Construction Monkey

Conduit Table

Great Companies Depend on Consistent and Superior Processes

Conduit Type:
Select Units of Measure:
Conduit Property Table
Trade Size Interior Diameter Exterior Diameter Interior Area Exterior Area Interior Volume per Exterior Volume per
1/2" 0.62 in 0.71 in 0.30 in2 0.39 in2 36.46 in3 46.98 in3
3/4" 0.82 in 0.92 in 0.53 in2 0.67 in2 63.99 in3 80.12 in3
1" 1.04 in 1.16 in 0.85 in2 1.06 in2 101.94 in3 127.48 in3
1 1/4" 1.38 in 1.51 in 1.50 in2 1.79 in2 179.49 in3 214.89 in3
1 1/2" 1.61 in 1.74 in 2.04 in2 2.38 in2 244.30 in3 285.34 in3
2" 2.07 in 2.20 in 3.36 in2 3.79 in2 402.67 in3 454.92 in3
2 1/2" 2.73 in 2.88 in 5.86 in2 6.49 in2 702.93 in3 779.02 in3
3" 3.36 in 3.50 in 8.85 in2 9.62 in2 1,061.49 in3 1,154.54 in3
3 1/2" 3.83 in 4.00 in 11.55 in2 12.57 in2 1,385.40 in3 1,507.96 in3
4" 4.33 in 4.50 in 14.75 in2 15.90 in2 1,770.31 in3 1,908.52 in3


Maximum Number of Wires in Conduit
THHN Size 1/2" 3/4" 1" 1 1/4" 1 1/2" 2" 2 1/2" 3" 3 1/2" 4"
#14 12 22 35 61 84 138 242 365 477 609
#12 9 16 25 45 61 101 176 266 347 444
#10 5 10 16 28 38 63 110 167 218 279
#8 3 5 9 16 22 36 63 96 126 161
#6 1 4 6 11 16 26 46 69 91 116
#4 1 2 4 7 9 16 28 42 56 71
#3 1 1 3 6 8 13 24 36 47 60
#2 1 1 2 5 7 11 20 30 39 50
#1 1 1 1 3 5 8 14 22 29 37
#1/0 0 1 1 3 4 7 12 19 24 31
#2/0 0 1 1 2 3 6 10 15 20 26
#3/0 0 1 1 1 3 5 8 13 17 22
#4/0 0 0 1 1 1 4 7 10 14 18
#250 0 0 1 1 1 3 5 8 11 14
#300 0 0 0 1 1 2 5 7 10 12
#350 0 0 0 1 1 1 4 6 8 11
#400 0 0 0 1 1 1 3 6 7 10
#500 0 0 0 1 1 1 3 5 6 8
#600 0 0 0 0 1 1 2 4 5 6
#700 0 0 0 0 1 1 1 3 4 5
#750 0 0 0 0 1 1 1 3 4 5
#800 0 0 0 0 0 1 1 3 4 5
#900 0 0 0 0 0 1 1 2 3 4
#1000 0 0 0 0 0 1 1 2 3 4

Great Companies Depend on Consistent and Superior Processes

Companies need to have consistent, great processes. Contractors have unique challenges compared to other businesses due to their workforce being spread across multiple jobsites, making consistency difficult to achieve. Unlike other software for contractors, Construction Monkey is built as a superior process that is field focused. What does field focused mean? Our software is designed to make it easy for the field to use and more than just collecting or reporting data, it is built around a superior field management process!

No guarantees are made as to the accuracy of the calculation or compliance with local codes.  Verify all calculations with a professional engineer. If you find an error, or have a suggestion, please send us an email.

None