How Many? A Dictionary of Units of Measurement
© Russ Rowlett and the University of North Carolina at Chapel Hill

Table of Contents
About the Dictionary
Using the Dictionary

Sheet Metal Thickness Gauges

Steel data from Caloritech, for heavier gauges also from Engineer's Edge. Aluminum data from Festiva Tech.

Gauge (ga)

Standard Steel Thickness (inches)

Galvanized Steel Thickness (inches)

Aluminum Thickness (inches)

3

0.2391

0.2294

4

0.2242

0.2043

5

0.2092

0.1819

6

0.1943

0.1620

7

0.1793

0.1443

8

0.1644

0.1285

9

0.1495

0.1532

0.1144

10

0.1345

0.1382

0.1019

11

0.1196

0.1233

0.0907

12

0.1046

0.1084

0.0808

13

0.0897

0.0934

0.0720

14

0.0747

0.0785

0.0641

15

0.0673

0.0710

0.0571

16

0.0598

0.0635

0.0508

17

0.0538

0.0575

0.0453

18

0.0478

0.0516

0.0403

19

0.0418

0.0456

0.0359

20

0.0359

0.0396

0.0320

21

0.0329

0.0366

0.0285

22

0.0299

0.0336

0.0253

23

0.0269

0.0306

0.0226

24

0.0239

0.0276

0.0201

25

0.0209

0.0247

0.0179

26

0.0179

0.0217

0.0159

27

0.0164

0.0202

0.0142

28

0.0149

0.0187

0.0126

29

0.0135

0.0172

0.0113

30

0.0120

0.0157

0.0100

31

0.0105

0.0142

0.0089

32

0.0097

0.0134

0.0080

33

0.0090

0.0071

34

0.0082

0.0063

35

0.0075

0.0056

36

0.0067

 

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You are welcome to email the author (rowlett@email.unc.edu) with comments and suggestions.

All material in this folder is copyright © 2002 by Russ Rowlett and the University of North Carolina at Chapel Hill. Permission is granted for personal use and for use by individual teachers in conducting their own classes. All other rights reserved. You are welcome to make links to this page, but please do not copy the contents of any page in this folder to another site. The material at this site will be updated from time to time.

Revised and expanded July 26, 2002.