Woven wire mesh sizes: mesh count, wire diameter, opening and open area — 2 to 325 mesh (square weave, market and mill grade) — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/woven-wire-mesh-sizes-opening-open-area/ (sheet CC BY 4.0) Basis: Woven Wire Products' market-grade table (39 rows, 2 to 325 mesh), its stainless 14 to 20 mesh sheets and Newark Wire Cloth's mill-grade table (29 rows, 2 to 60 mesh), with the open area recomputed; numbers only Catalog version: 2026-10-20 Sizes: see table below - Mesh count is the number of openings per linear inch, counted from the centre of one wire to the same point 1 inch away. For square plain weave with wire diameter d (in) and count m, the opening is 1/m − d and the open area is (1 − m × d)² (as a fraction). The last two columns apply those two formulas to the printed mesh and wire diameter; they are computed here as a check and match the printed opening and open area to rounding in every row. - A mesh count does not fix the wire: the same count is made with several wire diameters, which changes the opening and open area. Woven Wire Products lists 4 mesh with 0.047 in wire (0.203 in opening, 65.9% open) and with 0.063 in wire (0.187 in, 56.0%); Newark's mill-grade 4 × 4 uses 0.035 in wire (0.215 in, 74.0%). The two makers' tables are different grades (market grade against mill grade) and differ at nearly every count; state the wire diameter, not just the mesh, when you order. - Mesh sizes are normally ordered as 'mesh × mesh × wire diameter' (for example 10 × 10 × 0.025). The Woven Wire Products stainless rows (14 to 20 mesh, 0.009 in wire) are the fine-wire, high-open-area version and carry T-304 and T-316 data sheets on the maker's site (not read). Wire diameters in mm are converted × 25.4 (computed) where the maker does not print them. Other weaves (twill, Dutch), rectangular mesh, space cloth and welded wire mesh are not covered here. - Sieves and screens: US sieve numbers and mesh counts are close but not identical series; this page lists wire cloth only. Not to be confused with expanded metal (expanded-metal-standard-designations-swd-lwd), perforated sheet (perforated-metal-round-hole-standard-patterns) or the regenerator screens on this site. Gauge for wire diameters: awg-wire-gauge-table-astm-b258 and swg-standard-wire-gauge-table. No file: woven cloth is wire crossing over and under wire, and the crimp is not published as numbers. source mesh count wire dia (in) wire dia (mm) opening (in) opening (mm) open area % (printed) open area % = 100 × (1 − m d)² (computed) opening in = 1/m − d (computed) Woven Wire Products, market grade 2 mesh 0.063 1.600 0.437 11.100 76.4 76.4 0.4370 Woven Wire Products, market grade 3 mesh 0.054 1.372 0.279 7.087 70.1 70.2 0.2793 Woven Wire Products, market grade 4 mesh 0.047 1.194 0.203 5.156 65.9 65.9 0.2030 Woven Wire Products, market grade 4 mesh 0.063 1.600 0.187 4.750 56.0 56.0 0.1870 Woven Wire Products, market grade 5 mesh 0.041 1.041 0.159 4.039 63.2 63.2 0.1590 Woven Wire Products, market grade 5 mesh 0.047 1.194 0.153 3.886 58.5 58.5 0.1530 Woven Wire Products, market