ClarityHow to use this tool
- Enter bar diameter, total bar length, steel density.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
The method, explained
Mass = density × π(diameter/1000)²/4 × total length.
Using bar diameter = 12 mm, total bar length = 100 m, steel density = 7850 kg/m³, the result is 88.7814084 kg. Change these example inputs to match your task; use the method above to check each step.
Understanding your result
Solid circular nominal section. Actual product mass and rib geometry can differ; use supplier tables for purchasing precision.
What to keep in mind
Solid circular nominal section. Actual product mass and rib geometry can differ; use supplier tables for purchasing precision. A material-quantity estimate, not a structural design or building-code check. Confirm site measurements, supplier coverage and waste before ordering.
Common questions
How do I use this rebar weight calculator?
Estimate steel reinforcement mass from nominal diameter and total length. Enter bar diameter in mm, total bar length in m, steel density in kg/m³. The starting example is editable; use values for the same system or project.
Which assumptions affect this result?
Solid circular nominal section. Actual product mass and rib geometry can differ; use supplier tables for purchasing precision.
Methodology maintained by ClarityKit. How these tools are built and checked.