What is the diameter of #2 AWG wire in inches and millimeters?

According to the Engineering ToolBox chart, #2 AWG wire has a diameter of 0.258 inches (6.54 mm).

What is the cross-sectional area of #2 AWG wire?

The cross-sectional area for #2 AWG wire is 33.6 mm², as listed in the Engineering ToolBox AWG chart.

How does #2 AWG compare to other common wire sizes?

#2 AWG is larger than #12 household wire (0.0641 inches) but smaller than 1/0 AWG (0.325 inches), placing it in the medium-heavy gauge range for service entrance and feeder applications.

Does the Engineering ToolBox chart include ampacity ratings for #2 AWG wire?

The chart lists diameter, area, and resistance data; for ampacity ratings users may need to consult additional resources or the page's load calculator feature, as the standard AWG table focuses on physical dimensions.

ElectricalTool Review

#2 gauge wire

Provided byEngineering ToolBoxengineeringtoolbox.com

This AWG wire gauge chart lists diameters and cross‑sectional areas for each gauge, including 2 AWG. It’s a quick loo...

One of 6 options for #2 gauge wire

Use This Tool

Screenshot of #2 gauge wire on Engineering ToolBox — engineeringtoolbox.comOpen the live tool →

About this tool

What #2 gauge wire does

The Engineering ToolBox AWG Wire Gauge Chart provides a comprehensive reference for #2 gauge wire dimensions and electrical properties. Users can quickly access the diameter in inches and millimeters, cross-sectional area in square millimeters, and related electrical specifications for this common wire size. The chart covers the full AWG range from 4/0 down to 26, allowing comparison of #2 gauge against other sizes within the same table. The page notes that solid and stranded wires of the same AWG may have different actual diameters, offering a practical caveat for real-world applications.

Step by step

How to use the Engineering ToolBox #2 gauge wire

1
Open the Engineering ToolBox AWG Wire Gauge Chart page
2
Locate the row for #2 AWG in the diameter table
3
Read the diameter values in inches and millimeters and the cross-sectional area in square millimeters
4
Use the ampacity or load calculator features if additional current capacity data is needed

Is it right for you

Best for

Engineers, electricians, and DIY enthusiasts who need quick, accurate dimensional and area data for #2 AWG wire without navigating multiple pages or charts.

Limitations

Diameter values differ between solid and stranded conductors of the same gauge
AWG standards are U.S.-centric and may not align with international wire sizing systems
The page contains sponsored links and commercial content that may distract from the technical data

Questions

#2 gauge wire FAQ

What is the diameter of #2 AWG wire in inches and millimeters?: According to the Engineering ToolBox chart, #2 AWG wire has a diameter of 0.258 inches (6.54 mm).
What is the cross-sectional area of #2 AWG wire?: The cross-sectional area for #2 AWG wire is 33.6 mm², as listed in the Engineering ToolBox AWG chart.
How does #2 AWG compare to other common wire sizes?: #2 AWG is larger than #12 household wire (0.0641 inches) but smaller than 1/0 AWG (0.325 inches), placing it in the medium-heavy gauge range for service entrance and feeder applications.
Does the Engineering ToolBox chart include ampacity ratings for #2 AWG wire?: The chart lists diameter, area, and resistance data; for ampacity ratings users may need to consult additional resources or the page's load calculator feature, as the standard AWG table focuses on physical dimensions.

Other Options

More #2 gauge wire tools

Compare all →