Because you aren’t dealing with different ratchet drive sizes, wrench sizes are a little easier to figure out than socket sizes. While the normal fixed wrench set or ratcheting wrench set won’t contain every size of a wrench, you’ll probably only need a few of them in general.
A car mechanic will need a wide variety of wrench sizes, whereas someone working on bicycles or farming equipment may only use a few.
There are Standard (SAE) and Metric wrench sizes, and you can find all wrench sizes in order that can range from the smallest to the largest and come as part of a set for activities like these.
When working with SAE and metric nuts and bolts, you can mix and match socket sets, or you need an SAE to metric size wrench conversion chart for the mm to SAE equivalent for all the sockets you need. (Read Spark Plug Wrench Sizes)
In our guide, you can find a common wrench size chart that can be used for your combination wrench sizes chart as these can tell you box end wrench sizes and the standard wrench sizes in order.
What Are The Wrench Sizes In Order?
Standard American wrench sizes, from the largest to smallest and measured in inches, are 5/8, 19/32, 9/16, 1/2, 7/16, 3/8, 11/32, 5/16, 9/32, 1/4, 7/32, 3/16, 5/32, and 1/8. Wrenches are available in a set or individually. (Read Socket Sizes In Order)
Here you can find the standard wrench size chart in order.
Bolt Diameter | Metric | Standard |
1/8" | 8mm | 5/16" |
3/16" | 10mm | 3/8" |
1/4" | 11mm | 7/16" |
5/16" | 13mm | 1/2" |
3/8" | 14mm | 9/16" |
7/16" | 16mm | 5/8" |
1/2" | 19mm | 3/4" |
9/16" | 21mm | 13/16" |
22mm | 7/8" | |
5/8" | 24mm | 15/16" |
25mm | 1" | |
3/4" | 29mm | 1-1/8" |
32mm | 1-1/4" | |
7/8" | 34mm | 1-5/16" |
35mm | 1-3/8" | |
1" | 38 mm | 1-1/2" |
41mm | 1-5/8" | |
1-1/8" | 43mm | 1-11/16" |
45mm | 1-3/4" | |
1-1/4" | 48mm | 1-7/8" |
1-3/8" | 51mm | 2" |
1-1/2" | 57mm | 2-1/4" |
1-5/8" | 64mm | 2-1/2" |
1-3/4" | 67mm | 2-5/8" |
70mm | 2-3/4" | |
1-7/8" | 75mm | 2-15/16" |
76mm | 3" | |
2" | 80mm | 3-1/8" |
83mm | 3-1/4" | |
2-1/4" | 89mm | 3-1/2" |
95mm | 3-3/4" | |
2-1/2" | 99mm | 3-7/8" |
102mm | 4" | |
2-3/4" | 108mm | 4-1/4" |
114mm | 4-1/2" | |
3" | 118mm | 4-5/8" |
3-1/4" | 127mm | 5" |
3-1/2" | 137mm | 5-3/8" |
140mm | 5-1/2" | |
3-3/4" | 146mm | 5-3/4" |
152mm | 6" | |
165mm | 6-1/2" | |
178mm | 7" |
What Size Wrench Is Bigger Than 3/4?
Here is more information on the standard size of wrenches in your toolbox. The wrench set sizes chart here has both inches and mm and can be used as an open-ended wrench size chart and your box-end wrench size chart together. (Read Light Bulbs Types)
Bolt Diameter | Standard Wrench Size | Metric Wrench Size |
1/8" | 5/16" | 8mm |
3/16" | 3/8" | 10mm |
1/4" | 7/16" | 11mm |
5/16" | 1/2" | 13mm |
3/8" | 9/16" | 15mm |
7/16" | 5/8" | 16mm |
1/2" | 3/4" | 19mm |
9/16" | 13/16" | 21mm |
5/8" | 15/16" | 24mm |
3/4" | 1-1/8" | 29mm |
7/8" | 1-5/16" | 34mm |
1" | 1-1/2" | 38mm |
1-1/8" | 1-11/16" | 43mm |
1-1/4" | 1-7/8" | 48mm |
1-3/8" | 2-1/16" | 53mm |
1-1/2" | 2-1/4" | 58mm |
1-5/8" | 2-7/16" | 62mm |
1-3/4" | 2-5/8" | 67mm |
1-7/8" | 2-13/16" | 72mm |
2" | 3" | 77mm |
2-1/4" | 3-3/8" | 86mm |
2-1/2" | 3-3/4" | 96mm |
2-3/4" | 4-1/8" | 105mm |
3" | 4-1/2" | 115mm |
What Are All The Socket Sizes?
In the following wrench conversion chart, you can find sockets sizes in order for SAE socket sizes, tools, and bolts. (Read Star Bit Sizes Chart)
SAE Socket Sizes Chart | ||||
1/4” Drive | 3/8” Drive | 1/2” Drive | 3/4” Drives | 1” Drives |
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” |
When you need to use metric sockets, the metric sizes might not relate to the imperial sizes. You can use this wrench conversion chart for metric sockets, wrenches, tools, and when you need to convert between inches and mm. (Read Allen Wrench Set Sizes)
SAE to Metric Conversion Chart | ||
SAE Sizes | Metric Sizes | Similar Socket Sizes |
5/32” | 4mm | 5/32” and 4mm are almost the same |
4.5mm | ||
3/16” | ||
5mm | ||
5.5mm | ||
7/32” | ||
6mm | ||
1/4” | ||
6.5mm | ||
7mm | ||
9/32” | ||
5/16” | 5/16” and 8mm are almost the same | |
8mm | ||
11/32” | ||
9mm | ||
3/8” | ||
10mm | ||
13/32” | ||
11mm | 7/16” and 11mm are almost the same | |
7/16” | ||
15/32” | 15/32” and 12mm are almost the same | |
12mm | ||
1/2” | ||
13mm | ||
17/32” | ||
14mm | ||
9/16” | ||
15mm | 19/32” and 15mm are almost the same | |
19/32” | ||
5/8” | ||
16mm | ||
21/32” | ||
17mm | ||
11/16” | ||
18mm | ||
23/32” | 19mm | 3/4” and 19mm are almost the same |
3/4” | ||
25/32” | ||
20mm | ||
13/16” | ||
21mm | ||
27/32” | ||
22mm | ||
7/8” | ||
23mm | 29/32” and 23mm are almost the same | |
29/32” | ||
15/16” | ||
24mm |
How do you tell what size a wrench is?
Spanner. The width across flats indicates the nominal "size" of the spanner. It is imprinted on the spanners in millimeter (mm) values. Older British and current US spanners (wrenches) have inch sizes that are imprinted in intermediate sizes in fractions.
Wrench Sizes In Order
Standard sizing in America are as follows: 5/8, 19/32, 9/16, 1/2, 7/16, 3/8, 11/32, 5/16, 9/32, 1/4, 7/32, 3/16, 5/32, and 1/8. These are set out from the smallest wrench to the largest, and you will be able to buy these wrenches individually or in wretch sets.
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