---
type: "sheet-metal-gauge"
gauge_number: "0"
material: "us-standard"
material_name: "U.S. Standard Gauge"
gauge_system: "USG"
thickness_in: 0.3125
thickness_mm: 7.9375
weight_lb_per_sqft: 12.5
weight_kg_per_sqm: 61.03
standard: "15 U.S.C. 206; Manufacturers' Standard Gauge; Brown & Sharpe / AWG"
verified: "August 1, 2026"
url: https://shopmath.org/gauges/us-standard/0
---

# 0 Gauge U.S. Standard Gauge — Sheet Metal Thickness in Inches and Millimetres

0 gauge us standard is 0.3125 in (7.938 mm) thick. That figure is on the USG — gauge is a material-specific numbering scheme, not a unit, so the same number is a different thickness in another material.

- **Gauge**: 0
- **Material**: U.S. Standard Gauge
- **Gauge system**: USG
- **Thickness**: 0.3125 in (7.938 mm)
- **Weight**: 12.500 lb/ft² (61.03 kg/m²)

## 0 Gauge U.S. Standard Gauge Thickness

| Property | Value |
| --- | --- |
| Thickness (in) | 0.3125 |
| Thickness (mm) | 7.938 |
| Weight (lb/ft²) | 12.500 |
| Weight (kg/m²) | 61.03 |
| Gauge system | USG |

## Sources and Method for 0 Gauge U.S. Standard Gauge

### U.S. Standard Gauge gauge thicknesses

- **Source**: 15 U.S.C. 206 (Act of Mar. 3, 1893, ch. 221, 27 Stat. 746) — U.S. Standard Gauge for sheet and plate iron and steel; 15 U.S.C. 206 statutory weights; MSG (41.82 lb/ft2 per inch), galvanized zinc allowance, and Brown & Sharpe formula per docs/research/data-sourcing.md §3.7
- **Method**: computed
- **Verified against**: Wikipedia Sheet metal, Standard sheet metal gauges table (CC BY-SA 4.0) — 137/137 checks passed at 0.05 mil

### Assumptions

- Gauge is a numbering scheme, not a unit. A thickness is only meaningful with its material and gauge system stated.
- Sheet is supplied to a mill tolerance around these nominal thicknesses; measure the stock when the fit matters.
- Dataset scope: EXCLUDED: stainless steel (genuinely ambiguous convention, only one source in hand), zinc, copper, brass, steel tube wall.

**Data last verified**: August 1, 2026

## Common Questions About 0 Gauge U.S. Standard Gauge

### How thick is 0 gauge us standard?

0 gauge us standard is 0.3125 in (7.938 mm) thick, on the USG.

### What is 0 gauge in mm?

0 gauge us standard is 7.938 mm. Gauge is not a unit — the same number means a different thickness in a different material, so the material has to be stated with it.

### How much does 0 gauge us standard weigh per square foot?

12.500 lb per square foot (61.03 kg per square metre).

## Related pages

- Thicker (lower gauge number): [00 gauge u.s. standard gauge](https://shopmath.org/gauges/us-standard/00.md) — 0.3438 in
- Thinner (higher gauge number): [1 gauge u.s. standard gauge](https://shopmath.org/gauges/us-standard/1.md) — 0.2813 in
- All u.s. standard gauge gauges: [U.S. Standard Gauge gauge chart](https://shopmath.org/gauges/us-standard.md)
- All materials and gauges: [Sheet metal gauge reference](https://shopmath.org/gauges.md)
- Full cross-material chart: [Sheet metal gauge chart](https://shopmath.org/charts/sheet-metal-gauge.md)

---

*Source: [ShopMath](https://shopmath.org/gauges/us-standard/0) — data verified August 1, 2026. Reference data; verify against the governing standard before manufacture.*