Socket Size Chart

Published: 15 May 2026

Metric (mm)Imperial (inches)Drive Size
2mm5/64″1/4″
2.5mm3/32″1/4″
3mm1/8″1/4″
3.5mm9/64″1/4″
4mm5/32″1/4″
4.5mm11/64″1/4″
5mm3/16″1/4″
5.5mm7/32″1/4″
6mm1/4″1/4″
7mm9/32″1/4″ / 3/8″
8mm5/16″1/4″ / 3/8″
9mm11/32″3/8″
10mm3/8″3/8″
11mm7/16″3/8″
12mm15/32″3/8″
13mm1/2″3/8″ / 1/2″
14mm9/16″3/8″ / 1/2″
15mm19/32″3/8″ / 1/2″
16mm5/8″1/2″
17mm11/16″1/2″
18mm23/32″1/2″
19mm3/4″1/2″
20mm25/32″1/2″
21mm13/16″1/2″
22mm7/8″1/2″
23mm29/32″1/2″
24mm15/16″1/2″
25mm1″1/2″
26mm1-1/32″1/2″
27mm1-1/16″1/2″ / 3/4″
28mm1-3/32″1/2″ / 3/4″
29mm1-1/8″1/2″ / 3/4″
30mm1-3/16″1/2″ / 3/4″
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Asif Ali

Hi, I’m Asif Ali. I have a bachelor’s degree in Mechanical Engineering. Through Mechanical Guide Hub, I aim to simplify complex mechanical concepts and present them in a clear and engaging way. This platform is built to make learning mechanical topics easy, enjoyable, and accessible for everyone.

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