About and methodology

Steel Weight Calculator gives the weight of steel shapes and rolled sections from published standard dimensions. Every number on the site is calculated or taken from the sources below, and checked by automated tests before each release.

Data sources

• American shapes (W, S, M, HP, C, MC, L, HSS, Pipe): AISC Shapes Database v16.0 (August 2023).
• Indian sections (ISMB, ISWB, ISMC, ISA): IS 808:2021, with the earlier values of IS 808:1989 (Amendment No. 1, 1992) and the 1964 ISI Handbook SP 6(1), as made public by Public.Resource.Org (IS 808:2021, IS 808:1989, SP 6(1)).
• European sections (IPE, HEA, HEB, HEM, UPN): dimensions from the open-source structuralcodes library (Apache-2.0), cross-checked against FreeCAD's profile library (LGPL-2.1). Masses and properties are calculated from those dimensions.
• Pipe schedules, rebar sizes and sheet metal gauges: adapted from the Wikipedia articles Nominal Pipe Size, Rebar and Sheet metal, licensed under CC BY-SA 4.0. The adapted tables on this site are available under the same license.

Download the data

The Indian, European, pipe, rebar and sheet gauge tables are available as CSV and JSON in the open repository steel-section-weights on GitHub, for spreadsheets, BOQ sheets and estimating scripts. AISC shapes are not included there; download them from AISC.

How values are checked

• Every AISC W and HP shape: area rebuilt from depth, flange, web and fillet dimensions, and weight compared with the nominal weight in the designation.
• European sections: dimensions from two independent open sources must agree; computed masses and second moments of area are compared with published tables.
• Every row of the Indian tables: mass must equal 0.785 × area, each radius of gyration must equal √(I / A), and the elastic modulus must equal I / (D / 2). This found misprints in the standards themselves, which are shown on the affected pages with the corrected value.
• Pipe STD, XS and XXS walls are compared with the AISC pipe shapes; rebar masses with area × 7850 kg/m³.

Assumptions

• Density of carbon steel: 7850 kg/m³ (490 lb/ft³). Other materials are listed on the calculator.
• Weights are theoretical. Rolled products are made within mass tolerances (ASTM A6, EN 10034, IS 1852 and others), and suppliers may invoice by actual weight.
• This site is for estimating. It is not a substitute for the producer's data or for design by a qualified engineer.

Not affiliated with AISC, the Bureau of Indian Standards, CEN, Public.Resource.Org or any steel producer.