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Number 4 Rebar

Made from a sturdy composite of carbon steel, Number 4 rebar is a commonly used high-grade reinforcement product with widespread applications in the residential and light commercial construction industries. In particular, Number 4 reinforcement steel is used to pave roads and highways, and in certain climates, it can also be used to build swimming pool frames. Often trusted as a strengthening material in slabs, piers, columns and walls, Number 4 rebar is known as “13MM” in the metric system.

The physical characteristics of Number 4 rebar are as follows:
  • Weight per unit length: 0.668 pounds per foot (0.996 kilograms per meter)
  • Nominal diameter: 0.5 inches (12.7 millimeters)
  • Nominal area: 0.2 square inches (129 square millimeters)
  • Rebar sizes chart

    Imperial Bar Size

    "Soft" Metric Size

    Weight per unit length (lb/ft)

    Mass per unit length (kg/m)

    Nominal Diameter (in)

    Nominal Diameter (mm)

    Nominal Area(in2)

    Nominal Area (mm2)









    At 1st Resource Solutions, we continually strive to ensure that our product offerings reflect the latest technological developments and construction industry trends. Our focus is on providing our valued customer base with the reliable, strong and high-quality industrial reinforcement products they need to deliver on their construction quality promises.

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