Aluminum Gauge Thickness Chart
Reference chart for aluminum gauge thickness in both inches and millimeters. Use this chart for quick conversions and reference when specifying material thickness for your sheet metal projects.
Aluminum Gauge Thickness Reference
| Gauge Number | Inches | MM |
|---|---|---|
| 7 | 0.144 | 3.67 |
| 8 | 0.129 | 3.26 |
| 9 | 0.114 | 2.91 |
| 10 | 0.102 | 2.59 |
| 11 | 0.091 | 2.31 |
| 12 | 0.081 | 2.05 |
| 14 | 0.064 | 1.63 |
| 16 | 0.051 | 1.29 |
| 18 | 0.040 | 1.02 |
| 20 | 0.032 | 0.81 |
| 22 | 0.025 | 0.64 |
| 24 | 0.020 | 0.51 |
| 26 | 0.016 | 0.41 |
| 28 | 0.013 | 0.32 |
| 30 | 0.010 | 0.26 |
Understanding Aluminum Gauge Thickness
Gauge is a standard unit for measuring the thickness of aluminum sheets. Lower gauge numbers indicate thicker materials, while higher gauge numbers represent thinner sheets.
Gauges vary from material to material (i.e. 12 GA Aluminum is not the same as 12 GA Stainless Steel).
Common Aluminum Gauge Applications
12 Gauge Aluminum is 2.053 mm (0.08081 in) thick. It's used for heavy-duty applications, structures, and frames.
14 Gauge Aluminum is 1.628 mm (0.06408 in) thick. It's used for medium-duty applications, enclosures, housings.
16 Gauge Aluminum is 1.291 mm (0.05082 in) thick. It's used for light-duty applications, cabinets, covers.
Need Custom Aluminum Parts?
RMFG specializes in custom sheet metal fabrication with precision cutting, bending, and finishing.
Get an instant quoteFrom our customers.
Read reviews on Google“Their parts almost always ship ahead of schedule, and their customer service is excellent.”
“RMFG always does a great job with our parts. Quick lead times and lots of options, couldn't recommend them enough!”
“Always fast, perfect, inexpensive parts. Never had a problem with RMFG and love doing business with them.”
“RMFG is my go-to whenever I'm prototyping anything with sheet metal.”
“The price was very reasonable, the quality was excellent, and the lead time was good.”
“Have ordered from them half a dozen times and the experience is always great. Transparent pricing, incredibly responsive, and always on-time delivery”
“When I need sheet metal parts FAST, the go to default for me now is RMFG!”
“Kenneth and the whole team are stellar at what they do. Amazing quality parts”
“RMFG does a great job every time”
“Great interface and experience, easily my default option now.”
“It's unbelievable to order & get the parts in hand on the same week!”
“RMFG has insane customer service every-time. If a part is critical, use them.”
