Calculate bronze weight, linear weight, or required length from alloy density, shape dimensions, quantity, and target weight in common units.

Estimate mass for an ideal, constant cross-section. Choose the shape and use actual dimensions. Rounded corners, fillets, tolerances and machining losses are excluded.

Copper Development Association values at 68ยฐF (20ยฐC). Confirm your material; the editable density below controls the estimate.

For an angle, measure the outside dimension of either equal leg.

For a square tube, use wall thickness; for an angle, use the uniform leg thickness.

Number of identical pieces

Optional; blank means one piece. Enter a whole number.

Bronze Weight Formulas

These formulas estimate one piece with an ideal constant cross-section, excluding fillets, rounded corners, tolerances and machining losses. Total weight multiplies one-piece weight by quantity; linear weight is area times density; length is target weight divided by area times density.

Bronze Flat Sheet Weight Formula = L * W * H * d

Bronze Round Bar Weight Formula = pi * D^2/4 * L * d

Bronze Square Hollow Tube Weight Formula = [W^2-(W-2*T)^2] * L * d

Bronze Round Hollow Tube Weight Formula = pi * (R^2-r^2) * L * d

Bronze Square Angle Weight Formula = (2*W*T-T^2) * L * d

Bronze T bar Weight Formula = (W*T1 + (H-T1)*T2) * L * d

Bronze C Channel Weight Formula = (2*W*T1+H*T2)* L * d

Variables used in these equations: 

  • L is the length
  • W is the width
  • H is the overall height for a T bar, clear height between flanges for a C channel, or sheet thickness for a flat sheet
  • d is the density
  • D is the outer diameter
  • T is the thickness
  • R is the outer radius
  • r is the inner radius
  • T1 is the flange thickness of the T bar or C channel
  • T2 is the web thickness of the T bar or C channel

Select a unit beside each dimension or density value. The calculator converts mixed units automatically; changing an input unit converts its entered quantity. Results can use pounds or kilograms, and length can use common metric or US units.

What is the density of Bronze?

Bronze density depends on the alloy. Copper Development Association reference values at 68ยฐF (20ยฐC) are 0.322 lb/inยณ for C93200, 0.269 lb/inยณ for C95400, and 0.320 lb/inยณ for C51000. Verify the density of your supplied material; no single value is a universal bronze average.