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Steel Weight Calculator

Rebar weight from diameter, length and bar count.

Enter details

How to use

  1. Fill in: Bar diameter (mm), Length per bar (m) and Number of bars. Fields with defaults or marked optional can stay as shown.
  2. Tap Calculate Weight.
  3. Read the result - you can print or save it as PDF.

Worked example

With Length per bar = 12, Number of bars = 1:

TOTAL STEEL WEIGHT10.7 kg
  • Weight per metre: 0.888 kg/m
  • Per bar (12 m): 10.7 kg
  • Number of bars: 1
Formula: weight (kg/m) = diameter² / 162.2, the standard thumb rule for round steel bars.