grade 6 mesh 0.035 0.889 0.132 3.353 62.7 62.4 0.1317 Woven Wire Products, market grade 7 mesh 0.035 0.889 0.108 2.743 57.0 57.0 0.1079 Woven Wire Products, market grade 8 mesh 0.028 0.711 0.097 2.464 60.2 60.2 0.0970 Woven Wire Products, market grade 8 mesh 0.032 0.813 0.093 2.362 55.4 55.4 0.0930 Woven Wire Products, market grade 9 mesh 0.032 0.813 0.079 2.007 50.7 50.7 0.0791 Woven Wire Products, market grade 10 mesh 0.025 0.635 0.075 1.905 56.3 56.2 0.0750 Woven Wire Products, market grade 12 mesh 0.023 0.584 0.06 1.524 52.4 52.4 0.0603 Woven Wire Products, market grade 14 mesh 0.02 0.508 0.051 1.295 51.0 51.8 0.0514 Woven Wire Products, market grade 16 mesh 0.018 0.457 0.0445 1.130 50.7 50.7 0.0445 Woven Wire Products, market grade 16 mesh 0.023 0.584 0.0395 1.003 39.9 39.9 0.0395 Woven Wire Products, market grade 18 mesh 0.017 0.432 0.0386 0.980 48.3 48.2 0.0386 Woven Wire Products, market grade 20 mesh 0.016 0.406 0.034 0.864 46.2 46.2 0.0340 Woven Wire Products, market grade 22 mesh 0.015 0.381 0.0305 0.775 45.0 44.9 0.0305 Woven Wire Products, market grade 24 mesh 0.014 0.356 0.0277 0.704 44.2 44.1 0.0277 Woven Wire Products, market grade 30 mesh 0.012 0.305 0.0213 0.541 41.0 41.0 0.0213 Woven Wire Products, market grade 30 mesh 0.0125 0.318 0.0208 0.528 39.1 39.1 0.0208 Woven Wire Products, market grade 35 mesh 0.011 0.279 0.0176 0.447 37.8 37.8 0.0176 Woven Wire Products, market grade 40 mesh 0.01 0.254 0.015 0.381 36.0 36.0 0.0150 Woven Wire Products, market grade 40 mesh 0.0095 0.241 0.0155 0.394 38.4 38.4 0.0155 Woven Wire Products, market grade 45 mesh 0.008 0.203 0.0142 0.361 41.0 41.0 0.0142 Woven Wire Products, market grade 45 mesh 0.0095 0.241 0.0127 0.323 32.7 32.8 0.0127 Woven Wire Products, market grade 50 mesh 0.009 0.229 0.011 0.279 30.3 30.3 0.0110 Woven Wire Products, market grade 60 mesh 0.0075 0.190 0.0092 0.234 30.3 30.3 0.0092 Woven Wire Products, market grade 70 mesh 0.0065 0.165 0.0078 0.198 29.7 29.7 0.0078 Woven Wire Products, market grade 70 mesh 0.007 0.178 0.0073 0.185 26.1 26.0 0.0073 Woven Wire Products, market grade 80 mesh 0.0055 0.140 0.007 0.178 31.4 31.4 0.0070 Woven Wire Products, market grade 90 mesh 0.005 0.127 0.0061 0.155 30.1 30.3 0.0061 Woven Wire Products, market grade 100 mesh 0.0045 0.114 0.0055 0.140 30.3 30.3 0.0055 Woven Wire Products, market grade 110 mesh 0.004 0.102 0.0051 0.130 31.4 31.4 0.0051 Woven Wire Products, market grade 120 mesh 0.0037 0.094 0.0046 0.117 30.9 30.9 0.0046 Woven Wire Products, market grade 150 mesh 0.0026 0.066 0.0041 0.104 37.4 37.2 0.0041 Woven Wire Products, market grade 200 mesh 0.0021 0.053 0.0029 0.074 33.6 33.6 0.0029 Woven Wire Products, market grade 325 mesh 0.0014 0.036 0.0017 0.043 30.0 29.7 0.0017 Woven Wire Products, stainless (T-304 / T-316 sheets) 14 mesh 0.009 0.229 0.0624 1.58 76.4 76.4 0.0624 Woven Wire Products, stainless (T-304 / T-316 sheets) 16 mesh 0.009 0.229 0.0535 1.359 73.3 73.3 0.0535 Woven Wire Products, stainless (T-304 / T-316 sheets) 18 mesh 0.009 0.229 0.0466 1.184 70.2 70.2 0.0466 Woven Wire Products, stainless (T-304 / T-316 sheets) 20 mesh 0.009 