Metal Weight Calculator

Inputs

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Cross-section profile of the stock.
Density comes from our cited material-density table.
Outside diameter of the round bar.
mm
Length of one piece.
m
Number of identical pieces.
pcs
Extra weight to plan for saw drops, trimming, defects, mill minimums and ordering allowance.
%
Optional user-entered price per kilogram. This is not a live commodity or supplier lookup.
$/kg

Results

Default result
Edit inputs
Total weight(W)
3.853kg

Net calculated weight before overage.

Also computed

Order weight incl. overage(W_buy)3.853kg

No waste / ordering allowance added.

Estimated material cost(Cost)0.00$

Enter a price per kg for a cost estimate.

Weight each(w₁)3.853kg

Weight per length(w/L)3.853kg/m

Independent of length and quantity.

Cross-section area(A)490.9mm²

Volume each(V₁)490.9cm³

Method notes 5 notes
  • Weight = density × cross-section area × length. Mild / low-carbon steel (A36/1018) density = 7.85 g/cm³.
  • Cross-section of a round bar: A = π/4 · d².
  • Order weight = net total weight × (1 + waste / 100). Material cost uses the user-entered $/kg value, not a live commodity price.
  • Weight-per-length is independent of the length you enter.
  • Nominal density — real alloy weight varies slightly with composition and temper.

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