Wire mesh reference tool

Wire Mesh Size Table: Openings, Gauge, Micron & Weight

Compare practical reference sizes before you issue an RFQ. Choose the manufacturing process first, then match opening, wire diameter, material and supply form to the job.

Pick a manufacturing process to avoid mixing woven mesh count, welded opening, perforated pattern and expanded-metal dimensions.

View Size Table

WovenWoven Wire Mesh WeldedWelded Wire Mesh PerforatedPerforated Metal ExpandedExpanded Metal

Reference size charts

Find the right wire mesh specification

Values are nominal references for early selection and quotation. Confirm material grade, finished dimensions, tolerance, coating and test requirements before production.

Woven Welded Perforated Expanded

Woven Wire Mesh

For filtration, sieving and screen packs. Mesh count means openings per linear inch, not the clear opening by itself.

5 reference sizes

Nominal wire mesh size reference. Final purchase specifications must be agreed in the quotation.
Mesh count	Wire diameter	Aperture	Micron	Open area	Reference weight
4 mesh	1.20 mm	5.15 mm	5,150 µm	65.8%	4.1 kg/m²
20 mesh	0.41 mm	0.86 mm	860 µm	45.8%	2.0 kg/m²
60 mesh	0.19 mm	0.233 mm	233 µm	30.3%	1.1 kg/m²
100 mesh	0.11 mm	0.144 mm	144 µm	32.1%	0.62 kg/m²
200 mesh	0.053 mm	0.074 mm	74 µm	33.9%	0.30 kg/m²

4 mesh1.20 mm

Wire diameter: 1.20 mm
Aperture: 5.15 mm
Micron: 5,150 µm
Open area: 65.8%
Reference weight: 4.1 kg/m²

20 mesh0.41 mm

Wire diameter: 0.41 mm
Aperture: 0.86 mm
Micron: 860 µm
Open area: 45.8%
Reference weight: 2.0 kg/m²

60 mesh0.19 mm

Wire diameter: 0.19 mm
Aperture: 0.233 mm
Micron: 233 µm
Open area: 30.3%
Reference weight: 1.1 kg/m²

100 mesh0.11 mm

Wire diameter: 0.11 mm
Aperture: 0.144 mm
Micron: 144 µm
Open area: 32.1%
Reference weight: 0.62 kg/m²

200 mesh0.053 mm

Wire diameter: 0.053 mm
Aperture: 0.074 mm
Micron: 74 µm
Open area: 33.9%
Reference weight: 0.30 kg/m²

Welded Wire Mesh

For fencing, guarding, storage and fabricated panels. State the clear opening and finished wire diameter, not gauge alone.

4 reference sizes

Nominal wire mesh size reference. Final purchase specifications must be agreed in the quotation.
Clear opening	Wire diameter	Gauge reference	Supply form	Reference weight	Material / finish
150 × 150 mm	4.0 mm	8 ga	2.4 × 6.0 m sheet	2.2 kg/m²	Plain / galvanized steel
50 × 50 mm	2.0 mm	14 ga	1.0 × 30 m roll	1.6 kg/m²	Galvanized steel
25 × 25 mm	1.2 mm	18 ga	1.0 × 30 m roll	1.1 kg/m²	Galvanized / 304 stainless
12.7 × 12.7 mm	0.80 mm	21 ga	1.0 × 30 m roll	0.62 kg/m²	GAW / PVC / 304 / 316

150 × 150 mm4.0 mm

Wire diameter: 4.0 mm
Gauge reference: 8 ga
Supply form: 2.4 × 6.0 m sheet
Reference weight: 2.2 kg/m²
Material / finish: Plain / galvanized steel

50 × 50 mm2.0 mm

Wire diameter: 2.0 mm
Gauge reference: 14 ga
Supply form: 1.0 × 30 m roll
Reference weight: 1.6 kg/m²
Material / finish: Galvanized steel

25 × 25 mm1.2 mm

Wire diameter: 1.2 mm
Gauge reference: 18 ga
Supply form: 1.0 × 30 m roll
Reference weight: 1.1 kg/m²
Material / finish: Galvanized / 304 stainless

12.7 × 12.7 mm0.80 mm

Wire diameter: 0.80 mm
Gauge reference: 21 ga
Supply form: 1.0 × 30 m roll
Reference weight: 0.62 kg/m²
Material / finish: GAW / PVC / 304 / 316

Perforated Metal

For ventilation, acoustic panels and guards. Hole diameter, pattern, pitch and sheet thickness must be specified together.

