Calculator
Steel weight
Theoretical weight at 7.85 g/cm³. Works both ways: metres to tonnes and tonnes to metres.
Product type
—kg per metre
—total, t
—metres per tonne
Formula
Theoretical weight at steel density 7.85 g/cm³. Actual batch weight is by scale and mill certificate.
Theoretical mass is for sizing the batch. Actual mass is by weighing and the mill certificate at acceptance
How mass is calculated
All formulas derive from a steel density of 7.85 g/cm³; the coefficients follow from it rather than from handbook rounding. Catalogue item tables are calculated with the same functions.
| Product | Formula | Unit | Notation |
|---|---|---|---|
| Rebar | Formula0.006165 · d² | Unitkg/m | Notationd — diameter, mm |
| Round bar | Formula0.006165 · d² | Unitkg/m | Notationd — diameter, mm |
| Wire | Formula0.006165 · d² | Unitkg/m | Notationd — diameter, mm |
| Square bar | Formula0.00785 · a² | Unitkg/m | Notationa — side, mm |
| Hexagonal bar | Formula0.006798 · s² | Unitkg/m | Notations — across flats, mm |
| Flat bar | Formula0.00785 · b · t | Unitkg/m | Notationb — width, t — thickness, mm |
| Plate / sheet | Formula7.85 · t | Unitkg/m² | Notationt — thickness, mm |
| Round pipe | Formula0.02466 · (D − t) · t | Unitkg/m | NotationD — outside diameter, t — wall, mm |
| Hollow section | Formula0.0157 · t · (a + b − 2.86 · t) | Unitkg/m | Notationa, b — sides, t — wall, mm |
Price request
Send your specification and we will quote your batch
Price depends on grade, size, tonnage and delivery terms on the day of contract.
Request received