Sheet Metal Gauge (Steel, Stainless & Aluminum) to mm & Inch Thickness Converter

Convert sheet metal gauge to mm/inch thickness and plate weight per m² / ft².

Standard Steel Thickness
1.52 mm (0.0598 in)
16 Gauge: Steel 1.52 mm • Stainless 1.59 mm • Aluminum 1.3 mm
Carbon Steel Thickness 1.52 mm (0.0598 in)
Stainless Steel Thickness 1.59 mm (0.0625 in)
Aluminum (B&S) Thickness 1.3 mm (0.0511 in)
Sheet Mass (2.97 m² Steel / Alu) 35.4 kg / 10.4 kg
Inputs
Gauge
Sheet metal gauge number (e.g., 10, 12, 14, 16, 18, 20, 22, 24).
m²
Sheet area in m² (e.g., 2.97 m² for a 4×8 ft sheet).
Results & Graph
Standard Steel Thickness
1.52 mm (0.0598 in)
16 Gauge: Steel 1.52 mm • Stainless 1.59 mm • Aluminum 1.3 mm
Carbon Steel Thickness
1.52 mm (0.0598 in)
Stainless Steel Thickness
1.59 mm (0.0625 in)
Aluminum (B&S) Thickness
1.3 mm (0.0511 in)
Sheet Mass (2.97 m² Steel / Alu)
35.4 kg / 10.4 kg

Standard Steel Thickness Sensitivity & Breakdown

16 Gauge: Steel 1.52 mm • Stainless 1.59 mm • Aluminum 1.3 mm
Graph 1 • Sheet Metal Gauge Number Sensitivity Recalculates the domain equation across 50% to 150% of the primary input while holding other parameters constant.
0 35.4 kg sheet 2.3 35.4 kg sheet 4.5 35.4 kg sheet 50%: 4.18 35.4 kg sheet 4.2 50% 75%: 2.66 35.4 kg sheet 2.7 75% 100%: 1.52 35.4 kg sheet 1.5 100% 125%: 0.91 35.4 kg sheet 0.9 125% 150%: 0.61 35.4 kg sheet 0.6 150%
Graph 2 • Primary & Supporting Metric Comparison Compares the primary output alongside supporting domain benchmarks.
Standard Steel Thickness 1.52 mm (0.0598 in) Carbon Steel Thickness 1.52 mm (0.0598 in) Stainless Steel Thickness 1.59 mm (0.0625 in) Aluminum (B&S) Thickness 1.3 mm (0.0511 in)
Graph 3 • Exact Output Table & Units Displays each calculated output in its exact domain unit.
Standard Steel Thickness1.52 mm (0.0598 in)Carbon Steel Thickness1.52 mm (0.0598 in)Stainless Steel Thickness1.59 mm (0.0625 in)Aluminum (B&S) Thickness1.3 mm (0.0511 in)Sheet Mass (2.97 m² Steel / Alu)35.4 kg / 10.4 kg
Summary: A 16-gauge carbon steel sheet measures 1.52 mm (0.0598 in) thick and weighs 35.4 kg across 2.97 m².
Summary: A 16-gauge carbon steel sheet measures 1.52 mm (0.0598 in) thick and weighs 35.4 kg across 2.97 m².
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Standard Steel Thickness Reference Schedule

GaugeSteel (mm)Steel (inch)Aluminum (mm)Steel kg / m²
10 ga3.42 mm0.1345"2.92 mm26.8 kg/m²
12 ga2.66 mm0.1046"2.27 mm20.9 kg/m²
14 ga1.9 mm0.0747"1.62 mm14.9 kg/m²
16 ga1.52 mm0.0598"1.3 mm11.9 kg/m²
18 ga1.21 mm0.0478"1.04 mm9.5 kg/m²
20 ga0.91 mm0.0359"0.78 mm7.2 kg/m²
24 ga0.61 mm0.0239"0.52 mm4.8 kg/m²

Formula & Mathematical Methodology: Sheet Metal Gauge ↔ mm/in Formula

Steelin ≈ 0.5625 × 0.892Gauge − 3
AreaMasskgm2 = Thicknessmm × Densitygcm3
Steel_in ≈ 0.5625 × 0.892^(Gauge − 3); AreaMass_kg_m2 = Thickness_mm × Density_g_cm3
  • Sheet Metal Gauge Number: Sheet metal gauge number (e.g., 10, 12, 14, 16, 18, 20, 22, 24).
  • Sheet Area Sq Meters: Sheet area in m² (e.g., 2.97 m² for a 4×8 ft sheet).

Rounding: Full IEEE-754 double precision internally; display values formatted to 2–4 significant figures.

Worked Example: Default Sheet Metal Gauge ↔ mm/in Scenario

Convert sheet metal gauge number (6 ga to 30 ga) into thickness in millimeters (mm) and decimal inches across Manufacturers’ Standard Carbon Steel, Stainless Steel, and Aluminum (B&S).

  1. Enter parameters for Sheet Metal Gauge ↔ mm/in in the input controls.
  2. Apply formula: Steel_in ≈ 0.5625 × 0.892^(Gauge − 3); AreaMass_kg_m2 = Thickness_mm × Density_g_cm3.
  3. Inspect the 3 interactive SVG charts and comparison table for sensitivity across input ranges.
Result: Produces instant Sheet Metal Gauge ↔ mm/in output with domain-verified units and sensitivity table.

Frequently Asked Questions

How is Sheet Metal Gauge ↔ mm/in calculated?

Sheet Metal Gauge (Steel, Stainless & Aluminum) to mm & Inch Thickness Converter uses the verified equation: Steel_in ≈ 0.5625 × 0.892^(Gauge − 3); AreaMass_kg_m2 = Thickness_mm × Density_g_cm3. Adjust any input field to recalculate all outputs and 3 SVG visualizations in real time.

What units does the Sheet Metal Gauge ↔ mm/in tool use?

Each field displays its exact unit label (Gauge, m²) so results remain dimensionally consistent.

Can I solve backwards for a target output using Goal Seek?

Yes. Click "🎯 Goal Seek" in the results toolbar to solve backwards for any numeric input parameter.

Unit Conversions · Industrial, Trade & Wire Units

Sheet Metal Gauge (Steel, Stainless & Aluminum) to mm & Inch Thickness Converter: inputs, method, and how to read the result

Convert sheet metal gauge to mm/inch thickness and plate weight per m² / ft².

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • Sheet Metal Gauge Number: Sheet metal gauge number (e.g., 10, 12, 14, 16, 18, 20, 22, 24).
  • Sheet Area Sq Meters: Sheet area in m² (e.g., 2.97 m² for a 4×8 ft sheet).

What the calculation includes

With the default values shown, Standard Steel Thickness is 1.52 mm (0.0598 in). The calculation follows Sheet Metal Gauge ↔ mm/in Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing Sheet Metal Gauge Number from 16 Gauge to 18 Gauge changes Standard Steel Thickness from 1.52 mm (0.0598 in) to 1.21 mm (0.0478 in). This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Inputs are within standard operating ranges for the specified equation.
  • Extreme boundary conditions may require specialized empirical adjustments.

Scope: Global Standard Check the assumptions and limitations against your situation before relying on the estimate.

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