0.229 0.041 1.041 67.2 67.2 0.0410 Newark Wire Cloth, mill grade 2 × 2 0.054 1.37 0.446 11.33 79.6 79.6 0.4460 Newark Wire Cloth, mill grade 3 × 3 0.041 1.04 0.292 7.43 76.9 76.9 0.2923 Newark Wire Cloth, mill grade 4 × 4 0.035 0.89 0.215 5.46 74.0 74.0 0.2150 Newark Wire Cloth, mill grade 5 × 5 0.032 0.81 0.168 4.27 70.6 70.6 0.1680 Newark Wire Cloth, mill grade 6 × 6 0.028 0.71 0.139 3.52 69.2 69.2 0.1387 Newark Wire Cloth, mill grade 7 × 7 0.028 0.71 0.115 2.92 64.6 64.6 0.1149 Newark Wire Cloth, mill grade 8 × 8 0.025 0.64 0.1 2.54 64.0 64.0 0.1000 Newark Wire Cloth, mill grade 9 × 9 0.023 0.58 0.088 2.24 62.9 62.9 0.0881 Newark Wire Cloth, mill grade 10 × 10 0.02 0.51 0.08 2.03 64.0 64.0 0.0800 Newark Wire Cloth, mill grade 11 × 11 0.02 0.51 0.071 1.8 60.8 60.8 0.0709 Newark Wire Cloth, mill grade 12 × 12 0.018 0.46 0.065 1.66 61.5 61.5 0.0653 Newark Wire Cloth, mill grade 14 × 14 0.017 0.43 0.054 1.38 58.1 58.1 0.0544 Newark Wire Cloth, mill grade 16 × 16 0.016 0.41 0.047 1.18 55.4 55.4 0.0465 Newark Wire Cloth, mill grade 18 × 18 0.015 0.38 0.041 1.03 53.3 53.3 0.0406 Newark Wire Cloth, mill grade 20 × 20 0.014 0.36 0.036 0.91 51.8 51.8 0.0360 Newark Wire Cloth, mill grade 22 × 22 0.0135 0.34 0.032 0.81 49.4 49.4 0.0320 Newark Wire Cloth, mill grade 24 × 24 0.013 0.33 0.029 0.73 47.3 47.3 0.0287 Newark Wire Cloth, mill grade 26 × 26 0.011 0.28 0.027 0.7 51.0 51.0 0.0275 Newark Wire Cloth, mill grade 28 × 28 0.01 0.25 0.026 0.65 51.8 51.8 0.0257 Newark Wire Cloth, mill grade 30 × 30 0.0095 0.24 0.024 0.61 51.1 51.1 0.0238 Newark Wire Cloth, mill grade 32 × 32 0.009 0.23 0.022 0.57 50.7 50.7 0.0222 Newark Wire Cloth, mill grade 34 × 34 0.009 0.23 0.02 0.52 48.2 48.2 0.0204 Newark Wire Cloth, mill grade 36 × 36 0.009 0.23 0.019 0.48 45.7 45.7 0.0188 Newark Wire Cloth, mill grade 38 × 38 0.0085 0.22 0.018 0.45 45.8 45.8 0.0178 Newark Wire Cloth, mill grade 40 × 40 0.0085 0.22 0.017 0.42 43.6 43.6 0.0165 Newark Wire Cloth, mill grade 45 × 45 0.008 0.2 0.014 0.36 41.0 41.0 0.0142 Newark Wire Cloth, mill grade 50 × 50 0.0075 0.19 0.013 0.32 39.1 39.1 0.0125 Newark Wire Cloth, mill grade 55 × 55 0.007 0.18 0.011 0.28 37.8 37.8 0.0112 Newark Wire Cloth, mill grade 60 × 60 0.0065 0.17 0.01 0.26 37.2 37.2 0.0102 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Woven Wire Products: Market grade wire mesh: mesh count, wire diameter, opening, open area %, 2 to 325 mesh — web — Maker page; numbers only — https://www.wovenwire.com/market-grade-wire-mesh.htm - Woven Wire Products: Product specifications: stainless 14, 16, 18, 20 mesh with 0.009 in wire (opening in inch and mm, wire in inch and mm, open area) — web — Maker page; numbers only — https://www.wovenwire.com/reference/product-specifications.htm - Newark Wire Cloth: Mill grade wire cloth: 2 × 2 to 60 × 60 mesh, wire diameter, opening and open area in inch and mm — web — Maker sheet; numbers only — https://newarkwire.com/wp-content/uploads/MILL-GRADE-WIRE-CLOTH.pdf No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned. API: https://xemstudio.com/api/geometry?object=woven-wire-mesh-sizes-opening-open-area