Winland Converter: Inch to cm and mm
Convert inch to cm, please enter a number, for example 1.125
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Imperial and Metric units are the most popular unit to indicate dimensions of copper pipe and copper fittings in the world. However, due to different culture, many people may only familiar with the unit system their country use, Winland Metal's converter aims to provide a easy way to make the unit systems communicate with each other.
Copper piping products have two major measurement systems, which are metric and imperial. This is quite confused for people from different culture. Below is a comparison table of common copper tubing specifications.
Please kindly note the datas are for acutal size, in some cases the nominal size and the actual size will be different. For example, nominal size of copper tube for plumbing application will has a 1/8" difference with actual size.
| Imperial | Metric |
|---|---|
| 1/8" | 3.18mm |
| 3/16" | 4.75mm |
| 1/4" | 6.35mm |
| 5/16" | 7.92mm |
| 3/8" | 9.52mm |
| 1/2" | 12.7mm |
| 5/8" | 15.9mm |
| 3/4" | 19.1mm |
| 7/8" | 22.3mm |
| 1" | 25.4mm |
| 1-1/4" | 34.9mm |
| 1-1/2" | 41.3mm |
| 1-1/8" | 28.6mm |
| 1-3/8" | 1.375mm |
| 1-5/8" | 41.3mm |
| 2" | 50.8mm |
| 2-1/2" | 63.5mm |
| 3" | 76.2mm |
| 3-1/2" | 88.9mm |
| 4" | 101.6mm |
| 5" | 127mm |
| 6" | 152.4mm |
| 8" | 203mm |