Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Sharp-corner L section; rolled fillets, tolerances and coatings excluded.
Example Calculation
- Outside leg A: 50 mm
- Outside leg B: 40 mm
- Thickness: 5 mm
- Length: 2 m
- Density: 7850 kg/m³
Outside leg A = 50 mm; Outside leg B = 40 mm; Thickness = 5 mm; Length = 2 m; Density = 7850 kg/m³. Primary result: 6.6725.
Frequently asked questions
How do I use this calculator?
Enter outside leg a, outside leg b, thickness, length, density. The result updates automatically. Use Reset to restore the example values.
What method does it use?
cross-section=t(A+B−t); mass=area mm²/10⁶ ×length ×density.. Sharp-corner L section; rolled fillets, tolerances and coatings excluded.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.