Steel Rebar Weight Calculator
Rebar in Steel: use the calculator for an instant mass estimate.
Steel Rebar: tons to meters
Use “Calculate length (meters per ton)” to solve stock length from total mass while keeping the same section model and grade density.
Rebar (Steel) — weight calculator (dimensions → mass)
Enter all dimensions including length — estimated weight updates instantly.
Weight
11.74
lb
Standards & codes
Reference information
Commonly cited families (verify edition on your certificate):
- GOST 5781
- R 52544
- BS 4449
- ASTM A615/A706
- ISO 6935
Reinforcing bar diameters and mass/m are aligned with GOST 5781, R 52544, BS 4449, ASTM A615 / A706, and ISO 6935 family documents. Bend radii and lap lengths are taken from structural codes (e.g. Eurocode 2, ACI 318), not from weight tables alone.
Weight table
Reference: weight per 1 meter (kg/m)
Illustrative values for common sizes of Rebar at the density you selected. For procurement, always verify against mill certificates.
| Diameter (mm) | kg/m | |
|---|---|---|
| 8 | 0.395 | |
| 10 | 0.617 | |
| 12 | 0.888 | |
| 16 | 1.578 | |
| 20 | 2.466 | |
| 25 | 3.853 |
Figures follow the same geometric model as the calculator above; rounding and simplifications apply.
Method
How to calculate weight
Core model
V = π · (d/2)² · L
m = ρ · VField names
Treat rebar as a solid cylinder: π·(d/2)²·L·ρ. Keywords such as rebar weight per meter and reinforcing bar kg/m map directly to that geometry.
Length is often entered in meters while diameter stays in mm—our calculator normalizes everything before applying your metal density.
FAQ
Estimates, offline use, and the MetalCalc Pro apps