Sheet Metal Engineering Tools & Reference Tables
Three tools we use on real quotations: a gauge conversion chart, a bend allowance calculator and a sheet weight calculator. No sign-up, no upload — the maths runs in your browser.
Sheet metal gauge chart
Gauge to millimetres and inches for steel, galvanized, stainless and aluminium, with weight per square metre and per 4×8 sheet.
Open the chartBend allowance calculator
Bend allowance, bend deduction, outside setback and flat length from thickness, inside radius, angle and K-factor.
Open the calculatorWeight calculator
Weight per piece and per order for sheet and plate, in metric and imperial, across four material families.
Open the calculatorEnclosure IP rating selector
Answer four questions about environment, water, dust and access to get the right IP rating (IP54 / IP65 / IP66) for an electrical enclosure.
Open the selectorMaterial weight & cost compare
Compare carbon steel, stainless steel and aluminium for a panel: exact weight from density and a relative cost index per material for quick quoting.
Open the toolThe same three numbers, on the shop floor
These are not marketing tools bolted onto the site. Thickness, flat length and weight are the three figures that move through our own quotation and production process:
- At DFM review — the gauge call-out is checked against the material, and a bend radius that will crack is flagged before nesting.
- At nesting — the flat pattern comes from your model; the calculator is how we sanity-check a flat length that looks wrong.
- At quotation — material consumption is priced from the flat pattern, not from the finished footprint.
- At packing — crate weight and dimensions go on the packing list so the forwarder quotes against real numbers.
If a drawing arrives with a gauge instead of a thickness, we convert it here and confirm the material standard with you before cutting.
What we fabricate from that sheet
The material in these tables becomes enclosures, cabinets, chassis and brackets — laser cut, formed, welded and finished in one plant.
About these tools
Yes, and they run entirely in your browser. There is no sign-up, no email gate and no upload — nothing you type leaves the page.
For estimating, yes. For a purchase order, treat them as a check rather than a source of truth: the flat pattern belongs to your CAD model and the weight belongs to the mill certificate. Where the two disagree, the drawing wins.
Because most slow quotations start with a buyer and a supplier using different assumptions about thickness, flat length or weight. Putting the formulas in public removes that argument before it starts.
Have a drawing that needs a second opinion?
Send it over. We will check thickness, bend radii, hole-to-bend distances and weld access, then quote the part as drawn or with the changes we recommend.