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Gauge to mm conversion chart

Made by :Pauline Perles Co
Published on the :30/05/2026
Gauge to mm conversion chart
In summary

AWG (American Wire Gauge) is a unit of measurement used to evaluate the thickness of wires, essential for jewelry. The higher the AWG value, the smaller the diameter, making it easier to choose between Gold Filled and copper wires, for example. To help you, a conversion table between gauge and millimeter is also available.

You've found the perfect wire for your next piece of jewelry, but it's measured in gauges rather than millimeters? Don't panic, this guide is for you!

Here's everything you need to know so you'll never be stuck for an AWG measurement again.

What is AWG?

AWG (American Wire Gauge) is an American unit of measurement. It is used to evaluate three characteristics of a wire:

  • its diameter (in millimeters or inches)
  • its cross-sectional area
  • its electrical resistance

In DIY jewelry, it's mainly the diameter that interests us. This unit is used in particular for Gold Filled wire, Artistic Wire and Beadalon copper wire.

đź’ˇ Golden rule to remember: the higher the AWG number, the finer the wire. A 28 gauge wire is therefore much thinner than an 18 gauge wire.

But what does this measurement correspond to when converted to millimeters? Our gauge to mm conversion chart will help you:

tableau-conversion-gauge-mm

Some concrete examples from Perles & Co

To better visualize these correspondences, here are a few wires from our catalog:

You can find all our wires with their gauge and mm measurements directly on the product sheets.

Result
Schema  Gauge to mm conversion chart
Schema  Gauge to mm conversion chart
Pauline Perles Co
 Pauline Perles Co - Pauline Perles&Co
Moi, c'est Pauline, je suis assistante SEO chez Perles & Co et depuis mon arrivée, je me découvre une passion pour les bijoux DIY ! Quel plaisir de dénicher la nouveauté qui nous fait craquer et de confectionner des pièces personnalisées..! J'en apprends davantage chaque jour et je partage ça avec vous.

What is jewelry gauge?

Gauge (or AWG, American Wire Gauge) is an American unit of measurement that indicates the diameter of a wire. The higher the number, the thinner the wire. It is widely used for copper, brass and Gold Filled wires sold in jewelry stores.

How do I convert gauge to mm?

To convert an AWG measurement into millimeters, refer to the conversion table above. For example, an 18 gauge wire corresponds to 1.02 mm, and a 24 gauge wire to 0.51 mm.

Which gauge is the best way to start wire wrapping?

For beginners, 20 or 22 gauge (0.81 or 0.64 mm) is ideal: strong enough to hold the shape, but flexible enough to be worked by hand without too much effort. We recommend starting with copper before moving on to Gold Filled.

What's the difference between gauge and mm for wires?

They are simply two different measurement systems. The millimeter system is European, while the AWG (gauge) system is American. Many brands, such as Artistic Wire or Beadalon, use gauge, which is why it's a good idea to have a conversion table.

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Your questions (13)
You have a question about this sheet? Ask our team and the people who have already tested it. The Perles & Co community is here to help!
By Joelle (10/06/2025 06:45:05)
Peut on utiliser vos fils de cuivre pour faire de la dentelle aux fuseaux ?
Je cherche du fil de cuivre 0,2 mm , AWG32,
Merci, cordialement Joelle
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Our Lucie expert answers you (12/06/2025 09:38:22)
Bonjour, nous n'avons encore jamais testé le fil de cuivre avec la technique de la dentelle aux fuseaux. Toutefois, ce type de fil présente plusieurs inconvénients : sa rigidité, sa tendance à marquer facilement et son risque de casse en cas de mauvaise tension et peut endommager les fuseaux. Pour cette technique, les fils en coton ou en soie sont largement recommandés.
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By Luna (23/05/2025 19:21:03)
calibre 18 e calibre 26 in millimetri quanto sono?
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Our Lucie expert answers you (26/05/2025 08:47:02)
salve, come indicato nella tabella, calibro 26 = 0,405 mm e calibro 18 = 1,02 mm Grazie.
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By Tomei (08/05/2025 07:20:24)
un filo calibro 28 in mm quanto è?
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Our Laurence expert answers you (13/05/2025 09:15:21)
Hola,
Un alambre de calibre 28 mide aproximadamente 0,3 mm.
Gracias
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By Philippe (10/02/2025 13:46:29)
Bonjour,
Existe-t-il un moyen ou un outil dans le style "One Step 1.5 mm Looper" qui fonctionnerait avec du fil 'gauge' de 26 (0.4mm) ? Ou n'est-ce possible que manuellement avec une pince ronde ? Et si c'est le cas, quelle genre de pince faudrait-il acheter ? Je pensais alors à cet article : Pince ronde à ressort 15.5 cm - manche ergonomique by Perles&Co x1 - réf. HRA-073. Merci d'avance :)
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Our Tiffanie expert answers you (14/02/2025 09:26:57)
Bonjour, oui la pince fonctionne avec du 0,4 mm. C'est un fil fin donc pas de soucis. 
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By Castro (08/08/2024 05:14:05)
Hola una pregunta que significa 18G en una pulsera de oro?
Me dice eso pero no se que significa
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Our Laetitia M. expert answers you (09/08/2024 11:46:19)
Hola,
Se trata de un tamaño
Significa que mide 1,02 mm de diametro
Un saludo
 
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Your reviews (8)
Notices subject to control
4.5/5
Average Grades
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By florence (posted on : 05/06/2011 )
Merci, c'est toujours compliqué de s'y retrouver. Mais grâce à ce tableau, plus de soucis! à avoir avec soi quand on fait ses achats !
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By Françoise (posted on : 22/07/2014 )
Bravo pour ce changement efficace, lisible, pratique et intelligent !! et en plus notre pense-bête , je cherche tout le temps les conversions pour le fil métal merci merci : )
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By Tosetto sylvia (posted on : 16/05/2022 )
Un grand merci pour cette information aucune définition de gauche dans les lexiques professionnels joaillerie
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Our Lucie L. expert answers you (30/05/2022 16:03:50)
Bonjour Sylvia,

Merci pour votre avis très positif sur notre tableau de conversion. Cependant, vous semblez avoir noté ce contenu avec 1/5 étoiles. Pourriez-vous s'il vous plait modifier votre note afin qu'elle soit plus cohérente avec votre commentaire ?

Merci par avance,
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By Isabelle (posted on : 15/05/2020 )
Bien utile pour s'y retrouve dans les mesures.👏👏👏👏
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Our Perles & Co expert answers you (19/05/2020 14:34:39)
Merci Isabelle !
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By Anonyme (posted on : 05/08/2017 )
Hola, me gustaría saber si tenéis hilo de latón de grososr intermedio entre 1mm y 1.5mm
Gracias.
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Our Perles & Co expert answers you (07/08/2017 10:08:10)
Hola Tatiana. SĂ­, tenemos 1,3 mm.
https://www.perlesandco.com/Fil_de_laiton_Artistic_Wire_13_mm_Brut_x_76_m-p-74880.html
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Credits

Perles & Co, Internet & E-Commerce company [30/05/2026] Any reproduction, representation, adaptation, in any form whatsoever, even partial, is prohibited, except for reproduction for private use not intended for collective use, representation in the family circle (art. L 122-5 CPI) and online publishing on condition that the source is mentioned and a link is included to the corresponding page of our site www.perlesandco.com.