Skip to content
ENExplore Calculators

Steel Plate Weight Calculator

Work out steel plate weight instantly with clear inputs, formula shown and shareable results.

About Steel Plate Weight Calculator

Plate weight is volume times density. Working in millimetres, area in square metres is length times width divided by a million, and multiplying by thickness in metres gives volume. For mild steel at 7850 kg/m³ this reduces to the useful shortcut that each millimetre of thickness weighs 7.85 kg per square metre.

Formulas

Plate weight

kg = length m x width m x thickness m x density

Shortcut

Mild steel: kg/m² = 7.85 x thickness in mm

Worked example

With the default values below, Steel Plate Weight Calculator returns Plate weight of 157.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Plate lengthminimum 1 mm
2,000 mm
Plate widthminimum 1 mm
1,000 mm
Plate thicknessminimum 0.1 mm
10 mm
Material densityminimum 100 kg/m³
7,850 kg/m³

Results

Plate weight
157.00 kg
Plate area
2.000 m²
Weight per square metre
78.50 kg/m²
Weight in tonnes
0.1570 t

Step by step

  1. 1Values used
  2. 2Plate weight
  3. 3Shortcut
  4. 4Plate weight= 157.00 kg
  5. 5Plate area= 2.000 m²
  6. 6Weight per square metre= 78.50 kg/m²
  7. 7Weight in tonnes= 0.1570 t

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Steel Plate Weight figure worked out?

kg = length m x width m x thickness m x density. Plate weight is volume times density.

Do I use nominal or actual thickness?

Actual, if you have it. Hot rolled plate is permitted a minus tolerance, so on large orders the delivered weight can be a percent or two under the nominal calculation.

What values do I need to enter?

This calculator takes 4 inputs: Plate length, Plate width, Plate thickness, Material density. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.

Related Calculators

Steel Plate Weight Calculator | Calcrivo