How To Compare Liner Units - MIL vs Gauge

Written by:  Danny Rhodehamel

Manufacturers commonly describe the thickness of their liners in MILs or Gauges. Some use the terms interchangeably like they are the same. They aren't. MIL designated liners are 6-12% thicker than a Gauge designated liner for the same number. For example, a 25 MIL liner is about 12% thicker than a 25 Gauge liner. This guide shows the differencs to give you a better understanding of what thickness liner you are buying.

Tips & Warnings

Step by Step

Step 1

20 units - A 20 Gauge liner is 0.0185 inches thick. A 20 MIL liner is 0.0205 inches thick or approximately 11% thicker than a 20 Gauge liner.

Step 2

25 units - A 25 Gauge liner is 0.0223 inches thick. A 25 MIL liner is 0.0250 inches thick or approximately 12% thicker than a 20 Gauge liner. By comparison a dime is 0.0490 inches thick or just under twice the thickness of a 25 MIL liner.

Step 3

30 units - A 30 Gauge liner is 0.0260 inches thick. A 30 MIL liner is 0.0275 inches thick or approximately 6% thicker than a 30 Gauge liner.

Comments (1 to 7 of 7)

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User: Inyopools

mcphunter - 25ga is thicker than 20ga.

User: mcphunter

which is thicker 20ga or 25ga???

User: Inyopools

debs - The thickest, beaded, pool liner that you sell is 27 MILs.

User: debs

So what exactly is the thickest, beaded, pool liner that you sell?

User: Inyopools

suezew - I have only seen this comparison for the common liner thicknesses. You could estimate that any MIL liner thickness is approximately 10% thicker than a comparable gauge thickness. Be aware that this comparison is for liners only. It will be different for other materials like steel.

User: suezew

Is there a chart listing this information starting with 1 guage/mill?


so what is 12 gauge v.s. 8 mil?


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