3 reference sizes

Nominal wire mesh size reference. Final purchase specifications must be agreed in the quotation.
Hole size	Pitch	Sheet thickness	Open area	Sheet size	Material
3.0 mm round	5.0 mm staggered	1.0 mm	32.6%	1.0 × 2.0 m	Galvanized / 304 stainless
6.0 mm round	9.0 mm staggered	1.5 mm	40.3%	1.0 × 2.0 m	Carbon steel / aluminum
10.0 mm round	15.0 mm staggered	2.0 mm	40.3%	1.0 × 2.0 m	Carbon / galvanized steel

3.0 mm round5.0 mm staggered

Pitch: 5.0 mm staggered
Sheet thickness: 1.0 mm
Open area: 32.6%
Sheet size: 1.0 × 2.0 m
Material: Galvanized / 304 stainless

6.0 mm round9.0 mm staggered

Pitch: 9.0 mm staggered
Sheet thickness: 1.5 mm
Open area: 40.3%
Sheet size: 1.0 × 2.0 m
Material: Carbon steel / aluminum

10.0 mm round15.0 mm staggered

Pitch: 15.0 mm staggered
Sheet thickness: 2.0 mm
Open area: 40.3%
Sheet size: 1.0 × 2.0 m
Material: Carbon / galvanized steel

Expanded Metal

For walkways, platforms and guards. Specify SWD, LWD, strand dimensions and whether the sheet is raised or flattened.

3 reference sizes

Nominal wire mesh size reference. Final purchase specifications must be agreed in the quotation.
SWD	LWD	Strand / thickness	Open area	Sheet size	Material / form
12 mm	30 mm	2.0 / 1.5 mm	45%	1.22 × 2.44 m	Carbon steel, raised
25 mm	62 mm	3.0 / 2.0 mm	58%	1.22 × 2.44 m	Galvanized steel, raised
42 mm	102 mm	4.0 / 3.0 mm	63%	1.22 × 2.44 m	Carbon steel, flattened

12 mm30 mm

LWD: 30 mm
Strand / thickness: 2.0 / 1.5 mm
Open area: 45%
Sheet size: 1.22 × 2.44 m
Material / form: Carbon steel, raised

25 mm62 mm

LWD: 62 mm
Strand / thickness: 3.0 / 2.0 mm
Open area: 58%
Sheet size: 1.22 × 2.44 m
Material / form: Galvanized steel, raised

42 mm102 mm

LWD: 102 mm
Strand / thickness: 4.0 / 3.0 mm
Open area: 63%
Sheet size: 1.22 × 2.44 m
Material / form: Carbon steel, flattened

How to read wire mesh sizes

Choose the measurement that controls your application

A mesh number, opening and wire diameter describe different things. The right starting point depends on whether the job is separation, containment, airflow or load-bearing access.

For plain woven mesh: aperture (mm) ≈ 25.4 ÷ mesh count − wire diameter (mm).

Use the wire mesh calculator

Mesh count

The number of openings per linear inch in woven wire cloth. Higher mesh count usually means a smaller opening, but wire diameter still changes the clear aperture.

Aperture / clear opening

The open distance between inside wire faces. This is the primary dimension for particle retention, pests and airflow.

Wire diameter / gauge

The wire thickness controls strength, weight and open area. Buy by millimetres; gauge is only a reference because charts differ.

SWD and LWD

Expanded metal uses short-way and long-way diamond dimensions, plus strand width and thickness. It is not specified by woven mesh count.

Application starting points

Start from the job, then choose the measurement.

Filtration & sieving

Start with woven mesh and aperture in microns

Use mesh count, aperture and open area together; provide media, flow and particle-size requirements in the RFQ.

Fencing & enclosures

Start with welded clear opening and wire diameter

State the animal or security risk, environment, finish, roll or panel dimensions and support method.

Concrete reinforcement

Start with welded spacing, wire and sheet size

Confirm drawing, grade, spacing, sheet dimensions and applicable project standards before final selection.

Guards & airflow

Choose perforated or expanded metal by load and open area

Specify impact risk, edge treatment, panel support, material and corrosion route alongside the opening pattern.

Detailed specification guides

Need a specification for one exact opening?

These pages add material routes, supply forms, weights, application checks and RFQ guidance. Only pages with their own technical content are listed here.