Wire, Textile & Trade Gauges
Every wire, textile & trade gauges calculator on CalcEngines — unit converters, derived indices and interpretive tools, each with its formula, a worked example and the reference intervals it is judged against.
9 calculators in this section
- Drill Bit Size ConverterFractional inch, number (1–80), letter (A–Z) and metric drill sizes, all converted through diameter and all four directions at once — plus the nearest bit you actually own in each system, the tap drill for a metric or Unified thread at any thread percentage, and the clearance hole for the same screw.
- Fabric GSM Converterg/m², oz/yd² and ounces per LINEAR yard — and the third of those depends on the roll width, which is why this is not a one-line conversion. A 12 oz denim is 407 g/m² whatever the width; a yard off the roll weighs a third more at 60 inches than at 45.
- Nail Size ConverterPenny sizes (2d, 6d, 16d) to length in inches and millimetres, shank diameter and wire gauge — with the two facts every chart hides: the (d + 2) ÷ 4 rule fails above 10d, and a 16d common, box and sinker are the same length and three different nails.
- Needle Gauge ConverterThree completely unrelated needle sizing systems in one place, because a search for "needle gauge" returns all three mixed together: hypodermic needles on the Birmingham wire gauge, sewing machine needles as the Nm/Singer pair, and knitting needles in metric, US and old UK sizes. Two of the three number backwards.
- Sheet Metal Gauge ConverterGauge number to thickness in millimetres and inches, and back — for uncoated steel, galvanised steel, stainless steel, aluminium, brass and copper. The point of the page is that these are four different answers: the gauge number was defined as a weight per square foot, so what it means in thickness depends on the metal.
- Thread Pitch and TPI ConverterMetric pitch to threads per inch and back, with the standard ISO coarse and fine pitches and the UNC/UNF series so you can identify what you are holding — plus the traps: BSP is 55° not 60°, a BSP size is a bore, and M5×0.8 will start in a #10-32 hole.
- Wire Gauge Converter — AWG and SWGAWG, SWG, millimetres of diameter, square millimetres of area and circular mils, in both directions — and the thing a single-system calculator cannot tell you: a 16 AWG wire and a 16 SWG wire are not the same wire. The two scales coincide at exactly one gauge and disagree everywhere else, by up to 53% in diameter.
- Wood Screw Size ConverterScrew gauge number to shank diameter in inches and millimetres and back, with the metric equivalent — and the pilot hole and clearance hole sizes for softwood and hardwood, which is what the reader actually came for. The gauge-to-diameter rule is a published straight line, not a table.
- Yarn Count Convertertex, decitex, denier, Nm, Ne, worsted, linen lea and the woollen counts, all in one place — with the inversion made obvious, because the direct systems go up as the yarn gets thicker and the indirect ones go down. Treat them alike and your answer is not slightly wrong, it is upside down.