Steel surface area calculator
The paintable area of common steel shapes, per metre and in total. For any other profile, enter the perimeter from the section table.
This tool is a reference aid. Before you act on a result, check it against your specification and the product data sheet.
Formulas
- Pipe, outside surface: π × outside diameter × length.
- Plate: length × width × sides coated (edges not included).
- Rectangular hollow section: 2 × (a + b) × length (outside).
- Any profile: perimeter × length; steel section tables list the painted perimeter or m²/m.
Try it in an exam-style question. FROSIO consumption calculations start from the area, and the exam does not hand out the basic area formulas. The free readiness check shows the question style and explains every answer.
Take the free readiness checkSee the tracksRelated: Paint consumption calculator · m² ↔ ft² converter.