Rebar Properties
Nominal diameter, area, perimeter and weight for deformed reinforcing bars, per ASTM A615/A615M. Switch between inch-pound and SI designations.
Bar Properties
ASTM A615/A615M-20, Table 1
| Bar Size | Also Known As | Diameter (in) | Area (in²) | Perimeter (in) | Weight (lb/ft) |
|---|---|---|---|---|---|
| #3 | No. 10 | 0.375 | 0.11 | 1.178 | 0.376 |
| #4 | No. 13 | 0.500 | 0.20 | 1.571 | 0.668 |
| #5 | No. 16 | 0.625 | 0.31 | 1.963 | 1.043 |
| #6 | No. 19 | 0.750 | 0.44 | 2.356 | 1.502 |
| #7 | No. 22 | 0.875 | 0.60 | 2.749 | 2.044 |
| #8 | No. 25 | 1.000 | 0.79 | 3.142 | 2.670 |
| #9 | No. 29 | 1.128 | 1.00 | 3.544 | 3.400 |
| #10 | No. 32 | 1.270 | 1.27 | 3.990 | 4.303 |
| #11 | No. 36 | 1.410 | 1.56 | 4.430 | 5.313 |
| #14 | No. 43 | 1.693 | 2.25 | 5.320 | 7.650 |
| #18 | No. 57 | 2.257 | 4.00 | 7.090 | 13.600 |
| #20* | No. 64 | 2.500 | 4.91 | 7.850 | 16.690 |
* Added in ASTM A615-20 and rarely stocked. Confirm availability before specifying it.
• Values are taken verbatim from ASTM A615/A615M-20 Table 1. Inch-pound and SI are two designation systems for the same bars, not a unit conversion; a #8 and a No. 25 are the same bar.
• Nominal dimensions are those of a plain round bar having the same weight per foot (mass per metre) as the deformed bar, so the diameter shown is not a measurement across the deformations.
• The two systems are independent. ASTM notes that combining values from both may result in non-conformance, so do not convert between the columns.
Quantity Takeoff
Total weight for a run of identical bars
#5
0.625 in diameter, 0.31 in², 1.043 lb/ft
Enter a length to get the total weight.