Aluminum Weight Calculator

Compute weights for sheets, bars, tubes, angles, channels, and beams instantly online. Toggle metric or imperial units, customize density, and include waste allowance easily. Export detailed results and examples as CSV or PDF files for sharing. Built for engineers, fabricators, students, and estimators everywhere.

Input
White theme
Results
# Shape Dimensions Qty Density (kg/m³) Volume (m³) Weight / piece (kg) Total (kg) Total (lb) Notes
Grand Total: 0 0
Tip: Add multiple rows for different shapes or sizes, then export.
Example Data
Shape Unit system Key dimensions Length Qty
Sheet / PlateMetricW=1000 mm, T=6 mm2 m3
Round RodImperialD=1.5 in8 ft4
Round TubeImperialOD=2.5 in, t=0.125 in10 ft6
Rectangular TubeMetricW=50 mm, H=30 mm, t=3 mm3.6 m12
Angle (L)MetricLegs=40/40 mm, t=5 mm6 m10
I‑BeamImperialH=6 in, bf=4 in, tf=0.3 in, tw=0.25 in20 ft2
Formulas Used
  • Weight = Volume × Density × (1 + Waste%)
  • Sheet / Plate: V = L × W × T
  • Round Rod: V = π × (D/2)2 × L
  • Square Bar: V = S2 × L
  • Rectangular Bar: V = W × H × L
  • Round Tube: V = π × (OD/2)2 − π × (ID/2)2 all × L, where ID = OD − 2t
  • Square Tube: V = S2 − (S − 2t)2 all × L
  • Rectangular Tube: V = (W × H − (W − 2t)(H − 2t)) × L
  • Angle (L): V ≈ (A × t + B × t − t × t) × L
  • Channel (C): V ≈ [2 × (bf × tf) + tw × (h − 2tf)] × L
  • I‑Beam: V ≈ [2 × (bf × tf) + tw × (h − 2tf)] × L
  • T‑Bar: V ≈ [bf × tf + tw × (h − tf)] × L
  • Disc: V = π × (D/2)2 × T
  • Wire: V = π × (D/2)2 × L
All dimensions are converted to meters before volume calculation; density in kg/m³; outputs in kg and lb.
How to Use
  1. Select the shape, unit system, and quantity.
  2. Enter dimensions. For hollow shapes, provide wall thickness and outer sizes.
  3. Pick a density preset or enter a custom value.
  4. Optionally add waste allowance and notes, then click Calculate & Add Row.
  5. Repeat for additional items. Export your table via CSV or PDF.
FAQs

Calculations are geometric approximations using your chosen density. Real‑world products may include fillets, tapers, or tolerances that slightly change weight.

Yes. Choose the unit system before entering dimensions to ensure proper conversions. Results are always provided in kilograms and pounds.

Use a preset close to your alloy or enter a custom value from material datasheets. Density varies slightly with alloy and temper.

We subtract the inner void based on wall thickness from the outer geometry. Ensure thickness does not exceed half of any outer side.

Yes. Add a waste percentage to increase calculated weight to cover kerf, offcuts, and contingencies.

You can use any material by entering its density manually. The formulas apply to the listed shapes regardless of metal type.

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