Pipe Inch to Meter Conversion
- DN = Diametre Nominel - Diameter Nominal (metric)
- Conform to International Standards Organization (ISO)
- NPS = Nominal Pipe Size (inches)
- 12" and below, the outside diameter (OD) was origionally set by the inside diameter (ID).
- 14" and above, the outside diameter (OD) values are equal.
Pipe Inch to Meter Conversion | |||
|---|---|---|---|
| Pipe Size DN (mm) | Pipe Size NPS (in) |
Pipe Size DN (mm) OD | Pipe Size NPS (in) OD |
| 6 | 1/8 | 10.29 | 0.405 |
| 8 | 1/4 | 13.72 | 0.540 |
| 10 | 3/8 | 17.15 | 0.675 |
| 15 | 1/2 | 21.34 | 0.840 |
| 20 | 3/4 | 26.67 | 1.050 |
| 25 | 1 | 33.40 | 1.315 |
| 32 | 1 1/4 | 42.16 | 1.660 |
| 40 | 1 1/2 | 48.26 | 1.900 |
| 50 | 2 | 60.33 | 2.375 |
| 65 | 2 1/2 | 73.02 | 2.875 |
| 80 | 3 | 88.90 | 3.500 |
| 90 | 3 1/2 | 101.60 | 4.000 |
| 100 | 4 | 114.30 | 4.500 |
| 125 | 5 | 141.30 | 5.563 |
| 150 | 6 | 168.27 | 6.625 |
| 200 | 8 | 219.08 | 8.625 |
| 250 | 10 | 273.05 | 10.750 |
| 300 | 12 | 323.85 | 12.750 |
| 350 | 14 | 355.60 | 14.0 |
| 400 | 16 | 406.40 | 16.0 |
| 450 | 18 | 457.20 | 18.0 |
| 500 | 20 | 508.00 | 20.0 |
| 550 | 22 | 558.80 | 22.0 |
| 600 | 24 | 609.60 | 24.0 |
| 650 | 26 | 660.40 | 26.0 |
| 700 | 28 | 711.20 | 28.0 |
| 750 | 30 | 762.00 | 30.0 |
| 800 | 32 | 812.80 | 32.0 |
| 850 | 34 | 863.60 | 34.0 |
| 900 | 36 | 914.40 | 36.0 |
| 1000 | 40 | 1016.00 | 40.0 |
| 1050 | 42 | 1066.80 | 42.0 |
| 1100 | 44 | 1117.60 | 44.0 |
| 1150 | 46 | 1168.40 | 46.0 |
| 1200 | 48 | 1219.20 | 48.0 |
| 1300 | 52 | 1320.80 | 52.0 |
| 1400 | 54 | 1371.60 | 54.0 |
| 1500 | 60 | 1524.00 | 60.0 |
| 1600 | 64 | 1625.60 | 64.0 |
| 1800 | 72 | 1828.80 | 72.0 |
| 1900 | 76 | 1930.40 | 76.0 |
| 2000 | 80 | 2032.00 | 80.0 |
| 2200 | 88 | 2235.20 | 88.0 |
| 2300 | 92 | 2336.80 | 92.0 |
