
Light.
Aluminium is a third of the weight of steel.
Before you order
Plate checks. Tick each item.
Tick each item as you go.
Check the delivery vehicle can unload heavy plates.
What you get
Plate sizing. Each tile explains one result.
kg and lb.
m².
Weight.
Plates.
Advice.
Steel plate gets heavy fast, 10 mm is about 79 kg per m².
Frequently Asked Questions
No question matches that search.
How do you work out plate weight?
Multiply length, width and thickness by the metal's density.
How much does a steel plate weigh per square metre?
About seven point eight five kilograms for each millimetre of thickness.
Is aluminium plate lighter than steel?
Yes, about a third of the weight.
What is the density of stainless steel?
About eight thousand kilograms per cubic metre.
How heavy is a sheet of ten millimetre steel?
About one hundred and fifty seven kilograms for two by one metres.
Does this work for floor plate?
Add about ten percent for the raised pattern.
Know the weight
Weigh the plate before you order and lifting and delivery go smoothly.
More size calculators
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