Wire Diameter Reference Chart
0.5mm (0.020″) to #7 Rebar · Sorted by actual size ascending
Decimal (in)
Metric (mm)
Fractional (in)
Steel Gauge
Rebar
WWF (ASTM A1064)
ℹ Rebar = outside rib diameter per ASTM A615 (not nominal) · WWF = W/D designation per ASTM A1064; diameter is identical for W and D of the same number
Filter:
Decimal (in)SizeType
0.0197″
0.5 mm
Metric
0.0204″
25 ga.
Steel Gauge
0.0230″
24 ga.
Steel Gauge
0.0236″
0.6 mm
Metric
0.0258″
23 ga.
Steel Gauge
0.0276″
0.7 mm
Metric
0.0286″
22 ga.
Steel Gauge
0.0315″
0.8 mm
Metric
0.0320″
21 ga.
Steel Gauge
0.0350″
20 ga.
Steel Gauge
0.0354″
0.9 mm
Metric
0.0394″
1.0 mm
Metric
0.0410″
19 ga.
Steel Gauge
0.0469″
3/64″
Fractional
0.0470″
18 ga.
Steel Gauge
0.0492″
1.25 mm
Metric
0.0540″
17 ga.
Steel Gauge
0.0591″
1.5 mm
Metric
0.0625″
1/16″
Fractional
0.0630″
16 ga.
Steel Gauge
0.0720″
15 ga.
Steel Gauge
0.0781″
5/64″
Fractional
0.0787″
2.0 mm
Metric
0.0800″
14 ga.
Steel Gauge
0.0920″
13 ga.
Steel Gauge
0.0938″
3/32″
Fractional
0.0960″
0.096″
Decimal
0.0984″
2.5 mm
Metric
0.1050″
12 ga.
Steel Gauge
0.1094″
7/64″
Fractional
0.1150″
0.115″
Decimal
0.1181″
3.0 mm
Metric
0.1200″
11 ga.
Steel Gauge
0.1240″
3.15 mm
Metric
0.1250″
1/8″
Fractional
0.1350″
10 ga.
Steel Gauge
0.1378″
3.5 mm
Metric
0.1406″
9/64″
Fractional
0.1440″
0.144″
Decimal
0.1480″
9 ga.
Steel Gauge
0.1562″
5/32″
Fractional
0.1575″
4.0 mm
Metric
0.1600″
0.160″
Decimal
0.1620″
8 ga.
Steel Gauge
0.1670″
0.167″
Decimal
0.1719″
11/64″
Fractional
0.1770″
7 ga.
Steel Gauge
0.1772″
4.5 mm
Metric
0.1875″
3/16″
Fractional
0.1900″
0.190″
Decimal
0.1920″
6 ga.
Steel Gauge
Decimal (in)SizeType
0.1969″
5.0 mm
Metric
0.2031″
13/64″
Fractional
0.2070″
5 ga.
Steel Gauge
0.2120″
0.212″
Decimal
0.2165″
5.5 mm
Metric
0.2180″
0.218″
Decimal
0.2188″
7/32″
Fractional
0.2205″
5.6 mm
Metric
0.2250″
4 ga.
Steel Gauge
0.2280″
0.228″
Decimal
0.2320″
0.232″
Decimal
0.2344″
15/64″
Fractional
0.2362″
6.0 mm
Metric
0.2430″
0.243″
Decimal
0.2437″
3 ga.
Steel Gauge
0.2480″
6.3 mm
Metric
0.2500″
1/4″
Fractional
0.2559″
6.5 mm
Metric
0.2625″
2 ga.
Steel Gauge
0.2650″
0.265″
Decimal
0.2656″
17/64″
Fractional
0.2720″
0.272″
Decimal
0.2756″
7.0 mm
Metric
0.2812″
9/32″
Fractional
0.2830″
1 ga.
Steel Gauge
0.2953″
7.5 mm
Metric
0.2969″
19/64″
Fractional
0.3065″
1/0 ga.
Steel Gauge
0.3120″
0.312″
Decimal
0.3125″
5/16″
Fractional
0.3150″
8.0 mm
Metric
0.3281″
21/64″
Fractional
0.3310″
2/0 ga.
Steel Gauge
0.3346″
8.5 mm
Metric
0.3438″
11/32″
Fractional
0.3450″
0.345″
Decimal
0.3543″
9.0 mm
Metric
0.3594″
23/64″
Fractional
0.3620″
3/0 ga.
Steel Gauge
0.3740″
9.5 mm
Metric
0.3750″
3/8″
Fractional
0.3860″
0.386″
Decimal
0.3906″
25/64″
Fractional
0.3937″
10.0 mm
Metric
0.3938″
4/0 ga.
Steel Gauge
0.4010″
0.401″
Decimal
0.4050″
#3
Rebar
0.4062″
13/32″
Fractional
Decimal (in)SizeType
0.4134″
10.5 mm
Metric
0.4219″
27/64″
Fractional
0.4300″
5/0 ga.
Steel Gauge
0.4331″
11.0 mm
Metric
0.4370″
0.437″
Decimal
0.4375″
7/16″
Fractional
0.4410″
0.441″
Decimal
0.4450″
0.445″
Decimal
0.4531″
29/64″
Fractional
0.4615″
6/0 ga.
Steel Gauge
0.4640″
0.464″
Decimal
0.4688″
15/32″
Fractional
0.4724″
12.0 mm
Metric
0.4844″
31/64″
Fractional
0.4900″
7/0 ga.
Steel Gauge
0.5000″
1/2″
Fractional
0.5000″
12.7 mm
Metric
0.5118″
13.0 mm
Metric
0.5156″
33/64″
Fractional
0.5312″
17/32″
Fractional
0.5400″
#4
Rebar
0.5469″
35/64″
Fractional
0.5512″
14.0 mm
Metric
0.5625″
9/16″
Fractional
0.5781″
37/64″
Fractional
0.5906″
15.0 mm
Metric
0.5938″
19/32″
Fractional
0.6094″
39/64″
Fractional
0.6250″
5/8″
Fractional
0.6299″
16.0 mm
Metric
0.6406″
41/64″
Fractional
0.6562″
21/32″
Fractional
0.6693″
17.0 mm
Metric
0.6719″
43/64″
Fractional
0.6810″
#5
Rebar
0.6875″
11/16″
Fractional
0.7031″
45/64″
Fractional
0.7087″
18.0 mm
Metric
0.7188″
23/32″
Fractional
0.7344″
47/64″
Fractional
0.7480″
19.0 mm
Metric
0.7500″
3/4″
Fractional
0.7656″
49/64″
Fractional
0.7812″
25/32″
Fractional
0.7874″
20.0 mm
Metric
0.8260″
#6
Rebar
0.9630″
#7
Rebar