Table
EMT Inside/Outside Dimensions
EMT Inside/Outside Dimensions reference with assumptions and boundary notes.
Reference boundary
Dimensional reference only. It does not provide conduit fill, support spacing, bend limits, or product approval.
Reference table
Reference common EMT trade-size labels, metric designators, and rounded dimensional planning values.
| Trade size | Metric designator | Nominal ID (mm) | Nominal OD (mm) | Area from nominal ID (mm2) | Boundary |
|---|---|---|---|---|---|
| 1/2 in | 16 | 15.8 | 17.9 | 196 | EMT dimensional reference only; product data governs exact dimensions |
| 3/4 in | 21 | 20.9 | 23.4 | 343 | EMT dimensional reference only; product data governs exact dimensions |
| 1 in | 27 | 26.6 | 29.5 | 556 | EMT dimensional reference only; product data governs exact dimensions |
| 1-1/4 in | 35 | 35.1 | 38.4 | 968 | EMT dimensional reference only; product data governs exact dimensions |
| 1-1/2 in | 41 | 40.9 | 44.2 | 1314 | EMT dimensional reference only; product data governs exact dimensions |
| 2 in | 53 | 52.5 | 55.8 | 2165 | EMT dimensional reference only; product data governs exact dimensions |
| 2-1/2 in | 63 | 69.4 | 73 | 3783 | EMT dimensional reference only; product data governs exact dimensions |
| 3 in | 78 | 85.2 | 88.9 | 5701 | EMT dimensional reference only; product data governs exact dimensions |
| 4 in | 103 | 110.9 | 114.3 | 9659 | EMT dimensional reference only; product data governs exact dimensions |
Use notes
- Use this table for preliminary reference and arithmetic checks only.
- Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.