Nominal NPT Pipe Size To Nominal Metric Size Conversion Chart
NOMINAL METRIC SIZE CONVERSION CHART |
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NOMINAL PIPE SIZE (INCHES/U.S.) |
NOMINAL PIPE SIZE (METRIC) |
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1/8" | 6 mm | |
3/16" | 7 mm | |
1/4" | 8 mm | |
3/8" | 10 mm | |
1/2" | 15 mm | |
5/8" | 18 mm | |
3/4" | 20 mm | |
1" | 25 mm | |
1-1/4" | 32 mm | |
1-1/2" | 40 mm | |
2" | 50 mm | |
2-1/2" | 65 mm | |
3" | 80 mm | |
3-1/2" | 90 mm | |
4" | 100 mm | |
4-1/2" | 115 mm | |
5" | 125 mm | |
6" | 150 mm |