14 Gauge Steel Thickness: A Complete Guide

by kalpataru | Jul 11, 2025 | Blog | 0 comments

Gauge is a widely recognized method for measuring the thickness of steel sheets, prominently used in manufacturing, fabrication, and construction industries. The gauge number directly indicates the thickness and consequently, the strength of the metallic sheet. Specifically, 14 gauge steel corresponds to a thickness of approximately 0.0747 inches or 1.9 mm. In practical terms, the thickness of 14 gauge steel sheets typically equals 1.90 mm for standard steel and slightly thicker at 2.0 mm for stainless steel sheets. Depending on specific compliance requirements and application standards, you can select either millimeters or inches for expressing the thickness of 14 gauge stainless steel

Thickness of 14 Gauge Sheet Metal

The thickness of 14 gauge sheet metal depends on several factors, including the type of material, its specific grade, and additional treatments such as galvanization or protective coatings. For instance, 14 gauge stainless steel generally measures around 0.0781 inches or approximately 2.0 mm, making it slightly thicker than standard sheet steel of the same gauge. Although gauge measurements are widely associated with steel varieties including galvanized or stainless steel, they can also be applied to non-ferrous metals like aluminum. In this case, 14 gauge aluminum sheets typically have a thickness of about 0.0641 inches or 1.6 mm. It’s important to remember that these thicknesses represent standard guidelines. Actual measurements for 14 gauge aluminum sheet thickness might differ slightly depending on regional manufacturing practices or individual suppliers. Therefore, buyers are advised to reference specific conversion charts or specifications provided by their local vendors for precise values.

14 Gauge Sheet Metal Thickness (in Inches & Millimeters)

Need a quick reference for 14 gauge metal thickness? Below is a table detailing the thickness of several common metals in both inches and millimeters. You’ll notice that 14 gauge thickness isn’t universal; it varies depending on the type of metal due to differences in density and composition. This chart serves as a convenient tool for accurately determining sheet metal thickness highlighting how the 14 gauge measurement differs across materials.

Material	Inch	mm
14 gauge stainless steel thickness	0.0781	1.984
14 ga aluminium sheet thickness	0.0641	1.628
14 gauge carbon steel sheet thickness	0.0747	1.897
14 ga galvanized sheet thickness	0.0785	1.994
14 gauge copper sheet thickness	0.083	2.108
14 ga brass sheet thickness	0.06408	1.628

Thickness Tolerance of 14 Gauge Steel

Tolerance is a small acceptable variation in measurements. This chart shows the tolerance for 14 gauge steel thickness. It is important for projects needing high precision.

Grade	Inch	Tolerance
14 gauge stainless steel sheet tolerance	0.0781	0.004
5052 H32 14 gauge aluminium sheet tolerance	0.0641	± 0.0040” 0.10mm
14 gauge carbon steel sheet tolerance	0.0747	0.0817 0.0677

14 Gauge Sheet Weight Chart

This chart helps you find the weight of different 14 gauge materials. The weight is shown per square foot and per square meter. Knowing the weight is useful for shipping and structural planning. The 14 gauge metal thickness directly affects the weight.

Material	Inch	mm	Weight (lb/ft²)	Weight ( kg/m ²)
14 gauge stainless steel sheet thickness	0.0781	1.984	3.250	15.869
14 ga aluminium sheet thickness	0.0641	1.628	0.905	4.417
14 gauge carbon steel sheet thickness	0.0747	1.897	3.047	14.879
14 ga galvanized sheet thickness	0.0785	1.994	3.202	15.636

Sheet Metal Gauge Conversion Chart

Here is a comprehensive chart for sheet metal thickness. This table shows the conversion for different gauge numbers to inches and millimeters for both steel and aluminum.

