Convert Section Area In Square Millimetres (mm², Wire Section Area) to U.K. Needle Size (SWG) (Knitting Needle And Crochet Hook Sizes)

This conversion page allows to find the closest wire gauge to the diameter or area section you need. If the closest one is not an exact match, the difference in the area is shown as a percentage. Try to see it in action!
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Section area in square millimetres (mm²)
Wire section area
U.K. Needle Size (SWG)
Knitting Needle and Crochet Hook Sizes

This page features online conversion from Section area in square millimetres to U.K. Needle Size (SWG). These units belong to different measurement systems. The first one is from Wire Section Area. The second one is from Knitting Needle And Crochet Hook Sizes.

If you need to convert other units, please start with the home page. You can also switch to the converter for U.K. Needle Size (SWG) to Section area in square millimetres.

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Did you know?
Standard Wire Gauges were officially settled in the Great Britain in 1883. The new standard was based on Birmingham Wire Gauge. Historically the gauge designated the number of drawing operations (passing the wire through a draw palate to make in thinner) that were required to produce the wire of desired thickness. Before the standard system was introduces, wire manufactures used their own proprietary standards.
? Not a valid U.K. needle number. Sizes are from 7/0 to 50. ? Not a valid AWG number. ? Not a valid U.S. needle number. Sizes are from 6/0 to 11, 13, 15, 17, 19, 35 or 50. ? Not a valid B.W.G. number. Gauges are from 5/0 to 36. ? Wire diameter or section area should be more than zero ? Not a valid ASW music gauge. Gauges are from 6/0 to 45. ? Not a valid Needle Gauge. Gauges are from 6 to 34. ? Not a valid English Music Wire Gauge. Gauges are from 2 to 30. ? Not a valid W&M gauge. Gauges are from 7/0 to 50. ? Not a valid French Gauge. Gauges are 1 and up. ? Crochet hook sizes may be B, C, D, E, F, G, H, I, K, L, M, N, P, Q, or S. ? Not a valid old U.S. needle number. ? Not a valid SWG number. Gauges are from 7/0 to 50. ? Please enter wire cross-section area and optional percentage difference. ? Not a valid Stubs' Steel Wire Gauge. Gauges are from 1 to 80.

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