Steel Rebar Calculator
Convert reinforcement bar diameter, length and quantity into total weight and the number of standard 12 m bars.
Your measurements
Estimate
- Total weight
- 570 kg
- Weight in tonnes
- 0.57 t
- Weight per metre
- 0.888 kg/m
- Standard 12 m bars
- 54 bars
Uses the d²/162.2 rule for kg per metre. Confirm against the mill certificate.
Common questions
What is the weight formula for rebar?
Weight per metre in kilograms is the diameter in millimetres squared, divided by 162.2. A 12 mm bar therefore weighs about 0.888 kg per metre.