EMT Conduit Sizes Chart

EMT Conduit Sizes Table

Size (inches)	EMT Decimal	EMT Fraction	IMC Decimal	IMC Fraction	Rigid Decimal	Rigid Fraction
1/2	0.706	11/16	0.815	13/16	0.84	13/16
3/4	0.922	15/16	1.029	1	1.05	1-1/16
1	1.163	1-3/16	1.29	1-5/16	1.315	1-5/16
1-1/4	1.51	1-1/2	1.638	1-5/8	1.66	1-11/16
1-1/2	1.74	1-3/4	1.883	1-7/8	1.9	1-7/8
2	2.197	2-3/16	2.36	2-3/8	2.375	2-3/8
2-1/2	2.875	2-7/8	2.857	2-7/8	2.875	2-7/8
3	3.5	3-1/2	3.476	3-1/2	3.5	3-1/2
3-1/2	4	4	3.971	4	4	4
4	4.5	4-1/2	4.466	4-7/16	4.5	4-1/2
5					5.563	5-9/16

All measurements in the table above are measured in inches. The table above provides the outside diameter of each conduit size in both a decimal and fraction measurement.