Materials calculator

Sheet & Plate Weight Calculator

Calculate sheet, plate, flat bar, blank, and circular-disc weight from dimensions, quantity, and material density in US or metric units.

Calculate sheet or plate weight

Choose your plate shape, then enter dimensions and quantity.

Set all
Sheet

Results

Total weight

19.63 lb

For the entered quantity and dimensions

Material density
0.284 lb/in³
Total surface area
16.06 ft²
Total volume
69.12 in³

3D view · actual proportions

L
48 in
W
24 in
t
0.06 in

Engineering material reference

Material densities for sheet and plate

Compare materials currently offered by Fabworks or browse 186 standard engineering reference densities across metals, plastics, composites, ceramics, rubber, glass, and wood.

8 materials
Material Family Common names kg/m³ lb/in³
Aluminum 5052-H32Metal—2,6800.097
Aluminum 6061-T6Metal—2,7200.098
Aluminum 7075-T6Metal—2,8100.102
Steel 1008 cold-rolledMetal—7,8500.284
Steel A36 HRPOMetal—7,8610.284
Galvanized steel G90Metal—7,8500.284
Stainless steel 304-2BMetal—8,0300.290
Stainless steel 316Metal—7,9900.289

Quick answer

How this sheet & plate weight calculator works

Sheet and plate weight equals flat area multiplied by thickness, quantity, and material density. Enter a rectangle or circular disc, then choose a Fabworks alloy, another engineering material, or a custom density.

How to use the calculator

  1. 1Under Sheet, choose Rectangular for sheet and plate or Round for a disc or round blank.
  2. 2Enter length and width or diameter, along with thickness and quantity, using individual inch or millimeter controls.
  3. 3Choose a Fabworks material, search all materials, or enter a custom density.
  4. 4Read total weight first, then review calculated volume and surface area for estimating and handling.

Worked example

A36 steel sheet

Inputs
One 24 × 48 × 0.060 in rectangular sheet at a nominal density of 0.283 lb/in³.
Result
Volume = 69.12 in³ and estimated weight = 19.56 lb.

Length multiplied by width and thickness gives material volume; multiplying that volume by density gives weight.

Common questions

What to know before using the result

Can I calculate a circular plate or disc?
Yes. Under Sheet, choose Round, then enter diameter, thickness, quantity, and material density.
Is sheet gauge the same thickness for every metal?
No. Gauge-to-thickness values vary by material system. Use the actual thickness or the linked material-specific gauge chart.
Why can actual plate weight differ?
Thickness tolerance, alloy density, mill variation, coatings, holes, cutouts, and edge preparation can change finished weight from a nominal rectangular estimate.

Formula

m = A × L × ρ

The selected flat or tube geometry gives volume. Rectangular tube includes rounded outside and concentric inside corners. Mass is volume multiplied by density.

Engineering references

Assumptions and limits

  • Dimension-based estimates assume uniform thickness and nominal dimensions.
  • Rectangular tube uses the entered outside radius and a concentric inside radius equal to outside radius minus wall thickness.
  • Standard pipe, conduit, and copper-tube presets use nominal dimensions and representative material densities.
  • Tube estimates exclude fittings, couplings, coatings, weld seams, and manufacturing tolerances.
  • Surface area includes outer, inner, edge, and open-end faces where applicable.
  • Published density values are representative; verify alloy certificates when tolerances matter.
Educational estimate
Use this result for learning and early design exploration. Verify safety-critical or production decisions with the governing standard, material data, real tooling, and a qualified engineer.

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