Marine aluminium calculators and tools
Eighteen free calculators and reference tables for marine aluminium — plate and sheet weight by shape, boat hull plate area, bend allowance, weld filler, container loading, plus density, specification and corrosion checkers. Built around the 5xxx grades we supply: 5083, 5086, 5754, 5052 and 5059.
If you are pricing a job, start with weight by shape — that is what most buyers need first. If you are sizing a boat, start with hull plate area and let it feed the weight tools. Everything else is here to answer the questions that come up before an order is placed: how it bends, how it welds, how it fits a container, and whether the alloy you picked is the right one.
All weights use the grade you select; nothing is hard-coded to a single alloy.
Weight by shape — pick the form you buy
Design & build — before you place the order
Reference tables & checkers
| Step | What you do | Which tool |
|---|---|---|
| 1. Fix the alloy | Decide 5083 / 5086 / 5754 / 5052 / 5059 from the service condition | Alloy density table |
| 2. Size the part | Bring drawings or a hull outline; decide thickness | Hull plate area |
| 3. Get the weight | Weight per piece, per metre and per tonne | Weight by shape |
| 4. Check the fit | Will it bend, weld and fit the container as ordered | Bend / weld / loading |
| 5. Order | Send the list; we confirm stock, cut length and a firm price | — |
People also ask
Are these calculators free to use?
Yes. Every tool on this page is free, needs no sign-up, and runs entirely in your browser. Nothing you type is stored or sent to us.
Which alloy density do the weight calculators use?
Each calculator has a grade selector. The 5xxx marine grades — 5083, 5086 and 5754 — are all 2,680 kg/m³; 5052 is the same; 5059 is 2,700 and 6061 is 2,700. The full list is on the density table.
Are the numbers accurate enough for a real order?
They are the same formulas we use internally, and every one has been checked against independent calculations. Treat the output as a planning figure: buy plate in full sheets, allow for cutting loss, and expect the mill certificate weight to differ by 1–3%.
Do you supply the plate these tools calculate?
Yes. We supply 5083, 5086, 5754, 5052 and 5059 plate in H116 and H321, from 1.5 mm sheet up to 50 mm plate, with EN 10204 3.1 mill test certificates. Our partner mills hold DNV certification.
Can I get the results in a quote?
Send the sizes and quantities through the enquiry box or by e-mail and we reply within one working day with stock availability and a firm price.
Need plate to match these numbers?
Reply in one working day with stock availability and a firm price.