Gauge (ga)	Steel Thickness (in.)	Steel Thickness (mm)	Aluminum Thickness (in.)	Aluminum Thickness (mm)
3	0.2391	6.07	0.2294	5.83
4	0.2242	5.69	0.2043	5.19
5	0.2092	5.31	0.1819	4.62
6	0.1943	4.94	0.162	4.11
7	0.1793	4.55	0.1443	3.67
8	0.1644	4.18	0.1285	3.26
9	0.1495	3.80	0.1144	2.91
10	0.1345	3.42	0.1019	2.59
11	0.1196	3.04	0.0907	2.30
12	0.1046	2.66	0.0808	2.05
13	0.0897	2.28	0.072	1.83
14	0.0747	1.90	0.0641	1.63
15	0.0673	1.71	0.0571	1.45
16	0.0598	1.52	0.0508	1.29
17	0.0538	1.37	0.0453	1.15
18	0.0478	1.21	0.0403	1.02
19	0.0418	1.06	0.0359	0.91
20	0.0359	0.91	0.032	0.81
21	0.0329	0.84	0.0285	0.72
22	0.0299	0.76	0.0253	0.64
23	0.0269	0.68	0.0226	0.57
24	0.0239	0.61	0.0201	0.51
25	0.0209	0.53	0.0179	0.45
26	0.0179	0.45	0.0159	0.40
27	0.0164	0.42	0.0142	0.36
28	0.0149	0.38	0.0126	0.32
29	0.0135	0.34	0.0113	0.29
30	0.012	0.30	0.01	0.25
31	0.0105	0.27	0.0089	0.23
32	0.0097	0.25	0.008	0.20
33	0.009	0.23	0.0071	0.18
34	0.0082	0.21	0.0063	0.16
35	0.0075	0.19	0.0056	0.14
36	0.0067	0.17	–	–

How to Calculate the Weight of 14 Gauge Sheet Metal

Accurately calculating the weight of sheet metal is essential to manage procurement and operational costs effectively. The weight (W) of 14 gauge sheet metal depends on its length, width, thickness, and the specific density of the material used.

Weight Formula:

For example, 14 gauge sheet steel typically weighs around 3.125 lb/ft² (15.1 kg/m²). This figure varies depending on the steel type; for instance, a 14 gauge 304 stainless steel sheet is slightly thicker and weighs around 3.15 lb/ft². Galvanized steel sheets, due to their zinc coating, are even heavier at approximately 3.281 lb/ft².

Steel’s density typically ranges between 7,850 and 7,930 kg/m³, whereas aluminum is considerably lighter at 2,750 kg/m³. Therefore, 14 gauge aluminum sheets weigh significantly less, around 0.905 lb/ft² (4.38 kg/m²), making aluminum a preferred choice in sectors where weight matters, such as aviation and transportation.

How to Protect 14 Gauge Steel from Rust

Rust significantly impacts the durability and functional lifespan of 14 gauge steel sheets. Selecting the right stainless steel grade, such as 304 stainless steel, can provide long-term protection, especially in harsh chemical environments and resist various types of corrosion.

Conversely, a 14 gauge carbon steel sheet is more prone to corrosion due to its higher carbon content, especially when exposed to moisture.

To mitigate corrosion, consider the following protective measures:

Galvanization: Applying a zinc coating provides substantial corrosion resistance.
Electroplating or Powder Coating: Offers additional surface protection using coatings such as epoxy, acrylic, or polyurethane.
Red Oxide Primer or Metal Paint: Essential for untreated mild steel sheets to prevent surface rust.
Pickling or Mechanical Grinding: Effective methods to remove rust and prepare the surface.
Regular Cleaning: Keep metal surfaces free from dirt and grime using mild soap and water.
Proper Storage: Store your sheets in dry conditions, avoiding exposure to extreme temperatures and moisture.

Conclusion

Understanding the 14 gauge system is essential for successful project outcomes. This guide provides key insights into how 14 gauge thicknesses vary between metals and includes practical tips for cutting and protecting against rust.

For all your sheet metal needs, trust Kalpataru Piping Solutions. We offer an extensive selection of high-quality 14 gauge sheets and expert guidance to help you choose the ideal metal thickness. Whether you require stainless steel or pipe thickness measurements in mm, we’re here to assist you. Contact Kalpataru Piping Solutions today for reliable materials and professional support.

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