Conversion table inches to mm

To analyse data generated in the laboratory in order to determine its significance, you must first evaluate your data from a statistical perspective. Dimensions system, specifically measuring length, varies between the English and metric systems. An inch (symbol: in) is a unit of length in the imperial (UK) and US customary systems of measurement. The inch is mostly used in the United States, Canada, and the United Kingdom. The following table shows conversions of length to metric / inches.

How to Convert Inch to Millimeter:

Dimensions — Inches to Metric			Dimensions —Metric to Inches
Decimal Inches	Fractional Inches	Metric	Metric	Decimal Inches
0.031”	1/32”	0.79 mm	1.0 mm	0.039”
0.062”	1/16”	1.57 mm	1.8 mm	0.071”
0.125”	1/8”	3.18 mm	2.0 mm	0.079”
0.188”	3/16”	4.78 mm	3.0 mm	0.118”
0.250”	1/4”	6.35 mm	3.2 mm	0.126”
0.313”	5/16”	7.95 mm	4.0 mm	0.157”
0.375”	3/8”	9.53 mm	4.3 mm	0.169”
0.438”	7/16”	11.13 mm	4.6 mm	0.181”
0.500”	1/2”	12.70 mm	5.0 mm	0.197”
0.563”	9/16”	14.30 mm	6.0 mm	0.236”
0.625”	5/8”	15.88 mm	7.0 mm	0.276”
0.688”	11/16”	17.48 mm	8.0 mm	0.315”
0.750”	3/4”	19.05 mm	9.0 mm	0.354”
0.813”	13/16”	20.65 mm	1.0 cm	0.394”
0.875”	7/8”	22.23 mm	2.0 cm	0.787”
0.938”	15/16”	23.83 mm	3.0 cm	1.181”
1”	1”	2.54 cm	4.0 cm	1.575”
2”	2”	5.08 cm	5.0 cm	1.969”
3”	3”	7.62 cm	6.0 cm	2.362”
4”	4”	10.16 cm	7.0 cm	2.756”
5”	5”	12.70 cm	8.0 cm	3.150”
6”	6”	15.24 cm	9.0 cm	3.543”
7”	7”	17.78 cm	10.0 cm	3.937”
10”	10”	25.40 cm

Conversion Factors Formula

Inches to millimeters Inches x 25.4 mm/in

Inches to centimeters Inches x 2.54 cm/in

Inches to microns Inches x 25.4 mm/in. x 1,000 μm/mm

Example: Syringe Filter Selection on Diameter (mm converted to inches)

Syringe filter selection is based on the filtration volume and size. With a variety of syringe filters available, understanding the role of diameter, pore size, and membrane will aid in proper selection. Sample volume will determine the choice of diameter, ensuring that the filter is not overloaded. The following in table aids in selecting syringe filters by diameter:

For small volumes (< 1 ml) syringe filters with a diameter of 3 mm or 0.118”

For medium volumes (1-10 ml) 15 mm or 0.590”

for large volumes (> 10 ml) 25 mm or 0,984” are chosen