Bag Size Updated


#3 Rebar — Size, Weight, Use-Cases and More

Discover the use-cases, diameter, weight and more for this size of rebar.

Rebar Calculator

Calculate how much rebar you need. Choose your unit type & add as much rebar as needed.

Rebar Calculator

Calculate how much rebar you need. Choose your unit type & add as much rebar as needed.

Table of Contents

What is 3 rebar used for?

#3 rebar is commonly used in concrete construction for various purposes where moderate reinforcement is required. Some typical uses include:

  1. Concrete Slabs: Used as reinforcement in concrete slabs for residential and light commercial applications such as driveways, sidewalks, and patios.
  2. Footings: Employed in footings to provide structural support and stability for buildings, retaining walls, and other structures.
  3. Garden and Landscape Projects: Utilized in garden beds, retaining walls, and other landscape features to enhance strength and durability.
  4. Paving: Used in reinforced concrete paving projects, such as small roads, pathways, and pavements.
  5. Decorative Concrete: Incorporated into decorative concrete elements such as stamped concrete, where reinforcement is necessary to prevent cracking and ensure longevity.

Overall, #3 rebar is suitable for light to moderate load-bearing applications where additional strength and stability are required in concrete structures.

Size & Diameter

What size is 3 rebar?

Rebar, short for reinforcing bar, is used in concrete construction to enhance the tensile strength of the concrete. The size of rebar is commonly designated by a number, which corresponds to its nominal diameter in eighths of an inch in the United States.

A #3 rebar (rebar size 3) has the following specifications:

  • Diameter: 3/8 inch (or 0.375 inches)
  • Metric Equivalent Diameter: 9.525 mm

The number "3" in #3 rebar means it is 3/8 inch in diameter (3 divided by 8 equals 0.375). This sizing convention helps in identifying the rebar size quickly based on its number designation.

Weight Per Foot

3 rebar weight per foot

To determine the weight of #3 rebar per foot, you can refer to standard industry weights for rebar sizes:

  • Diameter: 3/8 inch (0.375 inches)
  • Weight: 0.376 pounds per foot, or 0.561 kilograms per meter

This means that if you have a length of #3 rebar, you can calculate its weight by multiplying the length in feet by 0.376 pounds per foot.

An Example

For a 10-foot length of #3 rebar:

Weight = 10 feet × 0.376 pounds per foot = 3.76 pounds

This weight calculation is helpful for estimating the total weight of rebar needed for a project or for making sure you’re compliant with structural design specifications.

Ton Count

How many 3 rebar are in a ton?

In short: you would get approximately 266 pieces of 20-foot #3 rebar in a ton.

To determine how many you get in a ton, you need to know the weight of one. Here is a step-by-step process to make this calculation:

  1. Determine the Weight: #3 rebar has a diameter of 3.8 inch (0.375 inches). The weight per linear foot is typically 0.376 pounds.
  2. Calculate the Number of Linear Feet in a Ton: 2000 pounds / 0.376 pounds per foot ≈ 5,319.15 feet
  3. Determine the Length of Each Rebar: If you need the number of individual rebar pieces, you need to know the length of each piece.

For example, if each rebar is 20 feet long:

  1. Calculate the Number of Rebar Pieces in a Ton: Linear Feet per Ton / Length of Each Rebar (in feet)

For a 20-foot rebar:

5,319.15 feet / 20 feet ≈ 265.96 rebars

So, in a ton of #3 rebar, you would get approximately 266 pieces at 20 feet each.

More Rebar Sizes

Weight Per Foot
3/8 inch (or 0.375 inches)
0.376 lbs.
1/2 inch (or 0.5 inches)
0.668 lbs.
5/8 inch (or 0.625 inches)
1.043 lbs.
3/4 inch (or 0.75 inches)
1.502 lbs.
7/8 inch (or 0.875 inches)
2.044 lbs.
1 inch
2.670 lbs.
9/8 inch (or 1.128 inches)
3.400 lbs.
10/8 inch (or 1.27 inches)
4.303 lbs.
11/8 inch (or 1.41 inches)
5.313 lbs.
14/8 inch (or 1.693 inches)
7.650 lbs.
18/8 inch (or 2.257 inches)
13.60 lbs.
    • Dimensions
      A diagram of slab and footing measurements
      • Length
      • Width
      • Edge Clearance
      • Rebar Spacing
      • Rebar Length
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.