SOCKET SIZE CHART FOR METRIC AND STANDARD

Sockets come in many sizes and can get confusing with what is bigger than the other. In this post, you will find a socket size chart for both metric and standard (SAE), in their respective order of size. The three most common drive size types are 1/4″, 3/8″, and 1/2″. You can learn more about drive types here. Each drive type will carry from and up to a certain size socket until another drive type is needed.

Socket Size Chart For Metric

1/4″ Drive	3/8″ Drive	1/2″ Drive	3/4″ Drive	1″ Drive
4mm	5.5mm	8mm	19mm	36mm
4.5mm	6mm	9mm	20mm	38mm
5mm	7mm	10mm	21mm	41mm
5.5mm	8mm	11mm	22mm	46mm
6mm	9mm	12mm	23mm	50mm
7mm	10mm	13mm	24mm	54mm
8mm	11mm	14mm	25mm	55mm
9mm	12mm	15mm	26mm	58mm
10mm	13mm	16mm	27mm	60mm
11mm	14mm	17mm	28mm	63mm
12mm	15mm	18mm	29mm	65mm
13mm	16mm	19mm	30mm	67mm
14mm	17mm	20mm	31mm	70mm
15mm	18mm	21mm	32mm	71mm
	19mm	22mm	33mm	75mm
	20mm	23mm	34mm	77mm
	21mm	24mm	35mm	80mm
	22mm	25mm	36mm
		26mm	38mm
		27mm	40mm
		28mm	41mm
		30mm	42mm

Metric socket sizes in order

Socket Size Chart For Standard

1/4″ Drive	3/8″ Drive	1/2″ Drive	3/4″ Drive	1″ Drive
5/32″	1/4″	3/8″	7/8″	1-5/8″
3/16″	5/16″	7/16″	15/16″	1-11/16″
7/32″	3/8″	1/2″	1″	1-3/4″
1/4″	7/16″	9/16″	1-1/16″	1-13/16″
9/32″	1/2″	19/32″	1-1/8″	1-7/8″
5/16″	9/16″	5/8″	1-3/16″	2″
11/32″	5/8″	21/32″	1-1/4″	2-1/8″
3/8″	11/16″	11/16″	1-5/16″	2-3/16″
7/16″	3/4″	3/4″	1-3/8″	2-1/4″
1/2″	13/16″	25/32″	1-7/16″	2-3/8″
9/16″	7/8″	13/16″	1-1/2″	2-1/2″
	15/16″	7/8″	1-5/8″	2-5/8″
	1″	15/16″	1-11/16″	2-3/4″
		1″	1-3/4″	2-15/16″
		1-1/16″	1-13/16″	3″
		1-1/8″	1-7/8″	3-1/8″
		1-3/16″	2″
		1-1/4″	2-1/8″
		1-1/2″	2-3/16″
			2-1/4″