Table
EMT Inside/Outside Dimensions
EMT Inside/Outside Dimensions lookup table with assumptions and boundary notes.
Scope
Dimensional planning only. It does not provide conduit fill, support spacing, bend limits, or product approval.
Lookup table
Lookup common EMT trade-size labels, metric designators, and rounded dimensional planning values.
Scroll sideways to keep row labels aligned with hidden columns.
| 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 lookup only; product data governs exact dimensions |
| 3/4 in | 21 | 20.9 | 23.4 | 343 | EMT dimensional lookup only; product data governs exact dimensions |
| 1 in | 27 | 26.6 | 29.5 | 556 | EMT dimensional lookup only; product data governs exact dimensions |
| 1-1/4 in | 35 | 35.1 | 38.4 | 968 | EMT dimensional lookup only; product data governs exact dimensions |
| 1-1/2 in | 41 | 40.9 | 44.2 | 1314 | EMT dimensional lookup only; product data governs exact dimensions |
| 2 in | 53 | 52.5 | 55.8 | 2165 | EMT dimensional lookup only; product data governs exact dimensions |
| 2-1/2 in | 63 | 69.4 | 73 | 3783 | EMT dimensional lookup only; product data governs exact dimensions |
| 3 in | 78 | 85.2 | 88.9 | 5701 | EMT dimensional lookup only; product data governs exact dimensions |
| 4 in | 103 | 110.9 | 114.3 | 9659 | EMT dimensional lookup only; product data governs exact dimensions |
Notes
- Check table values for preliminary lookup and arithmetic checks only.
- Confirm equipment ratings, product markings, installation conditions, utility requirements, and the local authority requirements before design or field use.