Aluminium weight unit converter
Convert between kilograms, tonnes, pounds and hundredweight — and turn a weight straight into square metres of plate at a given thickness.
Weight
Section weight
All figures are exact international definitions, so the output is safe to put on a commercial document.
1 t = 1,000 kg1 lb = 0.45359237 kg1 US short ton = 907.18474 kgPlate (kg/m²) = thickness (mm) / 1000 × ρ
| Unit | In kilograms |
|---|---|
| 1 kilogram | 1.000 |
| 1 metric tonne | 1,000 |
| 1 pound | 0.45359 |
| 1 UK hundredweight (112 lb) | 50.802 |
| 1 US short ton (2,000 lb) | 907.185 |
- Ask suppliers to quote in metric tonnes with a stated tolerance; most mills do, but traders sometimes quote short tons.
- For a quick sanity check, 1 m² of 1 mm aluminium plate weighs about 2.7 kg.
- Divide a plate weight by kg/m² to get the area, which is how you work backwards from a weight allowance to a cutting list.
People also ask
Is a tonne the same as a ton?
No. A metric tonne is 1,000 kg. A US short ton is 907 kg and a UK long ton is 1,016 kg. Always confirm which one a quote uses.
How do I get kg/m² for aluminium plate?
Multiply thickness in mm by the alloy density in kg/m³ and divide by 1,000. For 6 mm 5083: 6 × 2,680 / 1,000 = 16.08 kg/m².
What is the density of aluminium in lb/in³?
About 0.096–0.102 lb/in³ depending on alloy, which is roughly one third that of steel.
Why does the same plate weigh differently from different suppliers?
Density differs slightly by alloy (up to 5%), and thickness tolerance has an even bigger effect: a plate 0.3 mm over nominal weighs about 5% more.
Can I use this for stainless or steel?
No — the section-weight note uses aluminium densities. Steel is around 7,850 kg/m³, nearly three times the density of aluminium.
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