A Leading Flat Steel Importer & Distribution House in Pakistan

Steel Gauge Conversion Chart

Understanding steel gauge, millimeter and inch measurements is important when selecting the right steel thickness for construction, fabrication, manufacturing and other industrial applications. Our Steel Gauge Conversion Chart provides a convenient reference for converting common steel gauge numbers into their corresponding millimeter (mm) and inch (in) measurements.

This chart also provides the approximate weight in kilograms per square foot (kg sq./ft.) for the listed steel thicknesses. It can help customers, fabricators, contractors and steel professionals quickly compare different gauge specifications.

Gauge Common steel gauge numbers from 10 gauge to 30 gauge.

Millimeter Thickness converted into millimeters (mm).

Inches & Weight Equivalent inch measurement and approximate kg per sq. ft.

Steel Thickness Conversion

Use the following chart to compare steel gauge numbers with their corresponding thickness in millimeters and inches. The weight values are provided as a convenient reference for steel sheet calculations.

Important Note: Gauge-to-thickness conversions can vary depending on the material standard and product type. Weight figures should be treated as reference values. For exact specifications, product weight and material requirements, please confirm the applicable steel standard and specification before placing an order.

STEEL GAUGE CONVERSION CHART

Gauge	Millimeter (mm)	Inches (in)	Weight in kg sq./ft.	Gauge	Millimeter (mm)	Inches (in)	Weight in kg sq./ft.
10 g	3.18	0.125	2.318	21 g	0.80	0.031	0.645
11 g	2.83	0.111	2.063	22 g	0.79	0.031	0.577
12 g	2.52	0.099	1.836	23 g	0.71	0.027	0.513
13 g	2.24	0.088	1.636	24 g	0.63	0.024	0.459
14 g	1.99	0.074	1.454	25 g	0.56	0.022	0.408
15 g	1.77	0.069	1.295	26 g	0.50	0.019	0.363
16 g	1.59	0.062	1.159	27 g	0.44	0.017	0.323
17 g	1.41	0.055	1.031	28 g	0.40	0.015	0.289
18 g	1.26	0.049	0.918	29 g	0.35	0.013	0.257
19 g	1.12	0.044	0.813	30 g	0.31	0.012	0.228
20 g	1.00	0.039	0.727

Steel Gauge Reference

Steel gauge is commonly used to describe the thickness of steel sheet and other flat steel products. As the gauge number increases, the corresponding steel thickness generally becomes thinner. This conversion chart makes it easier to identify the equivalent thickness when specifications are provided in different measurement systems.

For steel sheets, coils, cold rolled steel and galvanised steel products, always verify the required thickness, width, grade and applicable material standard with your steel supplier before purchasing.

Steel Weight Calculator

Calculate the weight of your steel plate or coil order instantly and plan your purchase with confidence.

Enter DimensionsInput size, thickness and length

Accurate WeightInstant, correct weight calculation

Plan Your CostMake better purchasing decisions

Calculate Now

Select material, shape & dimensions — instant & free

Material

Mild Steel (7.85 g/cm³)
Stainless Steel (8.00 g/cm³)
Aluminium (2.70 g/cm³)
Cast Iron (7.20 g/cm³)
Acetal (1.41 g/cm³)

Form / Shape

Round Bar
Square Bar
Rectangular Bar
Sheet / Plate
Hex Bar

Width

Thickness / Depth

Length

Quantity (pcs)

Weight (kg) 0.00 kg

Weight (lb) 0.00 lb

Note: weights are estimates for guidance only, based on typical material densities. Exact compositions may vary — contact us for a firm quote.

Certified Quality

Every batch checked against mill specifications before dispatch.

On-Time Delivery

Nationwide dispatch coordinated so your project stays on schedule.

Trusted Supplier

Straight dealing and consistent stock across steel grades.

Clear Pricing

Firm quotes on WhatsApp — no back-and-forth needed.

Ready to place an order?

Send us your requirement — grade, thickness and quantity — for a same-day quote.

Get a Quote on WhatsApp