What are the wrench sizes in order?

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Here are the Wrench Sizes in Order in Standard (SAE) and Metric inch:

Standard Combination Wrenches: 1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1,

Metric Combination Wrenches: 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 36, 64,

Standard Flare Nut Wrenches: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 7/8,

Metric Flare Nut Wrenches: 9, 10, 11, 12, 13, 14, 15, 17,

Note: Each wrench may combine two sizes.

Knowing the Wrench Sizes is Helpful For you

As a mechanic, knowing the size of the wrench that you need can be vital for completing a job, and having a wrench with the right size can help you finish the job with ease. This can pose as a solution and not cause frustration.

Knowing the best bolt size, best socket size, and best wrench size for your projects will bring you great success!

You don’t need to know all the wrench sizes and their detailed use, but as a DIYer or professional, you need to know the most common wrench sizes available to you because they have the best practical use in the field and will help you by miles.

This can also help you if you are planning to buy a wrench set sometime soon.

The best way to buy a wrench set is to think first before you place your order. You can start by knowing the most common sizes.

There are different types of wrenches such as open-end, combination, and flare nut wrenches.

You can find the most common wrench sizes that you will use in any workshop or construction site.

How can a correct wrench size help me?

Imagine that you were a mechanic and you need to easily remove a bolt of size 11 mm. Now, if you go to your favorite shop and see that you have 10 different sized wrenches in your toolbox, then it would be a challenge for you to find out the correct one.

In this situation, knowing the sizes will save you a huge amount of time!

Thus, knowing the limitation of accepting diameter or thread is needed for more work efficiency and better speed and success.

Can these wrench sizes be written down?

If you are a professional Plumber or Contractor that is certified, you may already have the wrench sizes memorized in your head and in your heart.

If you are a DIYer, then having a printed or digital wrench size chart guide can definitely help you on the go!


Wrench Size Conversion Chart (SAE to Metric)

The comparison list below is printable for an always ever ready approach to your amazing projects!

SAE SizeMetric SizeInches DecimalNote
5/32"0.1565/32" and 4mm are close enough
4mm0.1575/32" and 4mm are close enough
4.5mm0.177
3/16"0.188
5mm0.197
5.5mm0.216
7/32"0.219
6mm0.236
1/4"0.250
6.5mm0.256
7mm0.276
9/32"0.281
5/16"0.313 5/16" and 8mm are close enough
8mm0.315 5/16" and 8mm are close enough
11/32"0.344
9mm0.354
3/8"0.375
10mm0.394
13/32"0.406
11mm0.4337/16" and 11mm are close enough
7/16"0.4387/16" and 11mm are close enough
15/32"0.46915/32" and 12mm are close enough
12mm0.47215/32" and 12mm are close enough
7/16"0.438
15/32"0.46915/32" and 12mm are close enough
12mm0.472
1/2"0.500
13mm0.512
17/32"0.531
14mm0.551
9/16"0.563
15mm0.59119/32" and 15mm are close enough
19/32"0.594
5/8"0.6255/8" and 16mm are close enough
16mm0.630
21/32"0.656
17mm0.669
11/16"0.688
18mm0.709
23/32"0.719
19mm0.7483/4" and 19mm are close enough
3/4"0.7503/4" and 19mm are close enough
25/32"0.781
20mm0.787
13/16"0.813
21mm0.827
27/32"0.844
22mm0.866
7/8"0.875
23mm0.90629/32" and 23mm are close enough
29/32"0.90629/32" and 23mm are close enough
15/16"0.938
24mm0.945
25mm0.984
1"1.000
26mm1.024
1-1/16"1.063 1-1/16" and 27mm are close enough
27mm1.0631-1/16" and 27mm are close enough
28mm1.102
1-1/8"1.125
29mm1.142
30mm1.181
1-3/16"1.188
31mm1.221
1-1/4"1.2501-1/4" and 32mm are close enough
32mm1.2561-1/4" and 32mm are close enough
33mm1.299
1-5/16" 1.313
34mm1.339
1-3/8"1.3751-3/8" and 35mm are close enough
35mm1.3781-3/8" and 35mm are close enough
1-7/16"1.438
37mm1.457
38mm1.4961-1/2" and 38mm are close enough
1-1/2"1.5001-1/2" and 38mm are close enough
39mm1.535
40mm1.575
41mm1.614
1-5/8"1.625
42mm1.654
1-11/16"1.6881-11/16" and 43mm are close enough
43mm1.6931-11/16" and 43mm are close enough
44mm1.733
1-3/4"1.750
45mm1.772
46mm1.811
1-13/16"1.813
47mm1.850
1-7/8"1.875
48mm1.890
49mm 49mm
50mm1.969
2"2.0002" and 51mm are close enough
51mm2.0082" and 51mm are close enough
52mm2.047
2-1/16"2.063
53mm2.087
2-1/8"2.1252-1/8" and 54mm are close enough
54mm2.1262-1/8" and 54mm are close enough
55mm2.165
2-3/16"2.188
56mm2.205
57mm2.2442-1/4" and 57mm are close enough
2-1/4"2.2502-1/4" and 57mm are close enough
58mm2.283
59mm2.323
60mm2.362
2-3/8"2.375
61mm2.402
62mm2.441
63mm2.480
2-1/2"2.500

Wrench Size Chart for Bolts

This bolt size chart is also printable to help you in a tight spot!

Bolt DiameterWrench Size (SAE)Wrench Size Metric
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

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