How to calculate steel beam weight
Standard hot-rolled beams and columns have a nominal mass per metre that is published in the section tables and built into the section name. In a designation like 457 × 191 × 67 UB, the first two numbers are the nominal depth and width in mm, and the third number — 67 — is the mass in kg per metre. So:
Total weight = Mass per metre (kg/m) × Length (m) × Quantity
Pick your section in the calculator above and it pulls the catalogue kg/m automatically, then multiplies by your length and quantity. It covers UK UB, UC and PFC sections plus European IPE and HEB ranges.
Common beam weights (kg per metre)
| Section | Mass (kg/m) |
|---|---|
| 203 × 133 × 25 UB | 25.1 |
| 305 × 165 × 40 UB | 40.3 |
| 457 × 191 × 67 UB | 67.1 |
| 203 × 203 × 46 UC | 46.1 |
| 254 × 254 × 73 UC | 73.1 |
| IPE 300 | 42.2 |
| HEB 200 | 61.3 |