Converting Steel Gauge to mm

Share This Post

stainless steel gauge to mm

Sheet metal gage (or gage) measures the thickness of material. A higher number indicates thinner sheets. Sheet metal gauge values do not follow standard or metric norms and will depend on what material type is being measured.

Knowledge of metal gauge is vital when undertaking any project involving metal. This article will describe the gauge system and provide a sheet metal gauge chart.


Thickness of sheet metal can be a critical component in many applications, from its impact resistance and durability to proper fitting and function compliance with industry regulations and standards. To determine its thickness, a gauge chart or online calculator are both useful in providing a reference. A gauge chart will list each metal’s gauge number along with its thickness measurement in inches or millimeters while an online calculator allows you to enter gauge number and material type to get thickness information in your chosen unit of measurement.

While originally created to measure wire thickness in Britain, gauge systems have since evolved into being used across both wire and sheet metal applications. Gauge numbers do not correspond with either standard or metric units and remain independent of either measurement system. A metal gauge chart provides an easy way of identifying actual thickness measurements on any piece of steel, and any professional metal fabrication company will be happy to assist in selecting an ideal gauge gauge for your project.

Additionally, it’s also essential to know which metal type you are working with. Different metals have various properties and require different levels of thickness; for instance, 18-gauge stainless steel sheet is much thicker than 20-gauge aluminum due to the presence of nickel and molybdenum that makes it more resilient.

Those unfamiliar with gauge systems may find reading steel gauge charts confusing. It is important to keep in mind that numbers on such charts do not indicate specific thickness but instead represent weight per area ratios; higher numbers mean thinner metal while lower ones indicate thicker pieces of metal.

Metal gauge charts are invaluable tools that will allow you to easily and quickly gauge the thickness of specific pieces of metal. A steel gauge chart can serve both professional and amateur metal workers alike in selecting appropriate material for their next projects.


As when working with sheet metal, knowing the thickness of your material is critical. A gauge value provides this information; this value indicates how thick or thin the sheet is. Due to differences between standard and metric measurement systems, understanding how to convert gauge numbers to actual thickness of metal requires knowledge. Thankfully, several gauge conversion charts exist that provide you with thickness in inches and millimeters according to each gauge size.

The gauge system was originally devised to help wire craftsmen quantify their products without needing to measure each diameter strand separately. Instead, craftsmen counted how often the wire was drawn in, with more times drawn equaling smaller diameter and thus higher gauge number. Later adopted by steel mills as an alternative measurement system indicating thickness rather than diameter but still using the metric system for wire diameter measurements.

To quickly and accurately gauge the thickness of stainless steel sheeting, you can refer to either an online calculator or metal gauge chart. Both options provide thickness readings in inches and millimeters according to gauge number – an invaluable resource for individuals unfamiliar with sheet metal gauge systems who find it hard to translate gauge numbers into real measurements.

As it’s essential to keep in mind, the thickness of a specific gauge varies based on its material of construction – for instance a metal sheet measuring 18 gauge may differ in thickness depending on whether its made from aluminum or steel. Furthermore, thickness can differ among manufacturers; so before using a gauge conversion chart it’s crucial that you understand which materials you are working with.


A sheet metal gauge chart indicates the thickness of various materials by number; lower numbers represent thinner materials and thicker metals tend to weigh more per unit area, enabling steel mills to sell their steel according to density rather than size.

Sheet metal gauges serve a multitude of functions, including verifying that an object meets certain dimensions. For instance, steel fabrication companies often rely on sheet metal gauge charts to verify whether pieces of stainless steel meet industry specifications for their projects – helping avoid costly mistakes while assuring quality results.

The length of a piece of metal depends on its thickness; thicker pieces have longer lengths. A gauge conversion chart was designed to make providing this information easy for anyone. A common misconception is that larger numbers indicate thicker metal; this may or may not always be true depending on production process and type.

An easy and accurate way to determine metal thickness is with a steel gauge conversion chart. This chart will list thickness corresponding to various materials such as steel, aluminum and brass; additionally it shows decimal equivalent gauge numbers depending on each material’s gauge number; each gauge number corresponds with different thickness levels depending on which material it was measured on.

As when working with sheet metal, it is crucial that one understands the gauge system and its workings. A gauge conversion chart is an invaluable way of estimating thickness; however, its values should neither be standard nor metric as this means the numbers do not represent actual measurements and the differences between various metric and standard values may not be equal.


Steel gauge is a measurement used to indicate the thickness of metal sheets; higher numbers indicate thinner sheets. There are different gauge sizes with their own respective weight. A metal fabrication shop may use gauge conversion charts to establish equivalent inches or millimeter thickness equivalents for specific gauge standards as well as weight per unit area of metal. This data can help calculate shipping costs as well as material required for projects.

Stainless steel gauges should not be confused with steel grades, which describe its composition. Both terms share similar characteristics. For instance, stainless steel gauges are measured in mils. Sheet metal thickness has an impactful effect on how welders, fabricators and machine operators handle and fabricate metal, as well as the tools used in its manipulation process and how long it takes. Plus, thickness may affect its cost.

The gauge system was devised by drawing wire through increasingly fine dies and assigning each drawing with a number. Steel industry professionals quickly adopted this gauge measurement, using its numbers to specify thickness of sheets made of steel and specify sheet metal thickness charts for stainless steel, cold-rolled steel, galvanized steel and aluminum sheet thickness measurements. Today this measurement system remains popular. This article describes how gauges work while providing sheet metal thickness charts for stainless steel, cold-rolled steel, galvanized steel and aluminum metal thickness.

This chart displays standard stainless steel manufacturers gauge thickness in inches and millimeters for metal fabricators and professionals needing to know weight of a specific stainless steel gauge, or size a piece of metal accurately. It can be an extremely helpful resource.

When comparing different types of stainless steel thickness, it’s essential to take note of their respective densities. Lower density materials typically weigh less, whereas thicker versions tend to have greater density. A lower gauge has greater pressure-bearing capacities as its composition consists of softer metal.

Subscribe To Our Newsletter

Get updates and learn from the best

More To Explore

Gold Mirror Stainless Steel Sheet

Gold mirror stainless steel sheet is a high-grade and multipurpose product. With high reflectivity that enhances light and image clarity and sharpness, and an anticorrosion

Do You Want To Boost Your Business?

drop us a line and keep in touch